fixup! fixup! Add Docker usage instructions to README

internal/server/handlers_edit_test.go

@@ -0,0 +1,47 @@
+package server
+
+import "testing"
+
+func TestUnescapeNewlines(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "no escapes",
+			input:    "func test() {\n\treturn true;\n}",
+			expected: "func test() {\n\treturn true;\n}",
+		},
+		{
+			name:     "literal backslash n",
+			input:    "func test() {\\n\\treturn true;\\n}",
+			expected: "func test() {\n\treturn true;\n}",
+		},
+		{
+			name:     "literal backslash t",
+			input:    "func test() {\\n\\treturn true;\\n}",
+			expected: "func test() {\n\treturn true;\n}",
+		},
+		{
+			name:     "literal quotes",
+			input:    `func test() {\n\treturn \"true\";\n}`,
+			expected: "func test() {\n\treturn \"true\";\n}",
+		},
+
+		{
+			name:     "mixed content",
+			input:    "line1\\nline2\\tindented\\nline3",
+			expected: "line1\nline2\tindented\nline3",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := unescapeNewlines(tt.input)
+			if result != tt.expected {
+				t.Errorf("unescapeNewlines(%q) = %q, expected %q", tt.input, result, tt.expected)
+			}
+		})
+	}
+}