Add an additonal test for deeper keys

jestjs · Feb 20, 2019 · 04ebef5 · 04ebef5
1 parent d2f5228
commit 04ebef5
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/packages/expect/src/__tests__/matchers.test.js b/packages/expect/src/__tests__/matchers.test.js
@@ -285,6 +285,10 @@ describe('.toStrictEqual()', () => {
     expect([{a: undefined}]).not.toStrictEqual([{}]);
   });
 
+  it('does not ignore keys with undefined values deep inside an object', () => {
+    expect([{a: [{a: undefined}]}]).not.toStrictEqual([{a: [{}]}]);
+  });
+
   it('passes when comparing same type', () => {
     expect({
       test: new TestClassA(1, 2),