diff options
Diffstat (limited to 'libgo/go/go/parser/parser_test.go')
-rw-r--r-- | libgo/go/go/parser/parser_test.go | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/libgo/go/go/parser/parser_test.go b/libgo/go/go/parser/parser_test.go new file mode 100644 index 000000000..56bd80ef1 --- /dev/null +++ b/libgo/go/go/parser/parser_test.go @@ -0,0 +1,112 @@ +// Copyright 2009 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 parser + +import ( + "go/token" + "os" + "testing" +) + + +var fset = token.NewFileSet() + +var illegalInputs = []interface{}{ + nil, + 3.14, + []byte(nil), + "foo!", +} + + +func TestParseIllegalInputs(t *testing.T) { + for _, src := range illegalInputs { + _, err := ParseFile(fset, "", src, 0) + if err == nil { + t.Errorf("ParseFile(%v) should have failed", src) + } + } +} + + +var validPrograms = []interface{}{ + "package main\n", + `package main;`, + `package main; import "fmt"; func main() { fmt.Println("Hello, World!") };`, + `package main; func main() { if f(T{}) {} };`, + `package main; func main() { _ = (<-chan int)(x) };`, + `package main; func main() { _ = (<-chan <-chan int)(x) };`, + `package main; func f(func() func() func());`, + `package main; func f(...T);`, + `package main; func f(float, ...int);`, + `package main; func f(x int, a ...int) { f(0, a...); f(1, a...,) };`, + `package main; type T []int; var a []bool; func f() { if a[T{42}[0]] {} };`, + `package main; type T []int; func g(int) bool { return true }; func f() { if g(T{42}[0]) {} };`, + `package main; type T []int; func f() { for _ = range []int{T{42}[0]} {} };`, + `package main; var a = T{{1, 2}, {3, 4}}`, +} + + +func TestParseValidPrograms(t *testing.T) { + for _, src := range validPrograms { + _, err := ParseFile(fset, "", src, 0) + if err != nil { + t.Errorf("ParseFile(%q): %v", src, err) + } + } +} + + +var validFiles = []string{ + "parser.go", + "parser_test.go", +} + + +func TestParse3(t *testing.T) { + for _, filename := range validFiles { + _, err := ParseFile(fset, filename, nil, 0) + if err != nil { + t.Errorf("ParseFile(%s): %v", filename, err) + } + } +} + + +func nameFilter(filename string) bool { + switch filename { + case "parser.go": + case "interface.go": + case "parser_test.go": + default: + return false + } + return true +} + + +func dirFilter(f *os.FileInfo) bool { return nameFilter(f.Name) } + + +func TestParse4(t *testing.T) { + path := "." + pkgs, err := ParseDir(fset, path, dirFilter, 0) + if err != nil { + t.Fatalf("ParseDir(%s): %v", path, err) + } + if len(pkgs) != 1 { + t.Errorf("incorrect number of packages: %d", len(pkgs)) + } + pkg := pkgs["parser"] + if pkg == nil { + t.Errorf(`package "parser" not found`) + return + } + for filename := range pkg.Files { + if !nameFilter(filename) { + t.Errorf("unexpected package file: %s", filename) + } + } +} |