anchor.diff:        expectThat(withTheseProjects: () => [project1], weGetTheseInvocations: [
           () => new TestProcessInvocation(project1, const [])
         ]);
  -    }, skip: true);
  +    }, skip: false);
   
       group('for two projects with a single dependency', () {
         final project1 = aProject('project1');
  
positive.code:     group(
          'when no projects provided',
          () =>
              expectThat(withTheseProjects: () => [], weGetTheseInvocations: []));
  
      group('for a single project that has no dependencies', () {
        final project1 = aProject('project1');
  
negative.code: 
      test('invocation has expected dependencies', () {
        expect(actual().dependencies.map((p) => p.id),
            unorderedEquals(expected().dependencies.map((p) => p.id)));
      });
    }
  }
  