diff options
Diffstat (limited to 'internal/lsp/cache/parse_test.go')
| -rw-r--r-- | internal/lsp/cache/parse_test.go | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/internal/lsp/cache/parse_test.go b/internal/lsp/cache/parse_test.go deleted file mode 100644 index cb620f274..000000000 --- a/internal/lsp/cache/parse_test.go +++ /dev/null @@ -1,217 +0,0 @@ -// Copyright 2019 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 cache - -import ( - "bytes" - "go/ast" - "go/format" - "go/parser" - "go/token" - "go/types" - "reflect" - "sort" - "testing" - - "golang.org/x/tools/go/packages" -) - -func TestArrayLength(t *testing.T) { - tests := []struct { - expr string - length int - }{ - {`[...]int{0,1,2,3,4,5,6,7,8,9}`, 10}, - {`[...]int{9:0}`, 10}, - {`[...]int{19-10:0}`, 10}, - {`[...]int{19-10:0, 17-10:0, 18-10:0}`, 10}, - } - - for _, tt := range tests { - expr, err := parser.ParseExpr(tt.expr) - if err != nil { - t.Fatal(err) - } - l, ok := arrayLength(expr.(*ast.CompositeLit)) - if !ok { - t.Errorf("arrayLength did not recognize expression %#v", expr) - } - if l != tt.length { - t.Errorf("arrayLength(%#v) = %v, want %v", expr, l, tt.length) - } - } -} - -func TestTrim(t *testing.T) { - tests := []struct { - name string - file string - kept []string - }{ - { - name: "delete_unused", - file: ` -type x struct{} -func y() -var z int -`, - kept: []string{}, - }, - { - // From the common type in testing. - name: "unexported_embedded", - file: ` -type x struct {} -type Exported struct { x } -`, - kept: []string{"Exported", "x"}, - }, - { - // From the d type in unicode. - name: "exported_field_unexported_type", - file: ` -type x struct {} -type Exported struct { - X x -} -`, - kept: []string{"Exported", "x"}, - }, - { - // From errNotExist in io/fs. - name: "exported_var_function_call", - file: ` -func x() int { return 0 } -var Exported = x() -`, - kept: []string{"Exported", "x"}, - }, - { - // From DefaultServeMux in net/http. - name: "exported_pointer_to_unexported_var", - file: ` -var Exported = &x -var x int -`, - kept: []string{"Exported", "x"}, - }, - { - // From DefaultWriter in goldmark/renderer/html. - name: "exported_pointer_to_composite_lit", - file: ` -var Exported = &x{} -type x struct{} -`, - kept: []string{"Exported", "x"}, - }, - { - // From SelectDir in reflect. - name: "leave_constants", - file: ` -type Enum int -const ( - _ Enum = iota - EnumOne -) -`, - kept: []string{"Enum", "EnumOne"}, - }, - { - name: "constant_conversion", - file: ` -type x int -const ( - foo x = 0 -) -`, - kept: []string{"x", "foo"}, - }, - { - name: "unexported_return", - file: ` -type x int -func Exported() x {} -type y int -type Interface interface { - Exported() y -} -`, - kept: []string{"Exported", "Interface", "x", "y"}, - }, - { - name: "drop_composite_literals", - file: ` -type x int -type Exported struct { - foo x -} -var Var = Exported{foo:1} -`, - kept: []string{"Exported", "Var"}, - }, - { - name: "drop_function_literals", - file: ` -type x int -var Exported = func() { return x(0) } -`, - kept: []string{"Exported"}, - }, - { - name: "missing_receiver_panic", - file: ` - func() foo() {} -`, - kept: []string{}, - }, - } - - for _, tt := range tests { - t.Run(tt.name, func(t *testing.T) { - fset := token.NewFileSet() - file, err := parser.ParseFile(fset, "main.go", "package main\n\n"+tt.file, parser.AllErrors) - if err != nil { - t.Fatal(err) - } - filter := &unexportedFilter{uses: map[string]bool{}} - filter.Filter([]*ast.File{file}) - pkg := types.NewPackage("main", "main") - checker := types.NewChecker(&types.Config{ - DisableUnusedImportCheck: true, - }, fset, pkg, nil) - if err := checker.Files([]*ast.File{file}); err != nil { - t.Error(err) - } - names := pkg.Scope().Names() - sort.Strings(names) - sort.Strings(tt.kept) - if !reflect.DeepEqual(names, tt.kept) { - t.Errorf("package contains names %v, wanted %v", names, tt.kept) - } - }) - } -} - -func TestPkg(t *testing.T) { - t.Skip("for manual debugging") - fset := token.NewFileSet() - pkgs, err := packages.Load(&packages.Config{ - Mode: packages.NeedSyntax | packages.NeedFiles, - Fset: fset, - }, "io") - if err != nil { - t.Fatal(err) - } - if len(pkgs[0].Errors) != 0 { - t.Fatal(pkgs[0].Errors) - } - filter := &unexportedFilter{uses: map[string]bool{}} - filter.Filter(pkgs[0].Syntax) - for _, file := range pkgs[0].Syntax { - buf := &bytes.Buffer{} - format.Node(buf, fset, file) - t.Log(buf.String()) - } -} |