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|
package parser
import (
"bytes"
"strings"
"testing"
"github.com/gomarkdown/markdown/ast"
)
type CustomNode struct {
ast.Container
}
// we default to true so to test it, we need to test false
func (n *CustomNode) CanContain(ast.Node) bool {
return false
}
type CustomNode2 struct {
ast.Container
}
func blockTitleHook(data []byte) (ast.Node, []byte, int) {
sep := []byte(`%%%`)
// parse text between %%% and %%% and return it as a blockQuote.
if !bytes.HasPrefix(data, sep) {
return nil, data, 0
}
end := bytes.Index(data[3:], sep)
if end < 0 {
return nil, data, 0
}
end += 3
node := &CustomNode{}
return node, data[4:end], end + 3
}
func blockTitleHook2(data []byte) (ast.Node, []byte, int) {
sep := []byte(`%%%`)
// parse text between %%% and %%% and return it as a blockQuote.
if !bytes.HasPrefix(data, sep) {
return nil, data, 0
}
end := bytes.Index(data[3:], sep)
if end < 0 {
return nil, data, 0
}
end += 3
node := &CustomNode2{}
return node, data[4:end], end + 3
}
func astPrint(root ast.Node) string {
buf := &bytes.Buffer{}
ast.Print(buf, root)
return buf.String()
}
func astPretty(s string) string {
s = strings.Replace(s, " ", "_", -1)
s = strings.Replace(s, "\t", "__", -1)
s = strings.Replace(s, "\n", "+", -1)
return s
}
func TestCustomNode(t *testing.T) {
tests := []struct {
data string
want string
}{
{
data: `
%%%
hallo
%%%
`,
want: `CustomNode
Paragraph 'hallo'
`,
},
}
p := New()
p.Opts = Options{ParserHook: blockTitleHook}
for _, test := range tests {
p.Block([]byte(test.data))
data := astPrint(p.Doc)
got := astPretty(data)
want := astPretty(test.want)
if got != want {
t.Errorf("want: %s, got: %s", want, got)
}
}
}
func TestCustomNode2(t *testing.T) {
tests := []struct {
data string
want string
}{
{
data: `
%%%
hallo
%%%
`,
want: `CustomNode2
Paragraph 'hallo'
`,
},
}
p := New()
p.Opts = Options{ParserHook: blockTitleHook2}
for _, test := range tests {
p.Block([]byte(test.data))
data := astPrint(p.Doc)
got := astPretty(data)
want := astPretty(test.want)
if got != want {
t.Errorf("want: %s, got: %s", want, got)
}
}
}
|
