How To Reset Your SubSonic 3 ActiveRecord Test Repository For Each Unit Test

Ian — Fri, 04 Sep 2009 13:09:38 +0000

When writing unit tests with SubSonic’s new built-in testing for ActiveRecord don’t forget that each time you call the Setup() method on your ActiveRecord object it adds records to any that have already been created. For example:

[Test]
public void Foo_Bar() {
    Foo.Setup(10);
    Assert.AreEqual(10, Foo.All().Count());
}

[Test]
public void Bar_Foo() {
    Foo.Setup(10);

    // This will fail: Foo.All().Count() will return 20
    Assert.AreEqual(10, Foo.All().Count());
}

To reset your test repositories you will need to call the ResetTestRepo() method prior to each test, which can be accomplished easily enough by adding the method call to your test’s [SetUp] method:

[SetUp]
public void SetUp() {
    Foo.ResetTestRepo();
}

[Test]
public void Foo_Bar() {
    Foo.Setup(10);
    Assert.AreEqual(10, Foo.All().Count());
}

[Test]
public void Bar_Foo() {
    Foo.Setup(10);

    // Now Foo.All().Count() will return 10 and the test will pass
    Assert.AreEqual(10, Foo.All().Count());
}

Hopefully this will save you a bit of time, as well as head scratching :p

Ian Oxley » unit testing

How To Reset Your SubSonic 3 ActiveRecord Test Repository For Each Unit Test