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// 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/ast"
"os"
"testing"
)
var illegalInputs = []interface{}{
nil,
3.14,
[]byte(nil),
"foo!",
}
func TestParseIllegalInputs(t *testing.T) {
for _, src := range illegalInputs {
_, err := ParseFile("", src, nil, 0)
if err == nil {
t.Errorf("ParseFile(%v) should have failed", src)
}
}
}
var validPrograms = []interface{}{
`package main;`,
`package main; import "fmt"; func main() { fmt.Println("Hello, World!") }` + "\n",
`package main; func main() { if f(T{}) {} }` + "\n",
`package main; func main() { _ = (<-chan int)(x) }` + "\n",
`package main; func main() { _ = (<-chan <-chan int)(x) }` + "\n",
`package main; func f(func() func() func())` + "\n",
`package main; func f(...)` + "\n",
`package main; func f(float, ...int)` + "\n",
`package main; type T []int; var a []bool; func f() { if a[T{42}[0]] {} }` + "\n",
`package main; type T []int; func g(int) bool { return true }; func f() { if g(T{42}[0]) {} }` + "\n",
`package main; type T []int; func f() { for _ = range []int{T{42}[0]} {} }` + "\n",
}
func TestParseValidPrograms(t *testing.T) {
for _, src := range validPrograms {
_, err := ParseFile("", src, ast.NewScope(nil), 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(filename, nil, ast.NewScope(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(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)
}
}
}
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