ast_test.go

Documentation: go/ast

		 1  // Copyright 2012 The Go Authors. All rights reserved.
		 2  // Use of this source code is governed by a BSD-style
		 3  // license that can be found in the LICENSE file.
		 4  
		 5  package ast
		 6  
		 7  import (
		 8  	"testing"
		 9  )
		10  
		11  var comments = []struct {
		12  	list []string
		13  	text string
		14  }{
		15  	{[]string{"//"}, ""},
		16  	{[]string{"//	 "}, ""},
		17  	{[]string{"//", "//", "//	 "}, ""},
		18  	{[]string{"// foo	 "}, "foo\n"},
		19  	{[]string{"//", "//", "// foo"}, "foo\n"},
		20  	{[]string{"// foo	bar	"}, "foo	bar\n"},
		21  	{[]string{"// foo", "// bar"}, "foo\nbar\n"},
		22  	{[]string{"// foo", "//", "//", "//", "// bar"}, "foo\n\nbar\n"},
		23  	{[]string{"// foo", "/* bar */"}, "foo\n bar\n"},
		24  	{[]string{"//", "//", "//", "// foo", "//", "//", "//"}, "foo\n"},
		25  
		26  	{[]string{"/**/"}, ""},
		27  	{[]string{"/*	 */"}, ""},
		28  	{[]string{"/**/", "/**/", "/*	 */"}, ""},
		29  	{[]string{"/* Foo	 */"}, " Foo\n"},
		30  	{[]string{"/* Foo	Bar	*/"}, " Foo	Bar\n"},
		31  	{[]string{"/* Foo*/", "/* Bar*/"}, " Foo\n Bar\n"},
		32  	{[]string{"/* Foo*/", "/**/", "/**/", "/**/", "// Bar"}, " Foo\n\nBar\n"},
		33  	{[]string{"/* Foo*/", "/*\n*/", "//", "/*\n*/", "// Bar"}, " Foo\n\nBar\n"},
		34  	{[]string{"/* Foo*/", "// Bar"}, " Foo\nBar\n"},
		35  	{[]string{"/* Foo\n Bar*/"}, " Foo\n Bar\n"},
		36  
		37  	{[]string{"// foo", "//go:noinline", "// bar", "//:baz"}, "foo\nbar\n:baz\n"},
		38  	{[]string{"// foo", "//lint123:ignore", "// bar"}, "foo\nbar\n"},
		39  }
		40  
		41  func TestCommentText(t *testing.T) {
		42  	for i, c := range comments {
		43  		list := make([]*Comment, len(c.list))
		44  		for i, s := range c.list {
		45  			list[i] = &Comment{Text: s}
		46  		}
		47  
		48  		text := (&CommentGroup{list}).Text()
		49  		if text != c.text {
		50  			t.Errorf("case %d: got %q; expected %q", i, text, c.text)
		51  		}
		52  	}
		53  }
		54  
		55  var isDirectiveTests = []struct {
		56  	in string
		57  	ok bool
		58  }{
		59  	{"abc", false},
		60  	{"go:inline", true},
		61  	{"Go:inline", false},
		62  	{"go:Inline", false},
		63  	{":inline", false},
		64  	{"lint:ignore", true},
		65  	{"lint:1234", true},
		66  	{"1234:lint", true},
		67  	{"go: inline", false},
		68  	{"go:", false},
		69  	{"go:*", false},
		70  	{"go:x*", true},
		71  }
		72  
		73  func TestIsDirective(t *testing.T) {
		74  	for _, tt := range isDirectiveTests {
		75  		if ok := isDirective(tt.in); ok != tt.ok {
		76  			t.Errorf("isDirective(%q) = %v, want %v", tt.in, ok, tt.ok)
		77  		}
		78  	}
		79  }
		80
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