NUnit [TestCaseSource] with several arguments, for example, MbUnit [Factory]

Question

Can I use the NUnit [TestCaseSource] attribute with multiple arguments? Here is my code (which is migrated from MbUnit):

public IEnumerable<object[]> GetTestSwitchMultiItems() { yield return new object[] { SwitchType.Sell, 0.94733, new SwitchSourceItem[] { new SwitchSourceItem(1176, 100, 50, SwitchSourceItem.QuantityType.TotalQuantity, SwitchType.Sell)}, new SwitchEquivalentItem[] { new SwitchEquivalentItem(415318955, 35, 25, SwitchType.Buy), new SwitchEquivalentItem(4348, 65, 45, SwitchType.Buy) } }; yield return new object[] { SwitchType.Sell, 0.94733, new SwitchSourceItem[] { new SwitchSourceItem(1176, 100, 50, SwitchSourceItem.QuantityType.TotalQuantity, SwitchType.Sell)}, new SwitchEquivalentItem[] { new SwitchEquivalentItem(415318955, 15, 25, SwitchType.Buy), new SwitchEquivalentItem(4348, 25, 45, SwitchType.Buy), new SwitchEquivalentItem(430397879, 20, 15, SwitchType.Buy), new SwitchEquivalentItem(5330, 20, 85, SwitchType.Buy)} }; } [Test, TestCaseSource("GetTestSwitchMultiItems")] public void TestSwitchMultiItems(SwitchType switchType, double exchangeRate, SwitchSourceItem[] sources, SwitchEquivalentItem[] equivs) { ... } 

You see that parameters are passed as an object [] to have more than one parameter in TestSwitchMultiItems. If this works or I should use only one parameter in the parameters of TestSwitchMultiItems (object []) instead. Thanks.

Answer 1

Yes, you can use the TestCaseSource attribute with multiple arguments. In the above example, you will test TestSwitchMultiItems twice. I used NUnit on the following contrived test code. TestSwitchMultiItems is executed twice, and the trivial call of Assert in each test passes.

  [Test, TestCaseSource("GetTestSwitchMultiItems")] public void TestSwitchMultiItems(string switchType, double exchangeRate, object[] sources, object[] equivs) { Assert.AreEqual("Sell", switchType); } public IEnumerable<object[]> GetTestSwitchMultiItems() { yield return new object[] { "Sell", 0.94733, new object[] { new { a = 1176, b = 100, c = 50, d = 5, e = "Sell" } }, new object[] { new { a = 415318955, b = 35, c = 25, d = "Buy", e = 4348, f = 65, g = 45, h = "Buy" } } }; yield return new object[] { "Sell", 0.94733, new object[] { new { a = 1176, b = 100, c = 50, d = 5, e = "Sell" } }, new object[] { new { a = 415318955, b = 35, c = 25, d = "Buy", e = 4348, f = 65, g = 45, h = "Buy" }, new { a = 415318955, b = 35, c = 25, d = "Sell", e = 7348, f = 65, g = 45, h = "Sell" } } }; }