RealmObjectSchemaTests.java 文件源码

@Test
public void setRequired_true_onPrimaryKeyField_containsNullValues_shouldThrow() {
    if (type == ObjectSchemaType.IMMUTABLE) {
        return;
    }
    for (PrimaryKeyFieldType fieldType : PrimaryKeyFieldType.values()) {
        String className = fieldType.getType().getSimpleName() + "Class";
        String fieldName = "primaryKey";
        schema = realmSchema.create(className);
        if (!fieldType.isNullable()) {
            continue;
        }
        schema.addField(fieldName, fieldType.getType(), FieldAttribute.PRIMARY_KEY);
        DynamicRealmObject object = ((DynamicRealm)realm).createObject(schema.getClassName(), null);
        assertTrue(object.isNull(fieldName));
        try {
            schema.setRequired(fieldName, true);
            fail();
        } catch (IllegalStateException expected) {
            assertThat(expected.getMessage(),
                    CoreMatchers.containsString("The primary key field 'primaryKey' has 'null' values stored."));
        }
        realmSchema.remove(className);
    }
}