test(yaml): improve coverage for nil Type (#5525)

tests(yaml): improve coverage for nil `Type`
denoland · Jul 23, 2024 · 044fc27 · 044fc27
1 parent d6dde6f
commit 044fc27
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Showing 2 changed files with 16 additions and 3 deletions.
diff --git a/yaml/_type/nil.ts b/yaml/_type/nil.ts
@@ -29,9 +29,6 @@ export const nil: Type<"scalar", null> = {
   kind: "scalar",
   predicate: isNull,
   represent: {
-    canonical(): string {
-      return "~";
-    },
     lowercase(): string {
       return "null";
     },

diff --git a/yaml/stringify_test.ts b/yaml/stringify_test.ts
@@ -504,3 +504,19 @@ skills:
 `,
   );
 });
+
+Deno.test("stringify() handles nil", () => {
+  assertEquals(stringify(null), "null\n");
+  assertEquals(
+    stringify(null, { styles: { "tag:yaml.org,2002:null": "lowercase" } }),
+    "null\n",
+  );
+  assertEquals(
+    stringify(null, { styles: { "tag:yaml.org,2002:null": "uppercase" } }),
+    "NULL\n",
+  );
+  assertEquals(
+    stringify(null, { styles: { "tag:yaml.org,2002:null": "camelcase" } }),
+    "Null\n",
+  );
+});