test: add more tests

All tests under c-api directory have been transpiled, except for
user_data related ones.

Author: CoolSpring8

.idea/inspectionProfiles/Project_Default.xml

@@ -1,42 +1 @@
 package lolhtml_test
-
-import (
-	"testing"
-
-	"github.com/coolspring8/go-lolhtml"
-)
-
-func TestRewriterBuilderMemoryLimiting(t *testing.T) {
-	w, err := lolhtml.NewWriter(
-		nil,
-		&lolhtml.Handlers{
-			ElementContentHandler: []lolhtml.ElementContentHandler{
-				{
-					"span",
-					nil,
-					nil,
-					nil,
-				},
-			},
-		},
-		lolhtml.Config{
-			Encoding: "utf-8",
-			Memory: &lolhtml.MemorySettings{
-				PreallocatedParsingBufferSize: 0,
-				MaxAllowedMemoryUsage:         5,
-			},
-			Strict: true,
-		},
-	)
-	if err != nil {
-		t.Error(err)
-	}
-	_, err = w.Write([]byte("<span alt='aaaaa"))
-	if err == nil {
-		t.FailNow()
-	}
-	if err.Error() != "The memory limit has been exceeded." {
-		t.Error(err)
-	}
-	w.Free()
-}

builder_test.go

@@ -28,70 +28,57 @@ func (c *Comment) SetText(text string) error {
 	return getError()
 }
 
-func (c *Comment) InsertBeforeAsText(content string) error {
+type commentAlter int
+
+const (
+	commentInsertBefore commentAlter = iota
+	commentInsertAfter
+	commentReplace
+)
+
+func (c *Comment) alter(content string, alter commentAlter, isHtml bool) error {
 	contentC := C.CString(content)
 	defer C.free(unsafe.Pointer(contentC))
 	contentLen := len(content)
-	errCode := C.lol_html_comment_before((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), false)
+	var errCode C.int
+	switch alter {
+	case commentInsertBefore:
+		errCode = C.lol_html_comment_before((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), C.bool(isHtml))
+	case commentInsertAfter:
+		errCode = C.lol_html_comment_after((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), C.bool(isHtml))
+	case commentReplace:
+		errCode = C.lol_html_comment_replace((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), C.bool(isHtml))
+	default:
+		panic("not implemented")
+	}
 	if errCode == 0 {
 		return nil
 	}
 	return getError()
 }
 
+func (c *Comment) InsertBeforeAsText(content string) error {
+	return c.alter(content, commentInsertAfter, false)
+}
+
 func (c *Comment) InsertBeforeAsHtml(content string) error {
-	contentC := C.CString(content)
-	defer C.free(unsafe.Pointer(contentC))
-	contentLen := len(content)
-	errCode := C.lol_html_comment_before((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), true)
-	if errCode == 0 {
-		return nil
-	}
-	return getError()
+	return c.alter(content, commentInsertBefore, true)
 }
 
 func (c *Comment) InsertAfterAsText(content string) error {
-	contentC := C.CString(content)
-	defer C.free(unsafe.Pointer(contentC))
-	contentLen := len(content)
-	errCode := C.lol_html_comment_after((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), false)
-	if errCode == 0 {
-		return nil
-	}
-	return getError()
+	return c.alter(content, commentInsertAfter, false)
 }
 
 func (c *Comment) InsertAfterAsHtml(content string) error {
-	contentC := C.CString(content)
-	defer C.free(unsafe.Pointer(contentC))
-	contentLen := len(content)
-	errCode := C.lol_html_comment_after((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), true)
-	if errCode == 0 {
-		return nil
-	}
-	return getError()
+	return c.alter(content, commentInsertAfter, true)
 }
 
 func (c *Comment) ReplaceAsText(content string) error {
-	contentC := C.CString(content)
-	defer C.free(unsafe.Pointer(contentC))
-	contentLen := len(content)
-	errCode := C.lol_html_comment_replace((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), false)
-	if errCode == 0 {
-		return nil
-	}
-	return getError()
+	return c.alter(content, commentReplace, false)
 }
 
 func (c *Comment) ReplaceAsHtml(content string) error {
-	contentC := C.CString(content)
-	defer C.free(unsafe.Pointer(contentC))
-	contentLen := len(content)
-	errCode := C.lol_html_comment_replace((*C.lol_html_comment_t)(c), contentC, C.size_t(contentLen), true)
-	if errCode == 0 {
-		return nil
-	}
-	return getError()
+	return c.alter(content, commentReplace, true)
 }
 
 func (c *Comment) Remove() {