fix: Made test exception text useful

Author: abhijeetshuklaoist

google-cloud-firestore/src/test/java/com/google/cloud/firestore/MapperTest.java

@@ -20,6 +20,7 @@
 import static com.google.cloud.firestore.LocalFirestoreHelper.mapAnyType;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -1236,9 +1237,15 @@ public void primitiveDeserializeLong() {
  }
  }
 
- @Test(expected = RuntimeException.class)
+ @Test
  public void primitiveDeserializeWrongTypeMap() {
- deserialize("{'value': {'foo': 'bar'}}", StringBean.class);
+ String expectedExceptionMessage =
+ ".* Failed to convert value of type .*Map to String \\(found in field 'value'\\).*";
+ Throwable exception =
+ assertThrows(
+ RuntimeException.class,
+ () -> deserialize("{'value': {'foo': 'bar'}}", StringBean.class));
+ assertTrue(exception.getMessage().matches(expectedExceptionMessage));
  }
 
  @Test
@@ -2517,7 +2524,7 @@ public void settersCanOverridePrimitiveSettersParsing() {
  NonConflictingSetterSubBean bean =
  deserialize("{'value': 2}", NonConflictingSetterSubBean.class);
  // sub-bean converts to negative value
- assertEquals(-2, bean.value, 0);
+ assertEquals(-2, bean.value);
  }
 
  @Test