@@ -0,0 +1,79 @@
+package filepath
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/yuin/goldmark"
+)
+
+func TestFilePathExtension(t *testing.T) {
+	markdown := goldmark.New(
+		goldmark.WithExtensions(
+			New(),
+		),
+	)
+
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "basic file path reference",
+			input:    "{file}`/etc/passwd`",
+			expected: "<p><span class=\"file-path\">/etc/passwd</span></p>\n",
+		},
+		{
+			name:  "file path reference in sentence",
+			input: "The configuration file {file}`/etc/fstab` contains file system information.",
+			expected: "<p>The configuration file <span class=\"file-path\">/etc/fstab</span>" +
+				" contains file system information.</p>\n",
+		},
+		{
+			name:  "multiple file path references",
+			input: "Both {file}`/etc/hosts` and {file}`/etc/resolv.conf` define DNS settings.",
+			expected: "<p>Both <span class=\"file-path\">/etc/hosts</span> and <span class=\"file-path\">" +
+				"/etc/resolv.conf</span> define DNS settings.</p>\n",
+		},
+		{
+			name:     "incomplete file path reference - no closing backtick",
+			input:    "{file}`/missing/backtick",
+			expected: "<p>{file}`/missing/backtick</p>\n",
+		},
+		{
+			name:     "incomplete file path reference - empty path",
+			input:    "{file}``",
+			expected: "<p>{file}``</p>\n",
+		},
+		{
+			name:  "file path reference with code block",
+			input: "Edit {file}`~/.bashrc` using your favorite `text editor`.",
+			expected: "<p>Edit <span class=\"file-path\">~/.bashrc</span> " +
+				"using your favorite <code>text editor</code>.</p>\n",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			var buf bytes.Buffer
+			if err := markdown.Convert([]byte(test.input), &buf); err != nil {
+				t.Fatalf("Failed to convert markdown: %v", err)
+			}
+
+			if got := buf.String(); got != test.expected {
+				t.Errorf("Expected:\n%q\nGot:\n%q", test.expected, got)
+			}
+		})
+	}
+}
+
+func TestFilePathNodeKind(t *testing.T) {
+	n := &Node{}
+	if kind := n.Kind(); kind != KindFilePath {
+		t.Errorf("Expected node kind %v, got %v", KindFilePath, kind)
+	}
+	if !n.Inline() {
+		t.Error("Expected node to be inline")
+	}
+}