public BehaviourSpec()
{
var testSubject = new TestSubject();
Describe("Behaviour", () =>
{
Describe("of Return Value", () =>
{
It("should return the provided return value.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc");
var result = testSubject.Func();
Expect(result).ToBe("abc");
});
It("should cycle through return values once when using return values.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValues("a", "b", "c");
var result = testSubject.Func();
Expect(result).ToBe("a");
result = testSubject.Func();
Expect(result).ToBe("b");
result = testSubject.Func();
Expect(result).ToBe("c");
});
});
Describe("of Call Through", () =>
{
It("should call through to the original implementation.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.CallThrough();
var result = testSubject.Func();
Expect(result).ToBe("xyz");
});
});
Describe("of Default", () =>
{
It("should return the default value of the function.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func));
var result = testSubject.Func();
Expect(result).ToBeDefault();
});
It("should have no logic executed for an action.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Action));
testSubject.Action();
Expect(testSubject.Value).ToBeDefault();
});
});
Describe("of Throw", () =>
{
It("should throw the given exception.", () =>
{
var exception = new System.Exception();
Jaz.SpyOn(testSubject, nameof(testSubject.Action)).And.Throw(exception);
try
{
testSubject.Action();
Fail("Expected an exception to be thrown.");
}
catch (Exception ex)
{
if (ex != exception)
{
throw;
}
}
});
It("should throw an exception of the given type.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Action)).And.Throw <Exception>();
try
{
testSubject.Action();
Fail("Expected an exception to be thrown.");
}
catch (Exception ex)
{
if (ex.Message != "Exception of type 'System.Exception' was thrown.")
{
throw;
}
}
});
});
Describe("in sequence", () =>
{
It("should execute forever if added using And.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc");
var result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
});
It("should clear existing behaviours if added using And.", () =>
{
var spy = Jaz.SpyOn(testSubject, nameof(testSubject.Func));
spy.And.Throw <Exception>();
spy.And.ReturnValue("abc");
var result = testSubject.Func();
Expect(result).ToBe("abc");
});
It("should execute once if added using Then.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue(null).Then.ReturnValue("abc");
var result = testSubject.Func();
Expect(result).ToBeDefault();
result = testSubject.Func();
Expect(result).ToBe("abc");
try
{
testSubject.Func();
Fail("Expected spy exception after running out of behaviours.");
}
catch (JazSpyException)
{
}
});
It("should execute once if Once is specified.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc").Once();
var result = testSubject.Func();
Expect(result).ToBe("abc");
try
{
testSubject.Func();
Fail("Expected spy exception after running out of behaviours.");
}
catch (JazSpyException)
{
}
});
It("should excute twice if Twice is specified.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc").Twice();
var result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
try
{
testSubject.Func();
Fail("Expected spy exception after running out of behaviours.");
}
catch (JazSpyException)
{
}
});
It("should execute the number of times specified in Times.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc").Times(3);
var result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
try
{
testSubject.Func();
Fail("Expected spy exception after running out of behaviours.");
}
catch (JazSpyException)
{
}
});
It("should execute forever if Forever is specified.", () =>
{
Jaz.SpyOn(testSubject, nameof(testSubject.Func)).And.ReturnValue("abc").Forever();
var result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
result = testSubject.Func();
Expect(result).ToBe("abc");
});
});
});
}