public void OptimizeReposSuccessTest()
{
// Prepare
var mock = new Mock <ICommandRunner>();
mock.Setup(f => f.Run("git", It.IsAny <string>()))
.Returns(0);
IFixer fixer = new Fixer(new MetaInfo(), new Options(), mock.Object, "", null, null);
// Act
fixer.OptimizeRepos();
// Assert
mock.Verify(f => f.Run("git", "gc"), Times.Once());
}