test: update test to include empty string as invalid

streamich · Jan 17, 2020 · aaefdf8 · aaefdf8
1 parent 100b868
commit aaefdf8
Showing 1 changed file with 10 additions and 1 deletion.
diff --git a/tests/useCopyToClipboard.test.ts b/tests/useCopyToClipboard.test.ts
@@ -42,7 +42,7 @@ describe('useCopyToClipboard', () => {
   });
 
   it('should not call writeText if passed an invalid input and set state', () => {
-    const testValue = {}; // invalid value
+    let testValue = {}; // invalid value
     let [state, copyToClipboard] = hook.result.current;
     act(() => copyToClipboard(testValue));
     [state, copyToClipboard] = hook.result.current;
@@ -51,6 +51,15 @@ describe('useCopyToClipboard', () => {
     expect(state.value).toBe(testValue);
     expect(state.noUserInteraction).toBe(true);
     expect(state.error).toBeDefined();
+
+    testValue = ''; // emtpy string is also invalid
+    act(() => copyToClipboard(testValue));
+    [state, copyToClipboard] = hook.result.current;
+    console.log(state);
+    expect(writeText).not.toBeCalled();
+    expect(state.value).toBe(testValue);
+    expect(state.noUserInteraction).toBe(true);
+    expect(state.error).toBeDefined();
   });
 
   it('should catch exception thrown by copy-to-clipboard and set state', () => {