From 2f3689713b07b002c5cb45431de9f312e9fed5a7 Mon Sep 17 00:00:00 2001
From: Matt McCherry <matt.mccherry@gmail.com>
Date: Tue, 10 Dec 2024 11:31:16 +0000
Subject: [PATCH] add tests for falsy values

---
 spec/core/matchers/toBeNullishSpec.js | 38 +++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/spec/core/matchers/toBeNullishSpec.js b/spec/core/matchers/toBeNullishSpec.js
index 29c41fdc..5f70d1a8 100644
--- a/spec/core/matchers/toBeNullishSpec.js
+++ b/spec/core/matchers/toBeNullishSpec.js
@@ -16,4 +16,42 @@ describe('toBeNullish', function() {
     const result = matcher.compare('foo');
     expect(result.pass).toBe(false);
   });
+
+  describe('falsy values', () => {
+    it('fails for 0', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare(0);
+      expect(result.pass).toBe(false);
+    });
+
+    it('fails for -0', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare(-0);
+      expect(result.pass).toBe(false);
+    });
+
+    it('fails for empty string', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare('');
+      expect(result.pass).toBe(false);
+    });
+
+    it('fails for false', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare(false);
+      expect(result.pass).toBe(false);
+    });
+
+    it('fails for NaN', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare(NaN);
+      expect(result.pass).toBe(false);
+    });
+
+    it('fails for 0n', function() {
+      const matcher = jasmineUnderTest.matchers.toBeNullish();
+      const result = matcher.compare(BigInt(0));
+      expect(result.pass).toBe(false);
+    });
+  });
 });