feat: image and link parser (#1744)

* feat: image and link parser

* chore: update

plugin/gomark/parser/image_test.go

@@ -0,0 +1,42 @@
+package parser
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/usememos/memos/plugin/gomark/parser/tokenizer"
+)
+
+func TestImageParser(t *testing.T) {
+	tests := []struct {
+		text  string
+		image *ImageParser
+	}{
+		{
+			text: "![](https://example.com)",
+			image: &ImageParser{
+				AltText: "",
+				URL:     "https://example.com",
+			},
+		},
+		{
+			text:  "! [](https://example.com)",
+			image: nil,
+		},
+		{
+			text:  "![alte]( htt ps :/ /example.com)",
+			image: nil,
+		},
+		{
+			text: "![al te](https://example.com)",
+			image: &ImageParser{
+				AltText: "al te",
+				URL:     "https://example.com",
+			},
+		},
+	}
+	for _, test := range tests {
+		tokens := tokenizer.Tokenize(test.text)
+		require.Equal(t, test.image, NewImageParser().Match(tokens))
+	}
+}