some deletions
[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools / gopls@v0.5.2 / internal / regtest / diagnostics_test.go
diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools/gopls@v0.5.2/internal/regtest/diagnostics_test.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools/gopls@v0.5.2/internal/regtest/diagnostics_test.go
deleted file mode 100644 (file)
index 18f19c0..0000000
+++ /dev/null
@@ -1,1454 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package regtest
-
-import (
-       "context"
-       "fmt"
-       "log"
-       "os"
-       "testing"
-       "time"
-
-       "golang.org/x/tools/internal/lsp"
-       "golang.org/x/tools/internal/lsp/fake"
-       "golang.org/x/tools/internal/lsp/protocol"
-       "golang.org/x/tools/internal/lsp/tests"
-       "golang.org/x/tools/internal/testenv"
-)
-
-// Use mod.com for all go.mod files due to golang/go#35230.
-const exampleProgram = `
--- go.mod --
-module mod.com
-
-go 1.12
--- main.go --
-package main
-
-import "fmt"
-
-func main() {
-       fmt.Println("Hello World.")
-}`
-
-func TestDiagnosticErrorInEditedFile(t *testing.T) {
-       // This test is very basic: start with a clean Go program, make an error, and
-       // get a diagnostic for that error. However, it also demonstrates how to
-       // combine Expectations to await more complex state in the editor.
-       runner.Run(t, exampleProgram, func(t *testing.T, env *Env) {
-               // Deleting the 'n' at the end of Println should generate a single error
-               // diagnostic.
-               env.OpenFile("main.go")
-               env.RegexpReplace("main.go", "Printl(n)", "")
-               env.Await(
-                       // Once we have gotten diagnostics for the change above, we should
-                       // satisfy the DiagnosticAtRegexp assertion.
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                               env.DiagnosticAtRegexp("main.go", "Printl"),
-                       ),
-                       // Assert that this test has sent no error logs to the client. This is not
-                       // strictly necessary for testing this regression, but is included here
-                       // as an example of using the NoErrorLogs() expectation. Feel free to
-                       // delete.
-                       NoErrorLogs(),
-               )
-       })
-}
-
-func TestMissingImportDiagsClearOnFirstFile(t *testing.T) {
-       const onlyMod = `
--- go.mod --
-module mod.com
-
-go 1.12
-`
-       runner.Run(t, onlyMod, func(t *testing.T, env *Env) {
-               env.CreateBuffer("main.go", `package main
-
-func m() {
-       log.Println()
-}
-`)
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", "log"),
-               )
-               env.SaveBuffer("main.go")
-               env.Await(
-                       EmptyDiagnostics("main.go"),
-               )
-       })
-}
-
-func TestDiagnosticErrorInNewFile(t *testing.T) {
-       const brokenFile = `package main
-
-const Foo = "abc
-`
-       runner.Run(t, brokenFile, func(t *testing.T, env *Env) {
-               env.CreateBuffer("broken.go", brokenFile)
-               env.Await(env.DiagnosticAtRegexp("broken.go", "\"abc"))
-       })
-}
-
-// badPackage contains a duplicate definition of the 'a' const.
-const badPackage = `
--- go.mod --
-module mod.com
-
-go 1.12
--- a.go --
-package consts
-
-const a = 1
--- b.go --
-package consts
-
-const a = 2
-`
-
-func TestDiagnosticClearingOnEdit(t *testing.T) {
-       runner.Run(t, badPackage, func(t *testing.T, env *Env) {
-               env.OpenFile("b.go")
-               env.Await(env.DiagnosticAtRegexp("a.go", "a = 1"), env.DiagnosticAtRegexp("b.go", "a = 2"))
-
-               // Fix the error by editing the const name in b.go to `b`.
-               env.RegexpReplace("b.go", "(a) = 2", "b")
-               env.Await(
-                       EmptyDiagnostics("a.go"),
-                       EmptyDiagnostics("b.go"),
-               )
-       })
-}
-
-func TestDiagnosticClearingOnDelete_Issue37049(t *testing.T) {
-       runner.Run(t, badPackage, func(t *testing.T, env *Env) {
-               env.OpenFile("a.go")
-               env.Await(env.DiagnosticAtRegexp("a.go", "a = 1"), env.DiagnosticAtRegexp("b.go", "a = 2"))
-               env.RemoveWorkspaceFile("b.go")
-
-               env.Await(EmptyDiagnostics("a.go"), EmptyDiagnostics("b.go"))
-       })
-}
-
-func TestDiagnosticClearingOnClose(t *testing.T) {
-       runner.Run(t, badPackage, func(t *testing.T, env *Env) {
-               env.CreateBuffer("c.go", `package consts
-
-const a = 3`)
-               env.Await(
-                       env.DiagnosticAtRegexp("a.go", "a = 1"),
-                       env.DiagnosticAtRegexp("b.go", "a = 2"),
-                       env.DiagnosticAtRegexp("c.go", "a = 3"))
-               env.CloseBuffer("c.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("a.go", "a = 1"),
-                       env.DiagnosticAtRegexp("b.go", "a = 2"),
-                       EmptyDiagnostics("c.go"))
-       })
-}
-
-// Tests golang/go#37978.
-func TestIssue37978(t *testing.T) {
-       runner.Run(t, exampleProgram, func(t *testing.T, env *Env) {
-               // Create a new workspace-level directory and empty file.
-               env.CreateBuffer("c/c.go", "")
-
-               // Write the file contents with a missing import.
-               env.EditBuffer("c/c.go", fake.Edit{
-                       Text: `package c
-
-const a = http.MethodGet
-`,
-               })
-               env.Await(
-                       env.DiagnosticAtRegexp("c/c.go", "http.MethodGet"),
-               )
-               // Save file, which will organize imports, adding the expected import.
-               // Expect the diagnostics to clear.
-               env.SaveBuffer("c/c.go")
-               env.Await(
-                       EmptyDiagnostics("c/c.go"),
-               )
-       })
-}
-
-// Tests golang/go#38878: good a.go, bad a_test.go, remove a_test.go but its errors remain
-// If the file is open in the editor, this is working as intended
-// If the file is not open in the editor, the errors go away
-const test38878 = `
--- go.mod --
-module foo
-
--- a.go --
-package x
-
-func f() {}
-
--- a_test.go --
-package x
-
-import "testing"
-
-func TestA(t *testing.T) {
-       f(3)
-}
-`
-
-func TestRmTest38878Close(t *testing.T) {
-       runner.Run(t, test38878, func(t *testing.T, env *Env) {
-               env.OpenFile("a_test.go")
-               env.Await(DiagnosticAt("a_test.go", 5, 3))
-               env.CloseBuffer("a_test.go")
-               env.RemoveWorkspaceFile("a_test.go")
-               // diagnostics go away
-               env.Await(EmptyDiagnostics("a_test.go"))
-       })
-}
-
-func TestRmTest38878(t *testing.T) {
-       log.SetFlags(log.Lshortfile)
-       runner.Run(t, test38878, func(t *testing.T, env *Env) {
-               env.OpenFile("a_test.go")
-               env.Await(DiagnosticAt("a_test.go", 5, 3))
-               env.Sandbox.Workdir.RemoveFile(context.Background(), "a_test.go")
-               // diagnostics remain after giving gopls a chance to do something
-               // (there is not yet a better way to decide gopls isn't going
-               // to do anything)
-               time.Sleep(time.Second)
-               env.Await(DiagnosticAt("a_test.go", 5, 3))
-       })
-}
-
-// TestNoMod confirms that gopls continues to work when a user adds a go.mod
-// file to their workspace.
-func TestNoMod(t *testing.T) {
-       const noMod = `
--- main.go --
-package main
-
-import "mod.com/bob"
-
-func main() {
-       bob.Hello()
-}
--- bob/bob.go --
-package bob
-
-func Hello() {
-       var x int
-}
-`
-
-       t.Run("manual", func(t *testing.T) {
-               runner.Run(t, noMod, func(t *testing.T, env *Env) {
-                       env.Await(
-                               env.DiagnosticAtRegexp("main.go", `"mod.com/bob"`),
-                       )
-                       env.CreateBuffer("go.mod", `module mod.com
-
-       go 1.12
-`)
-                       env.SaveBuffer("go.mod")
-                       env.Await(
-                               EmptyDiagnostics("main.go"),
-                       )
-                       var d protocol.PublishDiagnosticsParams
-                       env.Await(
-                               OnceMet(
-                                       env.DiagnosticAtRegexp("bob/bob.go", "x"),
-                                       ReadDiagnostics("bob/bob.go", &d),
-                               ),
-                       )
-                       if len(d.Diagnostics) != 1 {
-                               t.Fatalf("expected 1 diagnostic, got %v", len(d.Diagnostics))
-                       }
-               })
-       })
-       t.Run("initialized", func(t *testing.T) {
-               runner.Run(t, noMod, func(t *testing.T, env *Env) {
-                       env.Await(
-                               env.DiagnosticAtRegexp("main.go", `"mod.com/bob"`),
-                       )
-                       env.RunGoCommand("mod", "init", "mod.com")
-                       env.Await(
-                               EmptyDiagnostics("main.go"),
-                               env.DiagnosticAtRegexp("bob/bob.go", "x"),
-                       )
-               })
-       })
-
-       t.Run("without workspace module", func(t *testing.T) {
-               withOptions(
-                       WithModes(WithoutExperiments),
-               ).run(t, noMod, func(t *testing.T, env *Env) {
-                       env.Await(
-                               env.DiagnosticAtRegexp("main.go", `"mod.com/bob"`),
-                       )
-                       if err := env.Sandbox.RunGoCommand(env.Ctx, "", "mod", []string{"init", "mod.com"}); err != nil {
-                               t.Fatal(err)
-                       }
-                       env.Await(
-                               EmptyDiagnostics("main.go"),
-                               env.DiagnosticAtRegexp("bob/bob.go", "x"),
-                       )
-               })
-       })
-}
-
-// Tests golang/go#38267.
-func TestIssue38267(t *testing.T) {
-       const testPackage = `
--- go.mod --
-module mod.com
-
-go 1.12
--- lib.go --
-package lib
-
-func Hello(x string) {
-       _ = x
-}
--- lib_test.go --
-package lib
-
-import "testing"
-
-type testStruct struct{
-       name string
-}
-
-func TestHello(t *testing.T) {
-       testStructs := []*testStruct{
-               &testStruct{"hello"},
-               &testStruct{"goodbye"},
-       }
-       for y := range testStructs {
-               _ = y
-       }
-}
-`
-
-       runner.Run(t, testPackage, func(t *testing.T, env *Env) {
-               env.OpenFile("lib_test.go")
-               env.Await(
-                       DiagnosticAt("lib_test.go", 10, 2),
-                       DiagnosticAt("lib_test.go", 11, 2),
-               )
-               env.OpenFile("lib.go")
-               env.RegexpReplace("lib.go", "_ = x", "var y int")
-               env.Await(
-                       env.DiagnosticAtRegexp("lib.go", "y int"),
-                       EmptyDiagnostics("lib_test.go"),
-               )
-       })
-}
-
-// Tests golang/go#38328.
-func TestPackageChange_Issue38328(t *testing.T) {
-       const packageChange = `
--- go.mod --
-module fake
--- a.go --
-package foo
-func main() {}
-`
-       runner.Run(t, packageChange, func(t *testing.T, env *Env) {
-               env.OpenFile("a.go")
-               env.RegexpReplace("a.go", "foo", "foox")
-               env.Await(
-                       // When the bug reported in #38328 was present, we didn't get erroneous
-                       // file diagnostics until after the didChange message generated by the
-                       // package renaming was fully processed. Therefore, in order for this
-                       // test to actually exercise the bug, we must wait until that work has
-                       // completed.
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                               NoDiagnostics("a.go"),
-                       ),
-               )
-       })
-}
-
-const testPackageWithRequire = `
--- go.mod --
-module mod.com
-
-go 1.12
-
-require (
-       foo.test v1.2.3
-)
--- print.go --
-package lib
-
-import (
-       "fmt"
-
-       "foo.test/bar"
-)
-
-func PrintAnswer() {
-       fmt.Printf("answer: %s", bar.Answer)
-}
-`
-
-const testPackageWithRequireProxy = `
--- foo.test@v1.2.3/go.mod --
-module foo.test
-
-go 1.12
--- foo.test@v1.2.3/bar/const.go --
-package bar
-
-const Answer = 42
-`
-
-func TestResolveDiagnosticWithDownload(t *testing.T) {
-       runner.Run(t, testPackageWithRequire, func(t *testing.T, env *Env) {
-               env.OpenFile("print.go")
-               // Check that gopackages correctly loaded this dependency. We should get a
-               // diagnostic for the wrong formatting type.
-               // TODO: we should be able to easily also match the diagnostic message.
-               env.Await(env.DiagnosticAtRegexp("print.go", "fmt.Printf"))
-       }, WithProxyFiles(testPackageWithRequireProxy))
-}
-
-func TestMissingDependency(t *testing.T) {
-       runner.Run(t, testPackageWithRequire, func(t *testing.T, env *Env) {
-               env.OpenFile("print.go")
-               env.Await(LogMatching(protocol.Error, "initial workspace load failed", 1))
-       })
-}
-
-// Tests golang/go#36951.
-func TestAdHocPackages_Issue36951(t *testing.T) {
-       const adHoc = `
--- b/b.go --
-package b
-
-func Hello() {
-       var x int
-}
-`
-       runner.Run(t, adHoc, func(t *testing.T, env *Env) {
-               env.OpenFile("b/b.go")
-               env.Await(env.DiagnosticAtRegexp("b/b.go", "x"))
-       })
-}
-
-// Tests golang/go#37984: GOPATH should be read from the go command.
-func TestNoGOPATH_Issue37984(t *testing.T) {
-       const files = `
--- main.go --
-package main
-
-func _() {
-       fmt.Println("Hello World")
-}
-`
-       editorConfig := EditorConfig{Env: map[string]string{"GOPATH": ""}}
-       withOptions(editorConfig).run(t, files, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               env.Await(env.DiagnosticAtRegexp("main.go", "fmt"))
-               env.SaveBuffer("main.go")
-               env.Await(EmptyDiagnostics("main.go"))
-       })
-}
-
-// Tests golang/go#38669.
-func TestEqualInEnv_Issue38669(t *testing.T) {
-       const files = `
--- go.mod --
-module mod.com
-
--- main.go --
-package main
-
-var _ = x.X
--- x/x.go --
-package x
-
-var X = 0
-`
-       editorConfig := EditorConfig{Env: map[string]string{"GOFLAGS": "-tags=foo"}}
-       withOptions(editorConfig).run(t, files, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               env.OrganizeImports("main.go")
-               env.Await(EmptyDiagnostics("main.go"))
-       })
-}
-
-// Tests golang/go#38467.
-func TestNoSuggestedFixesForGeneratedFiles_Issue38467(t *testing.T) {
-       const generated = `
--- go.mod --
-module mod.com
-
--- main.go --
-package main
-
-// Code generated by generator.go. DO NOT EDIT.
-
-func _() {
-       for i, _ := range []string{} {
-               _ = i
-       }
-}
-`
-       runner.Run(t, generated, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               original := env.ReadWorkspaceFile("main.go")
-               var d protocol.PublishDiagnosticsParams
-               env.Await(
-                       OnceMet(
-                               DiagnosticAt("main.go", 5, 8),
-                               ReadDiagnostics("main.go", &d),
-                       ),
-               )
-               // Apply fixes and save the buffer.
-               env.ApplyQuickFixes("main.go", d.Diagnostics)
-               env.SaveBuffer("main.go")
-               fixed := env.ReadWorkspaceFile("main.go")
-               if original != fixed {
-                       t.Fatalf("generated file was changed by quick fixes:\n%s", tests.Diff(original, fixed))
-               }
-       })
-}
-
-// Expect a module/GOPATH error if there is an error in the file at startup.
-// Tests golang/go#37279.
-func TestShowMessage_Issue37279(t *testing.T) {
-       const noModule = `
--- a.go --
-package foo
-
-func f() {
-       fmt.Printl()
-}
-`
-       runner.Run(t, noModule, func(t *testing.T, env *Env) {
-               env.OpenFile("a.go")
-               env.Await(env.DiagnosticAtRegexp("a.go", "fmt.Printl"), ShownMessage(""))
-       })
-}
-
-// Expect no module/GOPATH error if there is no error in the file.
-// Tests golang/go#37279.
-func TestNoShowMessage_Issue37279(t *testing.T) {
-       const noModule = `
--- a.go --
-package foo
-
-func f() {
-}
-`
-       runner.Run(t, noModule, func(t *testing.T, env *Env) {
-               env.OpenFile("a.go")
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1),
-                               NoDiagnostics("a.go"),
-                       ),
-                       NoShowMessage(),
-               )
-               // introduce an error, expect no Show Message
-               env.RegexpReplace("a.go", "func", "fun")
-               env.Await(env.DiagnosticAtRegexp("a.go", "fun"), NoShowMessage())
-       })
-}
-
-func TestNonGoFolder(t *testing.T) {
-       const files = `
--- hello.txt --
-hi mom
-`
-       for _, go111module := range []string{"on", "off", ""} {
-               t.Run(fmt.Sprintf("GO111MODULE_%v", go111module), func(t *testing.T) {
-                       withOptions(EditorConfig{
-                               Env: map[string]string{"GO111MODULE": go111module},
-                       }).run(t, files, func(t *testing.T, env *Env) {
-                               env.OpenFile("hello.txt")
-                               env.Await(
-                                       OnceMet(
-                                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1),
-                                               NoShowMessage(),
-                                       ),
-                               )
-                       })
-               })
-       }
-}
-
-// Tests golang/go#38602.
-func TestNonexistentFileDiagnostics_Issue38602(t *testing.T) {
-       const collision = `
--- x/x.go --
-package x
-
-import "x/hello"
-
-func Hello() {
-       hello.HiThere()
-}
--- x/main.go --
-package main
-
-func main() {
-       fmt.Println("")
-}
-`
-       runner.Run(t, collision, func(t *testing.T, env *Env) {
-               env.OpenFile("x/main.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("x/main.go", "fmt.Println"),
-               )
-               env.OrganizeImports("x/main.go")
-               // span.Parse misparses the error message when multiple packages are
-               // defined in the same directory, creating a garbage filename.
-               // Previously, we would send diagnostics for this nonexistent file.
-               // This test checks that we don't send diagnostics for this file.
-               dir, err := os.Getwd()
-               if err != nil {
-                       t.Fatal(err)
-               }
-               badFile := fmt.Sprintf("%s/found packages main (main.go) and x (x.go) in %s/src/x", dir, env.Sandbox.GOPATH())
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                               EmptyDiagnostics("x/main.go"),
-                       ),
-                       NoDiagnostics(badFile),
-               )
-       }, InGOPATH())
-}
-
-const ardanLabsProxy = `
--- github.com/ardanlabs/conf@v1.2.3/go.mod --
-module github.com/ardanlabs/conf
-
-go 1.12
--- github.com/ardanlabs/conf@v1.2.3/conf.go --
-package conf
-
-var ErrHelpWanted error
-`
-
-// Test for golang/go#38211.
-func Test_Issue38211(t *testing.T) {
-       testenv.NeedsGo1Point(t, 14)
-       const ardanLabs = `
--- go.mod --
-module mod.com
-
-go 1.14
--- main.go --
-package main
-
-import "github.com/ardanlabs/conf"
-
-func main() {
-       _ = conf.ErrHelpWanted
-}
-`
-       withOptions(
-               WithProxyFiles(ardanLabsProxy),
-       ).run(t, ardanLabs, func(t *testing.T, env *Env) {
-               // Expect a diagnostic with a suggested fix to add
-               // "github.com/ardanlabs/conf" to the go.mod file.
-               env.OpenFile("go.mod")
-               env.OpenFile("main.go")
-               var d protocol.PublishDiagnosticsParams
-               env.Await(
-                       OnceMet(
-                               env.DiagnosticAtRegexp("main.go", `"github.com/ardanlabs/conf"`),
-                               ReadDiagnostics("main.go", &d),
-                       ),
-               )
-               env.ApplyQuickFixes("main.go", d.Diagnostics)
-               env.SaveBuffer("go.mod")
-               env.Await(
-                       EmptyDiagnostics("main.go"),
-               )
-               // Comment out the line that depends on conf and expect a
-               // diagnostic and a fix to remove the import.
-               env.RegexpReplace("main.go", "_ = conf.ErrHelpWanted", "//_ = conf.ErrHelpWanted")
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", `"github.com/ardanlabs/conf"`),
-               )
-               env.SaveBuffer("main.go")
-               // Expect a diagnostic and fix to remove the dependency in the go.mod.
-               env.Await(EmptyDiagnostics("main.go"))
-               env.Await(
-                       OnceMet(
-                               env.DiagnosticAtRegexp("go.mod", "require github.com/ardanlabs/conf"),
-                               ReadDiagnostics("go.mod", &d),
-                       ),
-               )
-               env.ApplyQuickFixes("go.mod", d.Diagnostics)
-               env.SaveBuffer("go.mod")
-               env.Await(
-                       EmptyDiagnostics("go.mod"),
-               )
-               // Uncomment the lines and expect a new diagnostic for the import.
-               env.RegexpReplace("main.go", "//_ = conf.ErrHelpWanted", "_ = conf.ErrHelpWanted")
-               env.SaveBuffer("main.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", `"github.com/ardanlabs/conf"`),
-               )
-       })
-}
-
-// Test for golang/go#38207.
-func TestNewModule_Issue38207(t *testing.T) {
-       testenv.NeedsGo1Point(t, 14)
-       const emptyFile = `
--- go.mod --
-module mod.com
-
-go 1.12
--- main.go --
-`
-       withOptions(
-               WithProxyFiles(ardanLabsProxy),
-       ).run(t, emptyFile, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               env.OpenFile("go.mod")
-               env.EditBuffer("main.go", fake.NewEdit(0, 0, 0, 0, `package main
-
-import "github.com/ardanlabs/conf"
-
-func main() {
-       _ = conf.ErrHelpWanted
-}
-`))
-               env.SaveBuffer("main.go")
-               var d protocol.PublishDiagnosticsParams
-               env.Await(
-                       OnceMet(
-                               env.DiagnosticAtRegexp("main.go", `"github.com/ardanlabs/conf"`),
-                               ReadDiagnostics("main.go", &d),
-                       ),
-               )
-               env.ApplyQuickFixes("main.go", d.Diagnostics)
-               env.Await(
-                       EmptyDiagnostics("main.go"),
-               )
-       })
-}
-
-// Test for golang/go#36960.
-func TestNewFileBadImports_Issue36960(t *testing.T) {
-       testenv.NeedsGo1Point(t, 14)
-       const simplePackage = `
--- go.mod --
-module mod.com
-
-go 1.14
--- a/a1.go --
-package a
-
-import "fmt"
-
-func _() {
-       fmt.Println("hi")
-}
-`
-       runner.Run(t, simplePackage, func(t *testing.T, env *Env) {
-               env.OpenFile("a/a1.go")
-               env.CreateBuffer("a/a2.go", ``)
-               if err := env.Editor.SaveBufferWithoutActions(env.Ctx, "a/a2.go"); err != nil {
-                       t.Fatal(err)
-               }
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 1),
-                               NoDiagnostics("a/a1.go"),
-                       ),
-               )
-               env.EditBuffer("a/a2.go", fake.NewEdit(0, 0, 0, 0, `package a`))
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                               NoDiagnostics("a/a1.go"),
-                       ),
-               )
-       })
-}
-
-// This test tries to replicate the workflow of a user creating a new x test.
-// It also tests golang/go#39315.
-func TestManuallyCreatingXTest(t *testing.T) {
-       // Only for 1.15 because of golang/go#37971.
-       testenv.NeedsGo1Point(t, 15)
-
-       // Create a package that already has a test variant (in-package test).
-       const testVariant = `
--- go.mod --
-module mod.com
-
-go 1.15
--- hello/hello.go --
-package hello
-
-func Hello() {
-       var x int
-}
--- hello/hello_test.go --
-package hello
-
-import "testing"
-
-func TestHello(t *testing.T) {
-       var x int
-       Hello()
-}
-`
-       runner.Run(t, testVariant, func(t *testing.T, env *Env) {
-               // Open the file, triggering the workspace load.
-               // There are errors in the code to ensure all is working as expected.
-               env.OpenFile("hello/hello.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("hello/hello.go", "x"),
-                       env.DiagnosticAtRegexp("hello/hello_test.go", "x"),
-               )
-
-               // Create an empty file with the intention of making it an x test.
-               // This resembles a typical flow in an editor like VS Code, in which
-               // a user would create an empty file and add content, saving
-               // intermittently.
-               // TODO(rstambler): There might be more edge cases here, as file
-               // content can be added incrementally.
-               env.CreateBuffer("hello/hello_x_test.go", ``)
-
-               // Save the empty file (no actions since formatting will fail).
-               env.Editor.SaveBufferWithoutActions(env.Ctx, "hello/hello_x_test.go")
-
-               // Add the content. The missing import is for the package under test.
-               env.EditBuffer("hello/hello_x_test.go", fake.NewEdit(0, 0, 0, 0, `package hello_test
-
-import (
-       "testing"
-)
-
-func TestHello(t *testing.T) {
-       hello.Hello()
-}
-`))
-               // Expect a diagnostic for the missing import. Save, which should
-               // trigger import organization. The diagnostic should clear.
-               env.Await(
-                       env.DiagnosticAtRegexp("hello/hello_x_test.go", "hello.Hello"),
-               )
-               env.SaveBuffer("hello/hello_x_test.go")
-               env.Await(
-                       EmptyDiagnostics("hello/hello_x_test.go"),
-               )
-       })
-}
-
-// Reproduce golang/go#40690.
-func TestCreateOnlyXTest(t *testing.T) {
-       t.Skip("golang/go#40690 is not resolved yet.")
-
-       const mod = `
-       -- go.mod --
-       module mod.com
-       -- foo/foo.go --
-       package foo
-       -- foo/bar_test.go --
-       `
-       run(t, mod, func(t *testing.T, env *Env) {
-               env.OpenFile("foo/bar_test.go")
-               env.EditBuffer("foo/bar_test.go", fake.NewEdit(0, 0, 0, 0, `package foo
-       `))
-               env.Await(
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-               )
-               env.RegexpReplace("foo/bar_test.go", "package foo", "package foo_test")
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 2),
-                               NoErrorLogs(),
-                       ),
-               )
-       })
-}
-
-func TestChangePackageName(t *testing.T) {
-       t.Skip("This issue hasn't been fixed yet. See golang.org/issue/41061.")
-
-       const mod = `
--- go.mod --
-module mod.com
--- foo/foo.go --
-package foo
--- foo/bar_test.go --
-package foo_
-`
-       run(t, mod, func(t *testing.T, env *Env) {
-               env.OpenFile("foo/bar_test.go")
-               env.RegexpReplace("foo/bar_test.go", "package foo_", "package foo_test")
-               env.SaveBuffer("foo/bar_test.go")
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 1),
-                               NoDiagnostics("foo/bar_test.go"),
-                       ),
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 1),
-                               NoDiagnostics("foo/foo.go"),
-                       ),
-               )
-       })
-}
-
-// Reproduces golang/go#40825.
-func TestEmptyGOPATHXTest_40825(t *testing.T) {
-       const files = `
--- x.go --
-package x
--- x_test.go --
-`
-
-       withOptions(InGOPATH()).run(t, files, func(t *testing.T, env *Env) {
-               env.OpenFile("x_test.go")
-               env.EditBuffer("x_test.go", fake.NewEdit(0, 0, 0, 0, "pack"))
-               env.Await(
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                       NoShowMessage(),
-               )
-       })
-}
-
-func TestIgnoredFiles(t *testing.T) {
-       const ws = `
--- go.mod --
-module mod.com
-
-go 1.15
--- _foo/x.go --
-package x
-
-var _ = foo.Bar
-`
-       runner.Run(t, ws, func(t *testing.T, env *Env) {
-               env.OpenFile("_foo/x.go")
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1),
-                               NoDiagnostics("_foo/x.go"),
-                       ))
-       })
-}
-
-// Partially reproduces golang/go#38977, moving a file between packages.
-// It also gets hit by some go command bug fixed in 1.15, but we don't
-// care about that so much here.
-func TestDeletePackage(t *testing.T) {
-       const ws = `
--- go.mod --
-module mod.com
-
-go 1.15
--- a/a.go --
-package a
-
-const A = 1
-
--- b/b.go --
-package b
-
-import "mod.com/a"
-
-const B = a.A
-
--- c/c.go --
-package c
-
-import "mod.com/a"
-
-const C = a.A
-`
-       runner.Run(t, ws, func(t *testing.T, env *Env) {
-               env.OpenFile("b/b.go")
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1))
-               // Delete c/c.go, the only file in package c.
-               env.RemoveWorkspaceFile("c/c.go")
-
-               // We should still get diagnostics for files that exist.
-               env.RegexpReplace("b/b.go", `a.A`, "a.Nonexistant")
-               env.Await(env.DiagnosticAtRegexp("b/b.go", `Nonexistant`))
-       })
-}
-
-// This is a copy of the scenario_default/quickfix_empty_files.txt test from
-// govim. Reproduces golang/go#39646.
-func TestQuickFixEmptyFiles(t *testing.T) {
-       testenv.NeedsGo1Point(t, 15)
-
-       const mod = `
--- go.mod --
-module mod.com
-
-go 1.12
-`
-       // To fully recreate the govim tests, we create files by inserting
-       // a newline, adding to the file, and then deleting the newline.
-       // Wait for each event to process to avoid cancellations and force
-       // package loads.
-       writeGoVim := func(env *Env, name, content string) {
-               env.WriteWorkspaceFile(name, "")
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChangeWatchedFiles), 1))
-
-               env.CreateBuffer(name, "\n")
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1))
-
-               env.EditBuffer(name, fake.NewEdit(1, 0, 1, 0, content))
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1))
-
-               env.EditBuffer(name, fake.NewEdit(0, 0, 1, 0, ""))
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1))
-       }
-
-       const p = `package p; func DoIt(s string) {};`
-       const main = `package main
-
-import "mod.com/p"
-
-func main() {
-       p.DoIt(5)
-}
-`
-       // A simple version of the test that reproduces most of the problems it
-       // exposes.
-       t.Run("short", func(t *testing.T) {
-               runner.Run(t, mod, func(t *testing.T, env *Env) {
-                       writeGoVim(env, "p/p.go", p)
-                       writeGoVim(env, "main.go", main)
-                       env.Await(env.DiagnosticAtRegexp("main.go", "5"))
-               })
-       })
-
-       // A full version that replicates the whole flow of the test.
-       t.Run("full", func(t *testing.T) {
-               runner.Run(t, mod, func(t *testing.T, env *Env) {
-                       writeGoVim(env, "p/p.go", p)
-                       writeGoVim(env, "main.go", main)
-                       writeGoVim(env, "p/p_test.go", `package p
-
-import "testing"
-
-func TestDoIt(t *testing.T) {
-       DoIt(5)
-}
-`)
-                       writeGoVim(env, "p/x_test.go", `package p_test
-
-import (
-       "testing"
-
-       "mod.com/p"
-)
-
-func TestDoIt(t *testing.T) {
-       p.DoIt(5)
-}
-`)
-                       env.Await(
-                               env.DiagnosticAtRegexp("main.go", "5"),
-                               env.DiagnosticAtRegexp("p/p_test.go", "5"),
-                               env.DiagnosticAtRegexp("p/x_test.go", "5"),
-                       )
-                       env.RegexpReplace("p/p.go", "s string", "i int")
-                       env.Await(
-                               EmptyDiagnostics("main.go"),
-                               EmptyDiagnostics("p/p_test.go"),
-                               EmptyDiagnostics("p/x_test.go"),
-                       )
-               })
-       })
-}
-
-func TestSingleFile(t *testing.T) {
-       const mod = `
--- go.mod --
-module mod.com
-
-go 1.13
--- a/a.go --
-package a
-
-func _() {
-       var x int
-}
-`
-       runner.Run(t, mod, func(t *testing.T, env *Env) {
-               env.OpenFile("a/a.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("a/a.go", "x"),
-               )
-       }, WithoutWorkspaceFolders())
-}
-
-// Reproduces the case described in
-// https://github.com/golang/go/issues/39296#issuecomment-652058883.
-func TestPkgm(t *testing.T) {
-       const basic = `
--- go.mod --
-module mod.com
-
-go 1.15
--- foo/foo.go --
-package foo
-
-import "fmt"
-
-func Foo() {
-       fmt.Println("")
-}
-`
-       runner.Run(t, basic, func(t *testing.T, env *Env) {
-               testenv.NeedsGo1Point(t, 15)
-
-               env.WriteWorkspaceFile("foo/foo_test.go", `package main
-
-func main() {
-
-}`)
-               env.OpenFile("foo/foo_test.go")
-               env.RegexpReplace("foo/foo_test.go", `package main`, `package foo`)
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1),
-                               NoDiagnostics("foo/foo.go"),
-                       ),
-               )
-       })
-}
-
-func TestClosingBuffer(t *testing.T) {
-       const basic = `
--- go.mod --
-module mod.com
-
-go 1.14
--- main.go --
-package main
-
-func main() {}
-`
-       runner.Run(t, basic, func(t *testing.T, env *Env) {
-               env.Editor.CreateBuffer(env.Ctx, "foo.go", `package main`)
-               env.Await(
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1),
-               )
-               env.CloseBuffer("foo.go")
-               env.Await(
-                       OnceMet(
-                               CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidClose), 1),
-                               NoLogMatching(protocol.Info, "packages=0"),
-                       ),
-               )
-       })
-}
-
-// Reproduces golang/go#38424.
-func TestCutAndPaste(t *testing.T) {
-       const basic = `
--- go.mod --
-module mod.com
-
-go 1.14
--- main2.go --
-package main
-`
-       runner.Run(t, basic, func(t *testing.T, env *Env) {
-               env.CreateBuffer("main.go", "")
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidOpen), 1))
-
-               env.Editor.SaveBufferWithoutActions(env.Ctx, "main.go")
-               env.Await(
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 1),
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChangeWatchedFiles), 1),
-               )
-
-               env.EditBuffer("main.go", fake.NewEdit(0, 0, 0, 0, `package main
-
-func main() {
-}
-`))
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 1))
-
-               env.SaveBuffer("main.go")
-               env.Await(
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidSave), 2),
-                       CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChangeWatchedFiles), 2),
-               )
-
-               env.EditBuffer("main.go", fake.NewEdit(0, 0, 4, 0, ""))
-               env.Await(CompletedWork(lsp.DiagnosticWorkTitle(lsp.FromDidChange), 2))
-
-               env.EditBuffer("main.go", fake.NewEdit(0, 0, 0, 0, `package main
-
-func main() {
-       var x int
-}
-`))
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", "x"),
-               )
-       })
-}
-
-// Reproduces golang/go#39763.
-func TestInvalidPackageName(t *testing.T) {
-       testenv.NeedsGo1Point(t, 15)
-
-       const pkgDefault = `
--- go.mod --
-module mod.com
--- main.go --
-package default
-
-func main() {}
-`
-       runner.Run(t, pkgDefault, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", "default"),
-               )
-       })
-}
-
-// This tests the functionality of the "limitWorkspaceScope"
-func TestLimitWorkspaceScope(t *testing.T) {
-       const mod = `
--- go.mod --
-module mod.com
--- a/main.go --
-package main
-
-func main() {}
--- main.go --
-package main
-
-func main() {
-       var x int
-}
-`
-       withOptions(WithRootPath("a")).run(t, mod, func(t *testing.T, env *Env) {
-               env.OpenFile("a/main.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("main.go", "x"),
-               )
-       })
-       withOptions(WithRootPath("a"), WithLimitWorkspaceScope()).run(t, mod, func(t *testing.T, env *Env) {
-               env.OpenFile("a/main.go")
-               env.Await(
-                       NoDiagnostics("main.go"),
-               )
-       })
-}
-
-func TestStaticcheckDiagnostic(t *testing.T) {
-       const files = `
--- go.mod --
-module mod.com
--- main.go --
-package main
-
-import "fmt"
-
-type t struct {
-       msg string
-}
-
-func main() {
-       x := []t{t{"msg"}}
-       fmt.Println(x)
-}
-`
-
-       withOptions(
-               EditorConfig{EnableStaticcheck: true},
-       ).run(t, files, func(t *testing.T, env *Env) {
-               env.OpenFile("main.go")
-               // Staticcheck should generate a diagnostic to simplify this literal.
-               env.Await(env.DiagnosticAtRegexp("main.go", `t{"msg"}`))
-       })
-}
-
-// Test some secondary diagnostics
-func TestSecondaryDiagnostics(t *testing.T) {
-       const dir = `
--- go.mod --
-module mod.com
--- main.go --
-package main
-func main() {
-       panic("not here")
-}
--- other.go --
-package main
-func main() {}
-`
-       runner.Run(t, dir, func(t *testing.T, env *Env) {
-               log.SetFlags(log.Lshortfile)
-               env.OpenFile("main.go")
-               env.OpenFile("other.go")
-               x := env.DiagnosticsFor("main.go")
-               if x == nil {
-                       t.Fatalf("expected 1 diagnostic, got none")
-               }
-               if len(x.Diagnostics) != 1 {
-                       t.Fatalf("main.go, got %d diagnostics, expected 1", len(x.Diagnostics))
-               }
-               keep := x.Diagnostics[0]
-               y := env.DiagnosticsFor("other.go")
-               if len(y.Diagnostics) != 1 {
-                       t.Fatalf("other.go: got %d diagnostics, expected 1", len(y.Diagnostics))
-               }
-               if len(y.Diagnostics[0].RelatedInformation) != 1 {
-                       t.Fatalf("got %d RelatedInformations, expected 1", len(y.Diagnostics[0].RelatedInformation))
-               }
-               // check that the RelatedInformation matches the error from main.go
-               c := y.Diagnostics[0].RelatedInformation[0]
-               if c.Location.Range != keep.Range {
-                       t.Errorf("locations don't match. Got %v expected %v", c.Location.Range, keep.Range)
-               }
-       })
-}
-
-func TestNotifyOrphanedFiles(t *testing.T) {
-       // Need GO111MODULE=on for this test to work with Go 1.12.
-       testenv.NeedsGo1Point(t, 13)
-
-       const files = `
--- go.mod --
-module mod.com
-
-go 1.12
--- a/a.go --
-package a
-
-func main() {
-       var x int
-}
--- a/a_ignore.go --
-// +build ignore
-
-package a
-
-func _() {
-       var x int
-}
-`
-       run(t, files, func(t *testing.T, env *Env) {
-               env.OpenFile("a/a.go")
-               env.Await(
-                       env.DiagnosticAtRegexp("a/a.go", "x"),
-               )
-               env.OpenFile("a/a_ignore.go")
-               env.Await(
-                       DiagnosticAt("a/a_ignore.go", 2, 8),
-               )
-       })
-}
-
-func TestEnableAllExperiments(t *testing.T) {
-       const mod = `
--- go.mod --
-module mod.com
-
--- main.go --
-package main
-
-import "bytes"
-
-func b(c bytes.Buffer) {
-       _ = 1
-}
-`
-       withOptions(
-               EditorConfig{
-                       AllExperiments: true,
-               },
-       ).run(t, mod, func(t *testing.T, env *Env) {
-               // Confirm that the setting doesn't cause any warnings.
-               env.Await(NoShowMessage())
-       })
-}
-
-func TestSwig(t *testing.T) {
-       t.Skipf("skipped until golang/go#37098 is resolved")
-
-       const mod = `
--- go.mod --
-module mod.com
--- pkg/simple/export_swig.go --
-package simple
-
-func ExportSimple(x, y int) int {
-       return Gcd(x, y)
-}
--- pkg/simple/simple.swigcxx --
-%module simple
-
-%inline %{
-extern int gcd(int x, int y)
-{
-  int g;
-  g = y;
-  while (x > 0) {
-    g = x;
-    x = y % x;
-    y = g;
-  }
-  return g;
-}
-%}
--- main.go --
-package a
-
-func main() {
-       var x int
-}
-`
-       run(t, mod, func(t *testing.T, env *Env) {
-               env.Await(
-                       OnceMet(
-                               InitialWorkspaceLoad,
-                               NoDiagnosticWithMessage("illegal character U+0023 '#'"),
-                       ),
-               )
-       })
-}
-
-// When foo_test.go is opened, gopls will object to the borked package name.
-// This test asserts that when the package name is fixed, gopls will soon after
-// have no more complaints about it.
-// https://github.com/golang/go/issues/41061
-func TestRenamePackage(t *testing.T) {
-       t.Skip("Waiting for the fix that makes this pass: https://github.com/golang/go/issues/41061")
-
-       const contents = `
--- go.mod --
-module mod.com
--- foo.go --
-package foo
--- foo_test.go --
-package foo_`
-
-       runner.Run(t, contents, func(t *testing.T, env *Env) {
-               env.OpenFile("foo_test.go")
-               env.RegexpReplace("foo_test.go", "foo_", "foo_test")
-               env.SaveBuffer("foo_test.go")
-               env.Await(
-                       EmptyDiagnostics("foo_test.go"),
-               )
-       })
-}