// TestLineComments, using a simple test case, checks that consecutive line
// comments are properly terminated with a newline even if the AST position
// information is incorrect.
//
func TestLineComments(t *testing.T) {
const src = `// comment 1
// comment 2
// comment 3
package main
`
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "", src, parser.ParseComments)
if err != nil {
panic(err) // error in test
}
var buf bytes.Buffer
fset = token.NewFileSet() // use the wrong file set
Fprint(&buf, fset, f)
nlines := 0
for _, ch := range buf.Bytes() {
if ch == '\n' {
nlines++
}
}
const expected = 3
if nlines < expected {
t.Errorf("got %d, expected %d\n", nlines, expected)
t.Errorf("result:\n%s", buf.Bytes())
}
}
// For SGo: func(whence string, files ...NamedFile) ([][]byte, []error)
func TranslateFilesFrom(whence string, files ...NamedFile) ([][]byte, []error) {
var errs []error
fset := token.NewFileSet()
cwd, err := os.Getwd()
if err != nil {
return nil, []error{err}
}
var parsed []*ast.File
var srcs [][]byte
for _, named := range files {
src, err := ioutil.ReadAll(named.File)
if err != nil {
errs = append(errs, err)
continue
}
relPath, err := filepath.Rel(cwd, named.Path)
if err != nil {
relPath = named.Path
}
file, err := parser.ParseFile(fset, relPath, src, parser.ParseComments)
if err != nil {
errs = append(errs, err)
continue
}
srcs = append(srcs, src)
parsed = append(parsed, file)
}
// Early typecheck, because fileWithAnnotationComments adds lines and
// then type errors are reported in the wrong line.
_, typeErrs := typecheck("translate", fset, whence, parsed...)
if len(typeErrs) > 0 {
errs = append(errs, makeErrList(fset, typeErrs))
return nil, errs
}
oldFset := fset
fset = token.NewFileSet() // fileWithAnnotationComments will reparse.
for i, p := range parsed {
var err error
srcs[i], parsed[i], err = fileWithAnnotationComments(p, fset, oldFset, srcs[i])
if err != nil {
errs = append(errs, err)
}
}
if len(errs) > 0 {
return nil, errs
}
info, typeErrs := typecheck("translate", fset, whence, parsed...)
if len(typeErrs) > 0 {
errs = append(errs, makeErrList(fset, typeErrs))
return nil, errs
}
return translate(info, srcs, parsed, fset), errs
}
func ExampleConvertAST() {
fset := token.NewFileSet()
a, _ := parser.ParseFile(fset, "example.sgo", `
package example
type LinkedList struct {
Head int
// For SGo: ?*LinkedList
Tail *LinkedList
}
`, parser.ParseComments)
info := &types.Info{
Defs: map[*ast.Ident]types.Object{},
Uses: map[*ast.Ident]types.Object{},
}
cfg := &types.Config{}
cfg.Check("", fset, []*ast.File{a}, info)
importer.ConvertAST(a, info, nil)
printer.Fprint(os.Stdout, fset, a)
// Output:
// package example
//
// type LinkedList struct {
// Head int
// // For SGo: ?*LinkedList
// Tail ?*LinkedList
// }
}
// TestIncompleteSelection ensures that an incomplete selector
// expression is parsed as a (blank) *ast.SelectorExpr, not a
// *ast.BadExpr.
func TestIncompleteSelection(t *testing.T) {
for _, src := range []string{
"package p; var _ = fmt.", // at EOF
"package p; var _ = fmt.\ntype X int", // not at EOF
} {
fset := token.NewFileSet()
f, err := ParseFile(fset, "", src, 0)
if err == nil {
t.Errorf("ParseFile(%s) succeeded unexpectedly", src)
continue
}
const wantErr = "expected selector or type assertion"
if !strings.Contains(err.Error(), wantErr) {
t.Errorf("ParseFile returned wrong error %q, want %q", err, wantErr)
}
var sel *ast.SelectorExpr
ast.Inspect(f, func(n ast.Node) bool {
if n, ok := n.(*ast.SelectorExpr); ok {
sel = n
}
return true
})
if sel == nil {
t.Error("found no *ast.SelectorExpr")
continue
}
const wantSel = "&{fmt _}"
if fmt.Sprint(sel) != wantSel {
t.Errorf("found selector %s, want %s", sel, wantSel)
continue
}
}
}
func loadExportsGoPath(dir string) map[string]bool {
exports := make(map[string]bool)
buildPkg, err := build.ImportDir(dir, 0)
if err != nil {
if strings.Contains(err.Error(), "no buildable Go source files in") {
return nil
}
fmt.Fprintf(os.Stderr, "could not import %q: %v\n", dir, err)
return nil
}
fset := token.NewFileSet()
for _, files := range [...][]string{buildPkg.GoFiles, buildPkg.CgoFiles} {
for _, file := range files {
f, err := parser.ParseFile(fset, filepath.Join(dir, file), nil, 0)
if err != nil {
fmt.Fprintf(os.Stderr, "could not parse %q: %v\n", file, err)
continue
}
for name := range f.Scope.Objects {
if ast.IsExported(name) {
exports[name] = true
}
}
}
}
return exports
}
func TestIssue8518(t *testing.T) {
fset := token.NewFileSet()
imports := make(testImporter)
conf := Config{
Error: func(err error) { t.Log(err) }, // don't exit after first error
Importer: imports,
}
makePkg := func(path, src string) {
f, err := parser.ParseFile(fset, path, src, 0)
if err != nil {
t.Fatal(err)
}
pkg, _ := conf.Check(path, fset, []*ast.File{f}, nil) // errors logged via conf.Error
imports[path] = pkg
}
const libSrc = `
package a
import "missing"
const C1 = foo
const C2 = missing.C
`
const mainSrc = `
package main
import "a"
var _ = a.C1
var _ = a.C2
`
makePkg("a", libSrc)
makePkg("main", mainSrc) // don't crash when type-checking this package
}
func TestFilterDuplicates(t *testing.T) {
// parse input
fset := token.NewFileSet()
file, err := parser.ParseFile(fset, "", input, 0)
if err != nil {
t.Fatal(err)
}
// create package
files := map[string]*ast.File{"": file}
pkg, err := ast.NewPackage(fset, files, nil, nil)
if err != nil {
t.Fatal(err)
}
// filter
merged := ast.MergePackageFiles(pkg, ast.FilterFuncDuplicates)
// pretty-print
var buf bytes.Buffer
if err := format.Node(&buf, fset, merged); err != nil {
t.Fatal(err)
}
output := buf.String()
if output != golden {
t.Errorf("incorrect output:\n%s", output)
}
}
func TestExamples(t *testing.T) {
fset := token.NewFileSet()
file, err := parser.ParseFile(fset, "test.go", strings.NewReader(exampleTestFile), parser.ParseComments)
if err != nil {
t.Fatal(err)
}
for i, e := range doc.Examples(file) {
c := exampleTestCases[i]
if e.Name != c.Name {
t.Errorf("got Name == %q, want %q", e.Name, c.Name)
}
if w := c.Play; w != "" {
var g string // hah
if e.Play == nil {
g = "<nil>"
} else {
var buf bytes.Buffer
if err := format.Node(&buf, fset, e.Play); err != nil {
t.Fatal(err)
}
g = buf.String()
}
if g != w {
t.Errorf("%s: got Play == %q, want %q", c.Name, g, w)
}
}
if g, w := e.Output, c.Output; g != w {
t.Errorf("%s: got Output == %q, want %q", c.Name, g, w)
}
}
}
func TestUnresolved(t *testing.T) {
f, err := ParseFile(token.NewFileSet(), "", `
package p
//
func f1a(int)
func f2a(byte, int, float)
func f3a(a, b int, c float)
func f4a(...complex)
func f5a(a s1a, b ...complex)
//
func f1b(*int)
func f2b([]byte, (int), *float)
func f3b(a, b *int, c []float)
func f4b(...*complex)
func f5b(a s1a, b ...[]complex)
//
type s1a struct { int }
type s2a struct { byte; int; s1a }
type s3a struct { a, b int; c float }
//
type s1b struct { *int }
type s2b struct { byte; int; *float }
type s3b struct { a, b *s3b; c []float }
`, 0)
if err != nil {
t.Fatal(err)
}
want := "int " + // f1a
"byte int float " + // f2a
"int float " + // f3a
"complex " + // f4a
"complex " + // f5a
//
"int " + // f1b
"byte int float " + // f2b
"int float " + // f3b
"complex " + // f4b
"complex " + // f5b
//
"int " + // s1a
"byte int " + // s2a
"int float " + // s3a
//
"int " + // s1a
"byte int float " + // s2a
"float " // s3a
// collect unresolved identifiers
var buf bytes.Buffer
for _, u := range f.Unresolved {
buf.WriteString(u.Name)
buf.WriteByte(' ')
}
got := buf.String()
if got != want {
t.Errorf("\ngot: %s\nwant: %s", got, want)
}
}
func TestLeadAndLineComments(t *testing.T) {
f, err := ParseFile(token.NewFileSet(), "", `
package p
type T struct {
/* F1 lead comment */
//
F1 int /* F1 */ // line comment
// F2 lead
// comment
F2 int // F2 line comment
// f3 lead comment
f3 int // f3 line comment
}
`, ParseComments)
if err != nil {
t.Fatal(err)
}
checkFieldComments(t, f, "T.F1", "/* F1 lead comment *///", "/* F1 */// line comment")
checkFieldComments(t, f, "T.F2", "// F2 lead// comment", "// F2 line comment")
checkFieldComments(t, f, "T.f3", "// f3 lead comment", "// f3 line comment")
ast.FileExports(f)
checkFieldComments(t, f, "T.F1", "/* F1 lead comment *///", "/* F1 */// line comment")
checkFieldComments(t, f, "T.F2", "// F2 lead// comment", "// F2 line comment")
if getField(f, "T.f3") != nil {
t.Error("not expected to find T.f3")
}
}
func ExampleScanner_Scan() {
// src is the input that we want to tokenize.
src := []byte("cos(x) + 1i*sin(x) // Euler")
// Initialize the scanner.
var s scanner.Scanner
fset := token.NewFileSet() // positions are relative to fset
file := fset.AddFile("", fset.Base(), len(src)) // register input "file"
s.Init(file, src, nil /* no error handler */, scanner.ScanComments)
// Repeated calls to Scan yield the token sequence found in the input.
for {
pos, tok, lit := s.Scan()
if tok == token.EOF {
break
}
fmt.Printf("%s\t%s\t%q\n", fset.Position(pos), tok, lit)
}
// output:
// 1:1 IDENT "cos"
// 1:4 ( ""
// 1:5 IDENT "x"
// 1:6 ) ""
// 1:8 + ""
// 1:10 IMAG "1i"
// 1:12 * ""
// 1:13 IDENT "sin"
// 1:16 ( ""
// 1:17 IDENT "x"
// 1:18 ) ""
// 1:20 ; "\n"
// 1:20 COMMENT "// Euler"
}
func TestMultiFileInitOrder(t *testing.T) {
fset := token.NewFileSet()
mustParse := func(src string) *ast.File {
f, err := parser.ParseFile(fset, "main", src, 0)
if err != nil {
t.Fatal(err)
}
return f
}
fileA := mustParse(`package main; var a = 1`)
fileB := mustParse(`package main; var b = 2`)
// The initialization order must not depend on the parse
// order of the files, only on the presentation order to
// the type-checker.
for _, test := range []struct {
files []*ast.File
want string
}{
{[]*ast.File{fileA, fileB}, "[a = 1 b = 2]"},
{[]*ast.File{fileB, fileA}, "[b = 2 a = 1]"},
} {
var info Info
if _, err := new(Config).Check("main", fset, test.files, &info); err != nil {
t.Fatal(err)
}
if got := fmt.Sprint(info.InitOrder); got != test.want {
t.Fatalf("got %s; want %s", got, test.want)
}
}
}
func TestParse(t *testing.T) {
for _, filename := range validFiles {
_, err := ParseFile(token.NewFileSet(), filename, nil, DeclarationErrors)
if err != nil {
t.Fatalf("ParseFile(%s): %v", filename, err)
}
}
}
func BenchmarkParse(b *testing.B) {
b.SetBytes(int64(len(src)))
for i := 0; i < b.N; i++ {
if _, err := ParseFile(token.NewFileSet(), "", src, ParseComments); err != nil {
b.Fatalf("benchmark failed due to parse error: %s", err)
}
}
}
// This example illustrates how to remove a variable declaration
// in a Go program while maintaining correct comment association
// using an ast.CommentMap.
func ExampleCommentMap() {
// src is the input for which we create the AST that we
// are going to manipulate.
src := `
// This is the package comment.
package main
// This comment is associated with the hello constant.
const hello = "Hello, World!" // line comment 1
// This comment is associated with the foo variable.
var foo = hello // line comment 2
// This comment is associated with the main function.
func main() {
fmt.Println(hello) // line comment 3
}
`
// Create the AST by parsing src.
fset := token.NewFileSet() // positions are relative to fset
f, err := parser.ParseFile(fset, "src.go", src, parser.ParseComments)
if err != nil {
panic(err)
}
// Create an ast.CommentMap from the ast.File's comments.
// This helps keeping the association between comments
// and AST nodes.
cmap := ast.NewCommentMap(fset, f, f.Comments)
// Remove the first variable declaration from the list of declarations.
f.Decls = removeFirstVarDecl(f.Decls)
// Use the comment map to filter comments that don't belong anymore
// (the comments associated with the variable declaration), and create
// the new comments list.
f.Comments = cmap.Filter(f).Comments()
// Print the modified AST.
var buf bytes.Buffer
if err := format.Node(&buf, fset, f); err != nil {
panic(err)
}
fmt.Printf("%s", buf.Bytes())
// output:
// // This is the package comment.
// package main
//
// // This comment is associated with the hello constant.
// const hello = "Hello, World!" // line comment 1
//
// // This comment is associated with the main function.
// func main() {
// fmt.Println(hello) // line comment 3
// }
}
func makePkg(t *testing.T, src string) (*Package, error) {
fset := token.NewFileSet()
file, err := parser.ParseFile(fset, filename, src, parser.DeclarationErrors)
if err != nil {
return nil, err
}
// use the package name as package path
conf := Config{Importer: importer.Default([]*ast.File{file})}
return conf.Check(file.Name.Name, fset, []*ast.File{file}, nil)
}
func pkgFor(path, source string, info *Info) (*Package, error) {
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, path, source, 0)
if err != nil {
return nil, err
}
conf := Config{Importer: importer.Default([]*ast.File{f}), AllowUseUninitializedVars: true, AllowUninitializedExprs: true}
return conf.Check(f.Name.Name, fset, []*ast.File{f}, info)
}
func parseFunc(filename, functionname string) (fun *ast.FuncDecl, fset *token.FileSet) {
fset = token.NewFileSet()
if file, err := parser.ParseFile(fset, filename, nil, 0); err == nil {
for _, d := range file.Decls {
if f, ok := d.(*ast.FuncDecl); ok && f.Name.Name == functionname {
fun = f
return
}
}
}
panic("function not found")
}
func TestImports(t *testing.T) {
for path, isValid := range imports {
src := fmt.Sprintf("package p; import %s", path)
_, err := ParseFile(token.NewFileSet(), "", src, 0)
switch {
case err != nil && isValid:
t.Errorf("ParseFile(%s): got %v; expected no error", src, err)
case err == nil && !isValid:
t.Errorf("ParseFile(%s): got no error; expected one", src)
}
}
}
// Source formats src in canonical gofmt style and returns the result
// or an (I/O or syntax) error. src is expected to be a syntactically
// correct Go source file, or a list of Go declarations or statements.
//
// If src is a partial source file, the leading and trailing space of src
// is applied to the result (such that it has the same leading and trailing
// space as src), and the result is indented by the same amount as the first
// line of src containing code. Imports are not sorted for partial source files.
//
func Source(src []byte) ([]byte, error) {
fset := token.NewFileSet()
file, sourceAdj, indentAdj, err := parse(fset, "", src, true)
if err != nil {
return nil, err
}
if sourceAdj == nil {
// Complete source file.
// TODO(gri) consider doing this always.
ast.SortImports(fset, file)
}
return format(fset, file, sourceAdj, indentAdj, src, config)
}
func main() {
flag.Parse()
fset := token.NewFileSet()
nheadings := 0
err := filepath.Walk(*root, func(path string, fi os.FileInfo, err error) error {
if !fi.IsDir() {
return nil
}
pkgs, err := parser.ParseDir(fset, path, isGoFile, parser.ParseComments)
if err != nil {
if *verbose {
fmt.Fprintln(os.Stderr, err)
}
return nil
}
for _, pkg := range pkgs {
d := doc.New(pkg, path, doc.Mode(0))
list := appendHeadings(nil, d.Doc)
for _, d := range d.Consts {
list = appendHeadings(list, d.Doc)
}
for _, d := range d.Types {
list = appendHeadings(list, d.Doc)
}
for _, d := range d.Vars {
list = appendHeadings(list, d.Doc)
}
for _, d := range d.Funcs {
list = appendHeadings(list, d.Doc)
}
if len(list) > 0 {
// directories may contain multiple packages;
// print path and package name
fmt.Printf("%s (package %s)\n", path, pkg.Name)
for _, h := range list {
fmt.Printf("\t%s\n", h)
}
nheadings += len(list)
}
}
return nil
})
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
fmt.Println(nheadings, "headings found")
}
func BenchmarkScan(b *testing.B) {
b.StopTimer()
fset := token.NewFileSet()
file := fset.AddFile("", fset.Base(), len(source))
var s Scanner
b.StartTimer()
for i := 0; i < b.N; i++ {
s.Init(file, source, nil, ScanComments)
for {
_, tok, _ := s.Scan()
if tok == token.EOF {
break
}
}
}
}
func TestEvalArith(t *testing.T) {
var tests = []string{
`true`,
`false == false`,
`12345678 + 87654321 == 99999999`,
`10 * 20 == 200`,
`(1<<1000)*2 >> 100 == 2<<900`,
`"foo" + "bar" == "foobar"`,
`"abc" <= "bcd"`,
`len([10]struct{}{}) == 2*5`,
}
fset := token.NewFileSet()
for _, test := range tests {
testEval(t, fset, nil, token.NoPos, test, Typ[UntypedBool], "", "true")
}
}
func TestCommentGroups(t *testing.T) {
f, err := ParseFile(token.NewFileSet(), "", `
package p /* 1a */ /* 1b */ /* 1c */ // 1d
/* 2a
*/
// 2b
const pi = 3.1415
/* 3a */ // 3b
/* 3c */ const e = 2.7182
// Example from issue 3139
func ExampleCount() {
fmt.Println(strings.Count("cheese", "e"))
fmt.Println(strings.Count("five", "")) // before & after each rune
// Output:
// 3
// 5
}
`, ParseComments)
if err != nil {
t.Fatal(err)
}
expected := [][]string{
{"/* 1a */", "/* 1b */", "/* 1c */", "// 1d"},
{"/* 2a\n*/", "// 2b"},
{"/* 3a */", "// 3b", "/* 3c */"},
{"// Example from issue 3139"},
{"// before & after each rune"},
{"// Output:", "// 3", "// 5"},
}
if len(f.Comments) != len(expected) {
t.Fatalf("got %d comment groups; expected %d", len(f.Comments), len(expected))
}
for i, exp := range expected {
got := f.Comments[i].List
if len(got) != len(exp) {
t.Errorf("got %d comments in group %d; expected %d", len(got), i, len(exp))
continue
}
for j, exp := range exp {
got := got[j].Text
if got != exp {
t.Errorf("got %q in group %d; expected %q", got, i, exp)
}
}
}
}
func testFile(t *testing.T, b1, b2 *bytes.Buffer, filename string) {
// open file
f, err := os.Open(filename)
if err != nil {
t.Error(err)
return
}
// read file
b1.Reset()
_, err = io.Copy(b1, f)
f.Close()
if err != nil {
t.Error(err)
return
}
// exclude files w/ syntax errors (typically test cases)
fset := token.NewFileSet()
if _, _, _, err = parse(fset, filename, b1.Bytes(), false); err != nil {
if *verbose {
fmt.Fprintf(os.Stderr, "ignoring %s\n", err)
}
return
}
// gofmt file
if err = gofmt(fset, filename, b1); err != nil {
t.Errorf("1st gofmt failed: %v", err)
return
}
// make a copy of the result
b2.Reset()
b2.Write(b1.Bytes())
// gofmt result again
if err = gofmt(fset, filename, b2); err != nil {
t.Errorf("2nd gofmt failed: %v", err)
return
}
// the first and 2nd result should be identical
if !bytes.Equal(b1.Bytes(), b2.Bytes()) {
t.Errorf("gofmt %s not idempotent", filename)
}
}
func TestObjects(t *testing.T) {
const src = `
package p
import fmt "fmt"
const pi = 3.14
type T struct{}
var x int
func f() { L: }
`
f, err := ParseFile(token.NewFileSet(), "", src, 0)
if err != nil {
t.Fatal(err)
}
objects := map[string]ast.ObjKind{
"p": ast.Bad, // not in a scope
"fmt": ast.Bad, // not resolved yet
"pi": ast.Con,
"T": ast.Typ,
"x": ast.Var,
"int": ast.Bad, // not resolved yet
"f": ast.Fun,
"L": ast.Lbl,
}
ast.Inspect(f, func(n ast.Node) bool {
if ident, ok := n.(*ast.Ident); ok {
obj := ident.Obj
if obj == nil {
if objects[ident.Name] != ast.Bad {
t.Errorf("no object for %s", ident.Name)
}
return true
}
if obj.Name != ident.Name {
t.Errorf("names don't match: obj.Name = %s, ident.Name = %s", obj.Name, ident.Name)
}
kind := objects[ident.Name]
if obj.Kind != kind {
t.Errorf("%s: obj.Kind = %s; want %s", ident.Name, obj.Kind, kind)
}
}
return true
})
}
// TestIssue9979 verifies that empty statements are contained within their enclosing blocks.
func TestIssue9979(t *testing.T) {
for _, src := range []string{
"package p; func f() {;}",
"package p; func f() {L:}",
"package p; func f() {L:;}",
"package p; func f() {L:\n}",
"package p; func f() {L:\n;}",
"package p; func f() { ; }",
"package p; func f() { L: }",
"package p; func f() { L: ; }",
"package p; func f() { L: \n}",
"package p; func f() { L: \n; }",
} {
fset := token.NewFileSet()
f, err := ParseFile(fset, "", src, 0)
if err != nil {
t.Fatal(err)
}
var pos, end token.Pos
ast.Inspect(f, func(x ast.Node) bool {
switch s := x.(type) {
case *ast.BlockStmt:
pos, end = s.Pos()+1, s.End()-1 // exclude "{", "}"
case *ast.LabeledStmt:
pos, end = s.Pos()+2, s.End() // exclude "L:"
case *ast.EmptyStmt:
// check containment
if s.Pos() < pos || s.End() > end {
t.Errorf("%s: %T[%d, %d] not inside [%d, %d]", src, s, s.Pos(), s.End(), pos, end)
}
// check semicolon
offs := fset.Position(s.Pos()).Offset
if ch := src[offs]; ch != ';' != s.Implicit {
want := "want ';'"
if s.Implicit {
want = "but ';' is implicit"
}
t.Errorf("%s: found %q at offset %d; %s", src, ch, offs, want)
}
}
return true
})
}
}
// ExampleMethodSet prints the method sets of various types.
func ExampleMethodSet() {
// Parse a single source file.
const input = `
package temperature
import "fmt"
type Celsius float64
func (c Celsius) String() string { return fmt.Sprintf("%g°C", c) }
func (c *Celsius) SetF(f float64) { *c = Celsius(f - 32 / 9 * 5) }
`
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "celsius.go", input, 0)
if err != nil {
log.Fatal(err)
}
// Type-check a package consisting of this file.
// Type information for the imported packages
// comes from $GOROOT/pkg/$GOOS_$GOOARCH/fmt.a.
conf := types.Config{Importer: importer.Default([]*ast.File{f})}
pkg, err := conf.Check("temperature", fset, []*ast.File{f}, nil)
if err != nil {
log.Fatal(err)
}
// Print the method sets of Celsius and *Celsius.
celsius := pkg.Scope().Lookup("Celsius").Type()
for _, t := range []types.Type{celsius, types.NewPointer(celsius)} {
fmt.Printf("Method set of %s:\n", t)
mset := types.NewMethodSet(t)
for i := 0; i < mset.Len(); i++ {
fmt.Println(mset.At(i))
}
fmt.Println()
}
// Output:
// Method set of temperature.Celsius:
// method (temperature.Celsius) String() string
//
// Method set of *temperature.Celsius:
// method (*temperature.Celsius) SetF(f float64)
// method (*temperature.Celsius) String() string
}
func TestNode(t *testing.T) {
src, err := ioutil.ReadFile(testfile)
if err != nil {
t.Fatal(err)
}
fset := token.NewFileSet()
file, err := parser.ParseFile(fset, testfile, src, parser.ParseComments)
if err != nil {
t.Fatal(err)
}
var buf bytes.Buffer
if err = Node(&buf, fset, file); err != nil {
t.Fatal("Node failed:", err)
}
diff(t, buf.Bytes(), src)
}
func TestImports(t *testing.T) {
fset := token.NewFileSet()
for _, test := range importsTests {
f, err := parser.ParseFile(fset, "test.go", test.in, 0)
if err != nil {
t.Errorf("%s: %v", test.name, err)
continue
}
var got [][]string
for _, group := range Imports(fset, f) {
var b []string
for _, spec := range group {
b = append(b, unquote(spec.Path.Value))
}
got = append(got, b)
}
if !reflect.DeepEqual(got, test.want) {
t.Errorf("Imports(%s)=%v, want %v", test.name, got, test.want)
}
}
}