Giant blob of minor changes

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / honnef.co / go / tools@v0.0.1-2020.1.5 / ir / irutil / switch_test.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/ir/irutil/switch_test.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/ir/irutil/switch_test.go
new file mode 100644 (file)
index 0000000..5d689ee
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/honnef.co/go/tools@v0.0.1-2020.1.5/ir/irutil/switch_test.go
@@ -0,0 +1,111 @@
+// 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.
+
+// No testdata on Android.
+
+// +build !android
+
+package irutil
+
+import (
+       "bytes"
+       "fmt"
+       "go/parser"
+       "strings"
+       "testing"
+
+       "golang.org/x/tools/go/loader"
+       "honnef.co/go/tools/ir"
+)
+
+func TestSwitches(t *testing.T) {
+       conf := loader.Config{ParserMode: parser.ParseComments}
+       f, err := conf.ParseFile("testdata/switches.go", nil)
+       if err != nil {
+               t.Error(err)
+               return
+       }
+
+       conf.CreateFromFiles("main", f)
+       iprog, err := conf.Load()
+       if err != nil {
+               t.Error(err)
+               return
+       }
+
+       prog := CreateProgram(iprog, 0)
+       mainPkg := prog.Package(iprog.Created[0].Pkg)
+       mainPkg.Build()
+
+       for _, mem := range mainPkg.Members {
+               if fn, ok := mem.(*ir.Function); ok {
+                       if fn.Synthetic != "" {
+                               continue // e.g. init()
+                       }
+                       // Each (multi-line) "switch" comment within
+                       // this function must match the printed form
+                       // of a ConstSwitch.
+                       var wantSwitches []string
+                       for _, c := range f.Comments {
+                               if fn.Source().Pos() <= c.Pos() && c.Pos() < fn.Source().End() {
+                                       text := strings.TrimSpace(c.Text())
+                                       if strings.HasPrefix(text, "switch ") {
+                                               wantSwitches = append(wantSwitches, text)
+                                       }
+                               }
+                       }
+
+                       switches := Switches(fn)
+                       if len(switches) != len(wantSwitches) {
+                               t.Errorf("in %s, found %d switches, want %d", fn, len(switches), len(wantSwitches))
+                       }
+                       for i, sw := range switches {
+                               got := sw.testString()
+                               if i >= len(wantSwitches) {
+                                       continue
+                               }
+                               want := wantSwitches[i]
+                               if got != want {
+                                       t.Errorf("in %s, found switch %d: got <<%s>>, want <<%s>>", fn, i, got, want)
+                               }
+                       }
+               }
+       }
+}
+
+func (sw *Switch) testString() string {
+       // same as the actual String method, but use the second to last
+       // instruction instead, to skip over all the phi and sigma nodes
+       // that SSI produces.
+       var buf bytes.Buffer
+       if sw.ConstCases != nil {
+               fmt.Fprintf(&buf, "switch %s {\n", sw.X.Name())
+               for _, c := range sw.ConstCases {
+                       n := len(c.Body.Instrs) - 2
+                       if n < 0 {
+                               n = 0
+                       }
+                       fmt.Fprintf(&buf, "case %s: %s\n", c.Value.Name(), c.Body.Instrs[n])
+               }
+       } else {
+               fmt.Fprintf(&buf, "switch %s.(type) {\n", sw.X.Name())
+               for _, c := range sw.TypeCases {
+                       n := len(c.Body.Instrs) - 2
+                       if n < 0 {
+                               n = 0
+                       }
+                       fmt.Fprintf(&buf, "case %s %s: %s\n",
+                               c.Binding.Name(), c.Type, c.Body.Instrs[n])
+               }
+       }
+       if sw.Default != nil {
+               n := len(sw.Default.Instrs) - 2
+               if n < 0 {
+                       n = 0
+               }
+               fmt.Fprintf(&buf, "default: %s\n", sw.Default.Instrs[n])
+       }
+       fmt.Fprintf(&buf, "}")
+       return buf.String()
+}