Re: [Vala] Using TestCase class: assert (this is Object) fails in method, but not in constructor

[Al Thomas <astavale yahoo co uk>]

----- Original Message -----
> From: Felipe Lavratti <felipelav gmail com>
> Sent: Thursday, 4 February 2016, 20:18
> Subject: [Vala] Using TestCase class: assert (this is Object) fails in method, but not in constructor
>
> Have a look at this code:
>
>     public class Tests : Object {
>
>         public Tests () {
>             assert (this is Object); // THIS ASSERTION PASSES
>             ts = new TestSuite ("dot_cap_dimmer") ;
>             ts.add (new TestCase ("construction", (TestFixtureFunc)
> setup, (TestFixtureFunc) test_construction, (TestFixtureFunc)
> teardown)) ;
>             TestSuite.get_root ().add_suite (ts) ;
>         }
>
>         void setup(void * fixture) {
>             assert (this is Object);  // THIS ASSERTION FAILS
>             this.cut = new DotCapDimmer () ;
>             this.cut.on_change.connect (slot) ;
>             this.called = false ;
>         }
>         ...
>      }
>
> Would anyone know what happens to the `this` variable when called
> from the TestCase ? How came it is no longer an Object anymore ?


You need to instantiate your fixture so it has `this` to act upon.
Your fixture should be a separate object to the test.
As an outline;


void main( string[] args ) {

  Test.init(ref args);
  TestSuite suite = new TestSuite( "DotCapDimmer" );
  TestSuite.get_root ().add_suite (suite);

  MyTestFixture fixture = new MyTestFixture();
  suite.add( new TestCase ( "MyFirstTestCase", fixture.set_up, (TestFixtureFunc)test_my_first_test, 
fixture.tear_down ));
  Test.run();
}

void test_my_first_test( MyTestFixture fixture ) {
    // do testing

}



I put the test in a namespace like UnitTest.ModuleDirectory.FilenameOfClassToBeTested

There is also g_test_add_data_func_full () instead, but I haven't used that yet.

Al