feat: implement gomark parsers

plugin/gomark/parser/horizontal_rule_test.go

@@ -0,0 +1,49 @@
+package parser
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/usememos/memos/plugin/gomark/ast"
+	"github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+)
+
+func TestHorizontalRuleParser(t *testing.T) {
+	tests := []struct {
+		text           string
+		horizontalRule ast.Node
+	}{
+		{
+			text: "---",
+			horizontalRule: &ast.HorizontalRule{
+				Symbol: "-",
+			},
+		},
+		{
+			text:           "****",
+			horizontalRule: nil,
+		},
+		{
+			text: "***",
+			horizontalRule: &ast.HorizontalRule{
+				Symbol: "*",
+			},
+		},
+		{
+			text:           "-*-",
+			horizontalRule: nil,
+		},
+		{
+			text: "___",
+			horizontalRule: &ast.HorizontalRule{
+				Symbol: "_",
+			},
+		},
+	}
+
+	for _, test := range tests {
+		tokens := tokenizer.Tokenize(test.text)
+		require.Equal(t, test.horizontalRule, NewHorizontalRuleParser().Parse(tokens))
+	}
+}