public void ShouldYieldEvaluationResultsInCircle()
{
//GIVEN
Displayable d1 = Substitute.For <Displayable>();
Displayable d2 = Substitute.For <Displayable>();
Displayable d3 = Substitute.For <Displayable>();
var displayable = new CircularDisplayable(d1, d2, d3);
var input = Any.Array <char>();
var d1Result = Any.String();
var d2Result = Any.String();
var d3Result = Any.String();
d1.Evaluate(input).Returns(d1Result);
d2.Evaluate(input).Returns(d2Result);
d3.Evaluate(input).Returns(d3Result);
//WHEN
var result1 = displayable.Evaluate(input);
var result2 = displayable.Evaluate(input);
var result3 = displayable.Evaluate(input);
var result4 = displayable.Evaluate(input);
//THEN
XAssert.Equal(d1Result, result1);
XAssert.Equal(d2Result, result2);
XAssert.Equal(d3Result, result3);
XAssert.Equal(d1Result, result4);
}
public void Build_one_action_and_predicate()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Action <string> action = s => { updatedValue = s; };
Predicate <string> predicate = s => s.Length > 5;
var handler = PredicateAndHandler.CreateAction(action, predicate: predicate);
stringHandler.Handlers.Add(handler);
typeHandlers.Add(stringHandler);
var builder = new MatchExpressionBuilder <object>();
//Build the expression
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(2, result.Arguments.Length, "Should contain the action and predicate delegate");
Assert.Same(action, result.Arguments[0]);
Assert.Same(predicate, result.Arguments[1]);
//Compile the expression and test it
var lambda = (Func <object, Action <String>, Predicate <string>, bool>)result.LambdaExpression.Compile();
lambda("short", action, predicate);
Assert.Null(updatedValue);
lambda("longer value", action, predicate);
Assert.Equal("longer value", updatedValue);
lambda(4711, action, predicate);
Assert.Equal("longer value", updatedValue);
}
public void Build_one_action_that_expects_base_type()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Action <object> action = s => { updatedValue = s is string? "WasString:" + (string)s : "WasNotString" + s.ToString(); };
var handler = PredicateAndHandler.CreateAction(action, handlerFirstArgumentShouldBeBaseType: true);
stringHandler.Handlers.Add(handler);
typeHandlers.Add(stringHandler);
var builder = new MatchExpressionBuilder <object>();
//Build the expression
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(1, result.Arguments.Length, "Should only contain the action delegate");
Assert.Same(action, result.Arguments[0]);
//Compile the expression and test it
var lambda = (Func <object, Action <object>, bool>)result.LambdaExpression.Compile();
lambda(4711, action);
Assert.Equal(null, updatedValue);
lambda("the value", action);
Assert.Equal("WasString:the value", updatedValue);
}
public void Build_one_action_for_same_type()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Action <string> action = s => { updatedValue = s; };
var handler = PredicateAndHandler.CreateAction(action);
stringHandler.Handlers.Add(handler);
typeHandlers.Add(stringHandler);
var builder = new MatchExpressionBuilder <string>();
//Build the expression
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(1, result.Arguments.Length, "Should only contain the action delegate");
Assert.Same(action, result.Arguments[0]);
//Compile the expression and test it
var lambda = (Func <string, Action <String>, bool>)result.LambdaExpression.Compile();
lambda("the value", action);
Assert.Equal("the value", updatedValue);
}
public void ShouldAllowGeneratingIntegersFromSequence()
{
var value1 = Any.IntegerFromSequence(startingValue: 12, step: 112);
var value2 = Any.IntegerFromSequence(startingValue: 12, step: 112);
XAssert.Equal(value1, value2 - 112);
Assert.Greater(value1, 12);
}
public void AllowAssertingWhetherConstClassHasUniqueValues()
{
XAssert.HasUniqueConstants <ConstsWithUniqueValues>();
var exception = Assert.Throws <DuplicateConstantException>(XAssert.HasUniqueConstants <ConstsWithRepeatingValues>);
XAssert.Equal("Val1 <0> is a duplicate of Val3 <0>", exception.Message);
}
public void ShouldGenerateStringOfGivenLength(int stringLength)
{
//WHEN
var str = Any.StringOfLength(stringLength);
//THEN
XAssert.Equal(stringLength, str.Length);
}
public void Build_two_funcs_for_different_types()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Func <string, bool> func1 = s =>
{
if (s.Length > 5)
{
updatedValue = s;
return(true);
}
return(false);
};
var handler1 = PredicateAndHandler.CreateFunc(func1);
stringHandler.Handlers.Add(handler1);
typeHandlers.Add(stringHandler);
var intHandler = new TypeHandler(typeof(int));
//Handle an int with one action
Func <int, bool> func2 = i =>
{
if (i < 10)
{
updatedValue = i.ToString();
return(true);
}
return(false);
};
var handler2 = PredicateAndHandler.CreateFunc(func2);
intHandler.Handlers.Add(handler2);
typeHandlers.Add(intHandler);
//Build the expression
var builder = new MatchExpressionBuilder <object>();
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(2, result.Arguments.Length, "Should contain the funcs");
Assert.Same(func1, result.Arguments[0]);
Assert.Same(func2, result.Arguments[1]);
//Compile the expression and test it
var lambda = (Func <object, Func <String, bool>, Func <int, bool>, bool>)result.LambdaExpression.Compile();
lambda("short", func1, func2);
Assert.Equal(null, updatedValue);
lambda("longer value", func1, func2);
Assert.Equal("longer value", updatedValue);
lambda(2, func1, func2);
Assert.Equal("2", updatedValue);
lambda(4711, func1, func2);
Assert.Equal("2", updatedValue);
}
public void ShouldAllowGeneratingDivisibleIntegers()
{
var value1 = Any.IntegerDivisibleBy(5);
var value2 = Any.IntegerDivisibleBy(5);
XAssert.NotEqual(value1, value2);
XAssert.Equal(0, value1 % 5);
XAssert.Equal(0, value2 % 5);
}
private static void AssertStringIsNumeric(string theString, int expectedLength)
{
XAssert.Equal(expectedLength, theString.Length);
foreach (var character in theString)
{
Assert.True(char.IsDigit(character), $"Expected digit, got {character}");
}
Assert.AreNotEqual('0', theString[0]);
}
public object CreateInstanceAsValueObjectWithPreviousParameters()
{
var instance = DefaultValue.Of(_type);
this.Invoking(_ => { instance = _.CreateInstanceWithCurrentConstructorArguments(); })
.Should().NotThrow(_type + " cannot even be created as a value object");
XAssert.Equal(_type, instance.GetType());
return(instance);
}
public void ShouldBeAbleToWrapSubstitutesAndSkipOverridingResultsStubbedWithNonDefaultValues()
{
var instance = Any.SubstituteOf <RecursiveInterface>();
var anotherInstance = Substitute.For <RecursiveInterface>();
instance.Nested.Returns(anotherInstance);
XAssert.Equal(anotherInstance, instance.Nested);
}
public void Build_with_more_than_15_arguments()
{
//15 is the maximum number of arguments without having to put actions/funcs/predicates in an object array.
//This comes from BuildLambdaExpression builds a Func, and Funcs may only have 16 input args: Func<T1,...,T16,TResult>
//T1-argument is reserved for the obligatory value argument, which leaves us with 15 arguments to be used for the
//actions/funcs/predicates. If we use more than that T16-argument will be an object[] containing the rest
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Action <string> actionString = s => { };
Predicate <string> predicateString = s => false;
for (var i = 0; i < 7; i++)
{
stringHandler.Handlers.Add(PredicateAndHandler.CreateAction(actionString, predicate: predicateString));
}
typeHandlers.Add(stringHandler);
var intHandler = new TypeHandler(typeof(int));
//Handle an int with one action
Action <int> actionInt = i => { updatedValue = i.ToString(); };
Predicate <int> predicateInt = i => i < 100;
var handler2 = PredicateAndHandler.CreateAction(actionInt, predicate: predicateInt);
intHandler.Handlers.Add(handler2);
typeHandlers.Add(intHandler);
//Build the expression
var builder = new MatchExpressionBuilder <object>();
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(15, result.Arguments.Length, "Should contain the action and predicate delegates");
var lastArgument = result.Arguments.Last();
Assert.IsType <object[]>(lastArgument);
var extraParamsArray = (object[])lastArgument;
Assert.Equal(2, extraParamsArray.Length);
Assert.Same(actionInt, extraParamsArray[0]);
Assert.Same(predicateInt, extraParamsArray[1]);
//Compile the expression and test it
var lambda = (Func <object, Action <String>, Predicate <string>, Action <String>, Predicate <string>, Action <String>, Predicate <string>, Action <String>, Predicate <string>, Action <String>, Predicate <string>, Action <String>, Predicate <string>, Action <String>, Predicate <string>, object[], bool>)
result.LambdaExpression.Compile();
lambda("some value", actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, extraParamsArray);
Assert.Equal(null, updatedValue);
lambda(4711, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, extraParamsArray);
Assert.Equal(null, updatedValue);
lambda(42, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, actionString, predicateString, extraParamsArray);
Assert.Equal("42", updatedValue);
}
public void ShouldCreateSortedSetWithThreeDistinctValues()
{
//WHEN
var set = Any.SortedSet <int>();
//THEN
CollectionAssert.IsOrdered(set);
CollectionAssert.AllItemsAreUnique(set);
XAssert.Equal(3, set.Count);
}
public void ShouldAllowCreatingCustomCollectionInstances()
{
var customCollection = Any.Instance <MyOwnCollection <RecursiveInterface> >();
XAssert.Equal(3, customCollection.Count);
foreach (var recursiveInterface in customCollection)
{
XAssert.NotNull(recursiveInterface);
}
}
public void ShouldAllowGeneratingDistinctIntegersWithExactNumberOfDigits()
{
var length = MaxLengthOfInt() - 1;
var value1 = Any.IntegerWithExactDigitsCount(length);
var value2 = Any.IntegerWithExactDigitsCount(length);
XAssert.Equal(length, value1.ToString().Length, value1.ToString());
XAssert.Equal(length, value2.ToString().Length, value2.ToString());
XAssert.NotEqual(value1, value2);
}
public void ShouldDepascalizeString(string input, string expected, string comment)
{
//GIVEN
var depascalization = new Depascalization.Transformation();
//WHEN
var depascalizedString = depascalization.Of(input);
//THEN
XAssert.Equal(expected, depascalizedString);
}
public void ShouldAllowGeneratingFuncs()
{
//GIVEN
var func = Any.Func <int, int, string>();
//WHEN
var result1 = func(1, 2);
var result2 = func(1, 3);
//THEN
XAssert.Equal(result2, result1);
}
public void ShouldCreateResolutionCapableOfGeneratingArrays()
{
//GIVEN
var resolution = new SpecialCasesOfResolutions <RecursiveInterface[]>(new CollectionGenerator(new GenericMethodProxyCalls())).CreateResolutionOfArray();
//WHEN
//THEN
Assert.True(resolution.Applies());
XAssert.NotNull(resolution.Apply(Any.Instance <IInstanceGenerator>()));
XAssert.Equal(3, resolution.Apply(Any.Instance <IInstanceGenerator>()).Length);
}
public void ShouldAlwaysReturnTheSameValueFromProxiedMethodOnTheSameObject()
{
//GIVEN
var obj = Any.Instance <ISimple>();
//WHEN
var valueFirstTime = obj.GetString();
var valueSecondTime = obj.GetString();
//THEN
XAssert.Equal(valueFirstTime, valueSecondTime);
}
public void ShouldAllowGeneratingDistinctUnsignedLongWithMaxNumberOfDigits()
{
var maxLength = MaxLengthOfULong();
var value1 = Any.UnsignedLongIntegerWithExactDigitsCount(maxLength);
var value2 = Any.UnsignedLongIntegerWithExactDigitsCount(maxLength);
XAssert.Equal(maxLength,
value1.ToString().Length,
value1.ToString());
XAssert.Equal(maxLength,
value2.ToString().Length, value2.ToString());
XAssert.NotEqual(value1, value2);
}
public void ShouldAllowAccessToValuesSetOnPropertiesOnInterfaceInstancesWhenBothGetAndSetArePublic()
{
//GIVEN
var someValue = Any.Integer();
var obj = Any.Instance <IGetSettable <int> >();
//WHEN
obj.Value = 123;
obj.Value = someValue;
//THEN
XAssert.Equal(someValue, obj.Value);
}
public void ShouldBeAbleToWrapSubstitutesAndNotOverrideStubbedValues()
{
//GIVEN
var instance = Any.SubstituteOf <RecursiveInterface>();
instance.Number.Returns(44543);
//WHEN
var result = instance.Number;
//THEN
XAssert.Equal(44543, result);
}
public void Build_two_actions_and_predicate_for_different_types()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Action <string> action1 = s => { updatedValue = s; };
Predicate <string> predicate1 = s => s.Length > 5 && s.Length < 15;
var handler1 = PredicateAndHandler.CreateAction(action1, predicate: predicate1);
stringHandler.Handlers.Add(handler1);
typeHandlers.Add(stringHandler);
var intHandler = new TypeHandler(typeof(int));
//Handle an int with one action
Action <int> action2 = i => { updatedValue = i.ToString(); };
Predicate <int> predicate2 = i => i < 10;
var handler2 = PredicateAndHandler.CreateAction(action2, predicate: predicate2);
intHandler.Handlers.Add(handler2);
typeHandlers.Add(intHandler);
//Build the expression
var builder = new MatchExpressionBuilder <object>();
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(4, result.Arguments.Length, "Should contain the action and predicate delegates");
Assert.Same(action1, result.Arguments[0]);
Assert.Same(predicate1, result.Arguments[1]);
Assert.Same(action2, result.Arguments[2]);
Assert.Same(predicate2, result.Arguments[3]);
//Compile the expression and test it
var lambda = (Func <object, Action <String>, Predicate <string>, Action <int>, Predicate <int>, bool>)result.LambdaExpression.Compile();
lambda("short", action1, predicate1, action2, predicate2);
Assert.Equal(null, updatedValue);
lambda("longer value", action1, predicate1, action2, predicate2);
Assert.Equal("longer value", updatedValue);
lambda("12345678901234567890", action1, predicate1, action2, predicate2);
Assert.Equal("longer value", updatedValue);
lambda(2, action1, predicate1, action2, predicate2);
Assert.Equal("2", updatedValue);
lambda(4711, action1, predicate1, action2, predicate2);
Assert.Equal("2", updatedValue);
}
public void ShouldOutputBlankCharWhenEvaluatedForArrayThatDoesNotContainTrigger()
{
//GIVEN
var onTrigger = Any.Char();
var fallbackValue = Any.String();
var fallback = Substitute.For <Displayable>();
var inputTriggers = Any.ArrayWithout(onTrigger);
var segment = new SwitchableSegment(onTrigger, Any.String(), fallback);
fallback.Evaluate(inputTriggers).Returns(fallbackValue);
//WHEN
var result = segment.Evaluate(inputTriggers);
//THEN
XAssert.Equal(fallbackValue, result);
}
public void ShouldOutputOnValueWhenEvaluatedForArrayThatContainsTrigger()
{
//GIVEN
var onTrigger = Any.Char();
var onValue = Any.String();
var inputTriggers = Any.ArrayWith(onTrigger);
var fallback = Substitute.For <Displayable>();
var segment = new SwitchableSegment(onTrigger, onValue, new BlankSpace());
fallback.Evaluate(inputTriggers).Returns(Any.StringOtherThan(onValue));
//WHEN
var result = segment.Evaluate(inputTriggers);
//THEN
XAssert.Equal(onValue, result);
}
public void ShouldReturnAllElementsInOrderTheyWereAdded()
{
//GIVEN
var element1 = Any.Integer();
var element2 = Any.Integer();
var element3 = Any.Integer();
var list = CircularList.CreateStartingFrom0(element1, element2, element3);
//WHEN
var returnedElement1 = list.Next();
var returnedElement2 = list.Next();
var returnedElement3 = list.Next();
//THEN
XAssert.Equal(returnedElement1, element1);
XAssert.Equal(returnedElement2, element2);
XAssert.Equal(returnedElement3, element3);
}
public void ShouldStartOverReturningElementsWhenItRunsOutOfElements()
{
//GIVEN
var element1 = Any.Integer();
var element2 = Any.Integer();
var list = CircularList.CreateStartingFrom0(element1, element2);
//WHEN
var returnedElement1 = list.Next();
var returnedElement2 = list.Next();
var returnedElement3 = list.Next();
var returnedElement4 = list.Next();
//THEN
XAssert.Equal(returnedElement1, element1);
XAssert.Equal(returnedElement2, element2);
XAssert.Equal(returnedElement3, element1);
XAssert.Equal(returnedElement4, element2);
}
public void Build_one_func_that_expects_base_type()
{
string updatedValue = null;
//Handle a string with one action
var typeHandlers = new List <TypeHandler>();
var stringHandler = new TypeHandler(typeof(string));
Func <object, bool> func = o =>
{
var s = (string)o;
if (s.Length > 5)
{
updatedValue = s;
return(true);
}
return(false);
};
var handler = PredicateAndHandler.CreateAction(func, handlerFirstArgumentShouldBeBaseType: true);
stringHandler.Handlers.Add(handler);
typeHandlers.Add(stringHandler);
var builder = new MatchExpressionBuilder <object>();
//Build the expression
var result = builder.BuildLambdaExpression(typeHandlers);
//Verify returned arguments
XAssert.Equal(1, result.Arguments.Length, "Should only contain the action delegate");
Assert.Same(func, result.Arguments[0]);
//Compile the expression and test it
var lambda = (Func <object, Func <object, bool>, bool>)result.LambdaExpression.Compile();
lambda(4711, func);
Assert.Equal(null, updatedValue);
lambda("short", func);
Assert.Equal(null, updatedValue);
lambda("the value", func);
Assert.Equal("the value", updatedValue);
}
private void AssertOneCall <T>(IReadOnlyList <T> to, string description, Func <T, bool> check)
{
XAssert.Equal(1, to.Count, description + ": Expected one call but in fact " + to.Count + " calls were made");
Assert.True(check(to[0]), description + ": did not match");
}