X-Git-Url: https://git.josue.xyz/?a=blobdiff_plain;f=.config%2Fcoc%2Fextensions%2Fcoc-go-data%2Ftools%2Fpkg%2Fmod%2Fgolang.org%2Fx%2Ftools%40v0.0.0-20201028153306-37f0764111ff%2Fgo%2Fssa%2Ftestmain.go;fp=.config%2Fcoc%2Fextensions%2Fcoc-go-data%2Ftools%2Fpkg%2Fmod%2Fgolang.org%2Fx%2Ftools%40v0.0.0-20201028153306-37f0764111ff%2Fgo%2Fssa%2Ftestmain.go;h=c4256d1ef8ff6c799644082a01afeab8df03db7e;hb=4d07c77cf4d78cab8639e13ddc3c22495e585b0b;hp=0000000000000000000000000000000000000000;hpb=b3950616b54221c40a7dab9099bda675007e5b6e;p=dotfiles%2F.git diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/testmain.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/testmain.go new file mode 100644 index 00000000..c4256d1e --- /dev/null +++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/testmain.go @@ -0,0 +1,274 @@ +// Copyright 2013 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 ssa + +// CreateTestMainPackage synthesizes a main package that runs all the +// tests of the supplied packages. +// It is closely coupled to $GOROOT/src/cmd/go/test.go and $GOROOT/src/testing. +// +// TODO(adonovan): throws this all away now that x/tools/go/packages +// provides access to the actual synthetic test main files. + +import ( + "bytes" + "fmt" + "go/ast" + "go/parser" + "go/types" + "log" + "os" + "strings" + "text/template" +) + +// FindTests returns the Test, Benchmark, and Example functions +// (as defined by "go test") defined in the specified package, +// and its TestMain function, if any. +// +// Deprecated: Use golang.org/x/tools/go/packages to access synthetic +// testmain packages. +func FindTests(pkg *Package) (tests, benchmarks, examples []*Function, main *Function) { + prog := pkg.Prog + + // The first two of these may be nil: if the program doesn't import "testing", + // it can't contain any tests, but it may yet contain Examples. + var testSig *types.Signature // func(*testing.T) + var benchmarkSig *types.Signature // func(*testing.B) + var exampleSig = types.NewSignature(nil, nil, nil, false) // func() + + // Obtain the types from the parameters of testing.MainStart. + if testingPkg := prog.ImportedPackage("testing"); testingPkg != nil { + mainStart := testingPkg.Func("MainStart") + params := mainStart.Signature.Params() + testSig = funcField(params.At(1).Type()) + benchmarkSig = funcField(params.At(2).Type()) + + // Does the package define this function? + // func TestMain(*testing.M) + if f := pkg.Func("TestMain"); f != nil { + sig := f.Type().(*types.Signature) + starM := mainStart.Signature.Results().At(0).Type() // *testing.M + if sig.Results().Len() == 0 && + sig.Params().Len() == 1 && + types.Identical(sig.Params().At(0).Type(), starM) { + main = f + } + } + } + + // TODO(adonovan): use a stable order, e.g. lexical. + for _, mem := range pkg.Members { + if f, ok := mem.(*Function); ok && + ast.IsExported(f.Name()) && + strings.HasSuffix(prog.Fset.Position(f.Pos()).Filename, "_test.go") { + + switch { + case testSig != nil && isTestSig(f, "Test", testSig): + tests = append(tests, f) + case benchmarkSig != nil && isTestSig(f, "Benchmark", benchmarkSig): + benchmarks = append(benchmarks, f) + case isTestSig(f, "Example", exampleSig): + examples = append(examples, f) + default: + continue + } + } + } + return +} + +// Like isTest, but checks the signature too. +func isTestSig(f *Function, prefix string, sig *types.Signature) bool { + return isTest(f.Name(), prefix) && types.Identical(f.Signature, sig) +} + +// Given the type of one of the three slice parameters of testing.Main, +// returns the function type. +func funcField(slice types.Type) *types.Signature { + return slice.(*types.Slice).Elem().Underlying().(*types.Struct).Field(1).Type().(*types.Signature) +} + +// isTest tells whether name looks like a test (or benchmark, according to prefix). +// It is a Test (say) if there is a character after Test that is not a lower-case letter. +// We don't want TesticularCancer. +// Plundered from $GOROOT/src/cmd/go/test.go +func isTest(name, prefix string) bool { + if !strings.HasPrefix(name, prefix) { + return false + } + if len(name) == len(prefix) { // "Test" is ok + return true + } + return ast.IsExported(name[len(prefix):]) +} + +// CreateTestMainPackage creates and returns a synthetic "testmain" +// package for the specified package if it defines tests, benchmarks or +// executable examples, or nil otherwise. The new package is named +// "main" and provides a function named "main" that runs the tests, +// similar to the one that would be created by the 'go test' tool. +// +// Subsequent calls to prog.AllPackages include the new package. +// The package pkg must belong to the program prog. +// +// Deprecated: Use golang.org/x/tools/go/packages to access synthetic +// testmain packages. +func (prog *Program) CreateTestMainPackage(pkg *Package) *Package { + if pkg.Prog != prog { + log.Fatal("Package does not belong to Program") + } + + // Template data + var data struct { + Pkg *Package + Tests, Benchmarks, Examples []*Function + Main *Function + Go18 bool + } + data.Pkg = pkg + + // Enumerate tests. + data.Tests, data.Benchmarks, data.Examples, data.Main = FindTests(pkg) + if data.Main == nil && + data.Tests == nil && data.Benchmarks == nil && data.Examples == nil { + return nil + } + + // Synthesize source for testmain package. + path := pkg.Pkg.Path() + "$testmain" + tmpl := testmainTmpl + if testingPkg := prog.ImportedPackage("testing"); testingPkg != nil { + // In Go 1.8, testing.MainStart's first argument is an interface, not a func. + data.Go18 = types.IsInterface(testingPkg.Func("MainStart").Signature.Params().At(0).Type()) + } else { + // The program does not import "testing", but FindTests + // returned non-nil, which must mean there were Examples + // but no Test, Benchmark, or TestMain functions. + + // We'll simply call them from testmain.main; this will + // ensure they don't panic, but will not check any + // "Output:" comments. + // (We should not execute an Example that has no + // "Output:" comment, but it's impossible to tell here.) + tmpl = examplesOnlyTmpl + } + var buf bytes.Buffer + if err := tmpl.Execute(&buf, data); err != nil { + log.Fatalf("internal error expanding template for %s: %v", path, err) + } + if false { // debugging + fmt.Fprintln(os.Stderr, buf.String()) + } + + // Parse and type-check the testmain package. + f, err := parser.ParseFile(prog.Fset, path+".go", &buf, parser.Mode(0)) + if err != nil { + log.Fatalf("internal error parsing %s: %v", path, err) + } + conf := types.Config{ + DisableUnusedImportCheck: true, + Importer: importer{pkg}, + } + files := []*ast.File{f} + info := &types.Info{ + Types: make(map[ast.Expr]types.TypeAndValue), + Defs: make(map[*ast.Ident]types.Object), + Uses: make(map[*ast.Ident]types.Object), + Implicits: make(map[ast.Node]types.Object), + Scopes: make(map[ast.Node]*types.Scope), + Selections: make(map[*ast.SelectorExpr]*types.Selection), + } + testmainPkg, err := conf.Check(path, prog.Fset, files, info) + if err != nil { + log.Fatalf("internal error type-checking %s: %v", path, err) + } + + // Create and build SSA code. + testmain := prog.CreatePackage(testmainPkg, files, info, false) + testmain.SetDebugMode(false) + testmain.Build() + testmain.Func("main").Synthetic = "test main function" + testmain.Func("init").Synthetic = "package initializer" + return testmain +} + +// An implementation of types.Importer for an already loaded SSA program. +type importer struct { + pkg *Package // package under test; may be non-importable +} + +func (imp importer) Import(path string) (*types.Package, error) { + if p := imp.pkg.Prog.ImportedPackage(path); p != nil { + return p.Pkg, nil + } + if path == imp.pkg.Pkg.Path() { + return imp.pkg.Pkg, nil + } + return nil, fmt.Errorf("not found") // can't happen +} + +var testmainTmpl = template.Must(template.New("testmain").Parse(` +package main + +import "io" +import "os" +import "testing" +import p {{printf "%q" .Pkg.Pkg.Path}} + +{{if .Go18}} +type deps struct{} + +func (deps) ImportPath() string { return "" } +func (deps) MatchString(pat, str string) (bool, error) { return true, nil } +func (deps) SetPanicOnExit0(bool) {} +func (deps) StartCPUProfile(io.Writer) error { return nil } +func (deps) StartTestLog(io.Writer) {} +func (deps) StopCPUProfile() {} +func (deps) StopTestLog() error { return nil } +func (deps) WriteHeapProfile(io.Writer) error { return nil } +func (deps) WriteProfileTo(string, io.Writer, int) error { return nil } + +var match deps +{{else}} +func match(_, _ string) (bool, error) { return true, nil } +{{end}} + +func main() { + tests := []testing.InternalTest{ +{{range .Tests}} + { {{printf "%q" .Name}}, p.{{.Name}} }, +{{end}} + } + benchmarks := []testing.InternalBenchmark{ +{{range .Benchmarks}} + { {{printf "%q" .Name}}, p.{{.Name}} }, +{{end}} + } + examples := []testing.InternalExample{ +{{range .Examples}} + {Name: {{printf "%q" .Name}}, F: p.{{.Name}}}, +{{end}} + } + m := testing.MainStart(match, tests, benchmarks, examples) +{{with .Main}} + p.{{.Name}}(m) +{{else}} + os.Exit(m.Run()) +{{end}} +} + +`)) + +var examplesOnlyTmpl = template.Must(template.New("examples").Parse(` +package main + +import p {{printf "%q" .Pkg.Pkg.Path}} + +func main() { +{{range .Examples}} + p.{{.Name}}() +{{end}} +} +`))