@Test
public void testGetMergedConfig_with2LevelsParent() {
TestConfigurable l0 = new TestConfigurable();
{
Map<String, Object> config = new HashMap<>();
config.put(PROP_0, 0);
l0.setConfig(config);
}
TestConfigurable l1 = new TestConfigurable();
l1.setParent(l0);
{
Map<String, Object> config = new HashMap<>();
config.put(PROP_1, 1);
config.put(PROP_2, 2);
l1.setConfig(config);
}
TestConfigurable l2 = new TestConfigurable();
l2.setParent(l1);
{
Map<String, Object> config = new HashMap<>();
config.put(PROP_1, 3);
l2.setConfig(config);
}
Map<String, Object> mergedConfig = l2.getKafkaConfig();
assertThat(mergedConfig.get(PROP_0), equalTo(0));
assertThat(mergedConfig.get(PROP_1), equalTo(3)); // overrides the same value in the parent
assertThat(mergedConfig.get(PROP_2), equalTo(2));
}
@Test
public void testGetMergedConfig_noParent() {
TestConfigurable child = new TestConfigurable();
{
Map<String, Object> config = new HashMap<>();
config.put(PROP_1, 1);
child.setConfig(config);
}
Map<String, Object> mergedConfig = child.getKafkaConfig();
assertThat(mergedConfig.get(PROP_1), equalTo(1));
assertThat(mergedConfig.get(PROP_2), nullValue());
}