@Test(expected = InvalidSettingException.class)
public void shouldNotAllowSettingInvalidValues() {
Config config = new Config(new HashMap<String, String>(), MySettingsWithDefaults.class);
Map<String, String> params = config.getParams();
params.put(MySettingsWithDefaults.boolSetting.name(), "asd");
config.applyChanges(params);
fail("Expected validation to fail.");
}
@Test
public void shouldNotNotifyChangeListenerWhenNothingChanged() {
// Given
Config config = new Config(stringMap("setting", "old"), MyMigratingSettings.class);
ChangeCaptureListener listener = new ChangeCaptureListener();
config.addConfigurationChangeListener(listener);
// When
config.applyChanges(stringMap("setting", "old")); // nothing really changed here
// Then
assertThat(listener.lastChangeSet, nullValue());
}
@Test
public void shouldNotifyChangeListenersWhenNewSettingsAreApplied() {
// Given
Config config = new Config(stringMap("setting", "old"), MyMigratingSettings.class);
ChangeCaptureListener listener = new ChangeCaptureListener();
config.addConfigurationChangeListener(listener);
// When
config.applyChanges(stringMap("setting", "new"));
// Then
assertThat(listener.lastChangeSet, is(setOf(new ConfigurationChange("setting", "old", "new"))));
}