public void Watch_CompositeChangeToken_RegisterChangeCallbackCorrectlyTransmitsAllParameters()
{
// Arrange
var firstChangeToken = new MockChangeToken { ActiveChangeCallbacks = true };
var secondChangeToken = new MockChangeToken();
var thirdChangeToken = new MockChangeToken { ActiveChangeCallbacks = true };
var provider = new CompositeFileProvider(
new MockFileProvider(
new KeyValuePair<string, IChangeToken>("pattern", firstChangeToken),
new KeyValuePair<string, IChangeToken>("2ndpattern", secondChangeToken)),
new MockFileProvider(new KeyValuePair<string, IChangeToken>("pattern", thirdChangeToken)));
// Act
var changeToken = provider.Watch("pattern");
// Assert
Assert.NotNull(changeToken);
Assert.True(changeToken.ActiveChangeCallbacks);
Assert.False(changeToken.HasChanged);
// Register callback
Assert.Equal(0, firstChangeToken.Callbacks.Count);
Assert.Equal(0, secondChangeToken.Callbacks.Count);
Assert.Equal(0, thirdChangeToken.Callbacks.Count);
var hasBeenCalled = false;
object result = null;
object state = new object();
changeToken.RegisterChangeCallback(item =>
{
hasBeenCalled = true;
result = item;
}, state);
Assert.Equal(1, firstChangeToken.Callbacks.Count);
Assert.Same(state, firstChangeToken.Callbacks[0].Item2);
Assert.Equal(0, secondChangeToken.Callbacks.Count);
Assert.Equal(1, thirdChangeToken.Callbacks.Count);
Assert.Same(state, thirdChangeToken.Callbacks[0].Item2);
var expectedResult = new object();
firstChangeToken.RaiseCallback(expectedResult);
Assert.True(hasBeenCalled);
Assert.Equal(expectedResult, result);
}
public void Watch_CompositeChangeToken_RegisterChangeCallbackReturnsACompositeDisposable()
{
// Arrange
var firstChangeToken = new MockChangeToken { ActiveChangeCallbacks = true };
var secondChangeToken = new MockChangeToken();
var thirdChangeToken = new MockChangeToken { ActiveChangeCallbacks = false };
var provider = new CompositeFileProvider(
new MockFileProvider(
new KeyValuePair<string, IChangeToken>("pattern", firstChangeToken),
new KeyValuePair<string, IChangeToken>("2ndpattern", secondChangeToken)),
new MockFileProvider(new KeyValuePair<string, IChangeToken>("pattern", thirdChangeToken)));
// Act
var changeToken = provider.Watch("pattern");
// Assert
Assert.NotNull(changeToken);
Assert.True(changeToken.ActiveChangeCallbacks);
Assert.False(changeToken.HasChanged);
// Register callback
Assert.Equal(0, firstChangeToken.Callbacks.Count);
Assert.Equal(0, secondChangeToken.Callbacks.Count);
Assert.Equal(0, thirdChangeToken.Callbacks.Count);
object result = null;
object state = new object();
var disposable = changeToken.RegisterChangeCallback(item =>
{
result = item;
}, state);
Assert.Equal(1, firstChangeToken.Callbacks.Count);
Assert.False(firstChangeToken.Callbacks[0].Item3.Disposed);
Assert.Equal(0, secondChangeToken.Callbacks.Count);
Assert.Equal(1, thirdChangeToken.Callbacks.Count);
Assert.False(thirdChangeToken.Callbacks[0].Item3.Disposed);
disposable.Dispose();
Assert.Equal(1, firstChangeToken.Callbacks.Count);
Assert.True(firstChangeToken.Callbacks[0].Item3.Disposed);
Assert.Equal(0, secondChangeToken.Callbacks.Count);
Assert.Equal(1, thirdChangeToken.Callbacks.Count);
Assert.True(thirdChangeToken.Callbacks[0].Item3.Disposed);
}
public void Watch_CompositeChangeToken_HasChangedIsCorrectlyComputed()
{
// Arrange
var firstChangeToken = new MockChangeToken();
var secondChangeToken = new MockChangeToken();
var thirdChangeToken = new MockChangeToken();
var provider = new CompositeFileProvider(
new MockFileProvider(
new KeyValuePair<string, IChangeToken>("pattern", firstChangeToken),
new KeyValuePair<string, IChangeToken>("2ndpattern", secondChangeToken)),
new MockFileProvider(new KeyValuePair<string, IChangeToken>("pattern", thirdChangeToken)));
// Act
var changeToken = provider.Watch("pattern");
// Assert
Assert.NotNull(changeToken);
Assert.False(changeToken.ActiveChangeCallbacks);
Assert.False(changeToken.HasChanged);
// HasChanged update
// first change token
firstChangeToken.HasChanged = true;
Assert.True(changeToken.HasChanged);
firstChangeToken.HasChanged = false;
// second change token
secondChangeToken.HasChanged = true;
Assert.False(changeToken.HasChanged);
secondChangeToken.HasChanged = false;
// third change token
thirdChangeToken.HasChanged = true;
Assert.True(changeToken.HasChanged);
}