Add an extra test for diff-to-document

codecrafters-io · Oct 6, 2024 · 09577a5 · 09577a5
1 parent 2b7a8b7
commit 09577a5
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/app/helpers/diff-to-document.ts b/app/helpers/diff-to-document.ts
@@ -1,6 +1,6 @@
 import { helper } from '@ember/component/helper';
 
-const diffToDocument = helper(function diffToDocument([diff = '']: [string]) {
+const diffToDocument = helper(function diffToDocument([diff = '']: [string | undefined]) {
   const diffLines = diff.split('\n');
 
   const current = [];

diff --git a/tests/integration/helpers/diff-to-document-test.ts b/tests/integration/helpers/diff-to-document-test.ts
@@ -17,4 +17,16 @@ module('Integration | Helper | diff-to-document', function (hooks) {
     assert.dom('[data-test-current-document]').hasText(/^1234\n2345\n6789\n$/);
     assert.dom('[data-test-original-document]').hasText(/^1234\n6789\n0123\n$/);
   });
+
+  test('it does not break if passed an undefined diff', async function (assert) {
+    await render(hbs`
+      {{#let (diff-to-document undefined) as |doc|}}
+        <pre data-test-current-document>{{doc.current}}</pre>
+        <pre data-test-original-document>{{doc.original}}</pre>
+      {{/let}}
+    `);
+
+    assert.dom('[data-test-current-document]').hasText(/^$/);
+    assert.dom('[data-test-original-document]').hasText(/^$/);
+  });
 });