additional test case

BastiaanJansen · Aug 4, 2021 · bcfca82 · bcfca82
1 parent 5f22cee
commit bcfca82
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/test/java/com/bastiaanjansen/otp/TOTPGeneratorTest.java b/src/test/java/com/bastiaanjansen/otp/TOTPGeneratorTest.java
@@ -62,6 +62,14 @@ void verify() {
         assertTrue(generator.verify(generator.generate()));
     }
 
+    @Test
+    void verifyOlderCode() {
+        TOTPGenerator generator = new TOTPGenerator.Builder(secret).build();
+        String code = generator.generate(Instant.now().minusSeconds(30));
+        assertFalse(generator.verify(code));
+        assertTrue(generator.verify(code, 1));
+    }
+
     @Test
     void generateWithPeriodOfZero() {
         assertThrows(IllegalArgumentException.class, () -> {