public void EventsTest()
{
// prepare
var settings = new TestSettings(1, JsonSettingsSerializer.Default);
var settingChangedEventArgs = (SettingChangedEventArgs?)null;
var settingChangingEventArgs = (SettingChangingEventArgs?)null;
settings.SettingChanged += (_, e) => settingChangedEventArgs = e;
settings.SettingChanging += (_, e) => settingChangingEventArgs = e;
// reset value
settings.ResetValue(TestSettings.Int32Key);
Assert.IsNull(settingChangingEventArgs, "Should not receive SettingChanging event.");
Assert.IsNull(settingChangedEventArgs, "Should not receive SettingChanged event.");
// modify value
var testValue = TestSettings.TestValues[TestSettings.Int32Key];
settings.SetValue(TestSettings.Int32Key, testValue);
Assert.IsNotNull(settingChangingEventArgs, "Should receive SettingsChanging event.");
Assert.AreEqual(TestSettings.Int32Key, settingChangingEventArgs?.Key, "Key reported by SettingChanging is incorrect.");
Assert.AreEqual(TestSettings.Int32Key.DefaultValue, settingChangingEventArgs?.Value, "Current value reported by SettingChanging is incorrect.");
Assert.AreEqual(testValue, settingChangingEventArgs?.NewValue, "New value reported by SettingChanging is incorrect.");
Assert.IsNotNull(settingChangedEventArgs, "Should receive SettingChanged event.");
Assert.AreEqual(TestSettings.Int32Key.DefaultValue, settingChangedEventArgs?.PreviousValue, "Previous value reported by SettingChanged is incorrect.");
Assert.AreEqual(testValue, settingChangedEventArgs?.Value, "Current value reported by SettingChanged is incorrect.");
// modify by same value
settingChangingEventArgs = null;
settingChangedEventArgs = null;
settings.SetValue(TestSettings.Int32Key, testValue);
Assert.IsNull(settingChangingEventArgs, "Should not receive SettingChanging event.");
Assert.IsNull(settingChangedEventArgs, "Should not receive SettingChanged event.");
}
