// Copyright 2010 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 html import ( "bytes" "testing" ) func TestRenderer(t *testing.T) { nodes := [...]*Node{ 0: { Type: ElementNode, Data: "html", }, 1: { Type: ElementNode, Data: "head", }, 2: { Type: ElementNode, Data: "body", }, 3: { Type: TextNode, Data: "0<1", }, 4: { Type: ElementNode, Data: "p", Attr: []Attribute{ { Key: "id", Val: "A", }, { Key: "foo", Val: `abc"def`, }, }, }, 5: { Type: TextNode, Data: "2", }, 6: { Type: ElementNode, Data: "b", Attr: []Attribute{ { Key: "empty", Val: "", }, }, }, 7: { Type: TextNode, Data: "3", }, 8: { Type: ElementNode, Data: "i", Attr: []Attribute{ { Key: "backslash", Val: `\`, }, }, }, 9: { Type: TextNode, Data: "&4", }, 10: { Type: TextNode, Data: "5", }, 11: { Type: ElementNode, Data: "blockquote", }, 12: { Type: ElementNode, Data: "br", }, 13: { Type: TextNode, Data: "6", }, } // Build a tree out of those nodes, based on a textual representation. // Only the ".\t"s are significant. The trailing HTML-like text is // just commentary. The "0:" prefixes are for easy cross-reference with // the nodes array. treeAsText := [...]string{ 0: ``, 1: `. `, 2: `. `, 3: `. . "0<1"`, 4: `. .

`, 5: `. . . "2"`, 6: `. . . `, 7: `. . . . "3"`, 8: `. . . `, 9: `. . . . "&4"`, 10: `. . "5"`, 11: `. .

`, 12: `. .
`, 13: `. . "6"`, } if len(nodes) != len(treeAsText) { t.Fatal("len(nodes) != len(treeAsText)") } var stack [8]*Node for i, line := range treeAsText { level := 0 for line[0] == '.' { // Strip a leading ".\t". line = line[2:] level++ } n := nodes[i] if level == 0 { if stack[0] != nil { t.Fatal("multiple root nodes") } stack[0] = n } else { stack[level-1].AppendChild(n) stack[level] = n for i := level + 1; i < len(stack); i++ { stack[i] = nil } } // At each stage of tree construction, we check all nodes for consistency. for j, m := range nodes { if err := checkNodeConsistency(m); err != nil { t.Fatalf("i=%d, j=%d: %v", i, j, err) } } } want := `0<1
` + `23&4
` + `5

6` b := new(bytes.Buffer) if err := Render(b, nodes[0]); err != nil { t.Fatal(err) } if got := b.String(); got != want { t.Errorf("got vs want:\n%s\n%s\n", got, want) } }