public void ThrowsIfLoaderReturnsNull()
{
var underTest = new EfConfigurationLoader(ClassName, Mock.Of <ITypeLoader>());
var cx = Assert.Throws <ConfigurationErrorsException>(() => underTest.InstantiateEfConfigurationClass());
Assert.Equal($"Could not find type '{ClassName}', configured in '{ConfigClassSettingKey}'", cx.Message);
}
public void ThrowsIfTypeIsNotAssignableToDbMigrationsConfiguration()
{
var mockLoader = new Mock <ITypeLoader>();
var type = typeof(NotAssignableToDbMigrationsConfiguration);
Assert.False(typeof(DbMigrationsConfiguration).IsAssignableFrom(type));
mockLoader.Setup(m => m.Load(ClassName)).Returns(type);
var underTest = new EfConfigurationLoader(ClassName, mockLoader.Object);
var cx = Assert.Throws <ConfigurationErrorsException>(() => underTest.InstantiateEfConfigurationClass());
Assert.Equal($"Type '{type.FullName}', configured in '{ConfigClassSettingKey}', does not extend DbMigrationsConfiguration", cx.Message);
}
public void ThrowsIfLoaderThrows()
{
var x = new Exception(ExceptionMessage);
var mockLoader = new Mock <ITypeLoader>();
mockLoader.Setup(m => m.Load(ClassName)).Throws(x);
var underTest = new EfConfigurationLoader(ClassName, mockLoader.Object);
var cx = Assert.Throws <ConfigurationErrorsException>(() => underTest.InstantiateEfConfigurationClass());
Assert.Equal($"Error loading type '{ClassName}', configured in '{ConfigClassSettingKey}'", cx.Message);
Assert.Equal(x, cx.InnerException);
}
public void HappyPath()
{
var mockLoader = new Mock <ITypeLoader>();
var type = typeof(CanInstantiate);
Assert.True(typeof(DbMigrationsConfiguration).IsAssignableFrom(type));
mockLoader.Setup(m => m.Load(ClassName)).Returns(type);
var underTest = new EfConfigurationLoader(ClassName, mockLoader.Object);
var instance = underTest.InstantiateEfConfigurationClass();
Assert.IsAssignableFrom <CanInstantiate>(instance);
}
public void ThrowsIfClassCannotBeInstantiated()
{
var mockLoader = new Mock <ITypeLoader>();
var type = typeof(CannotInstantiate);
Assert.True(typeof(DbMigrationsConfiguration).IsAssignableFrom(type));
mockLoader.Setup(m => m.Load(ClassName)).Returns(type);
var underTest = new EfConfigurationLoader(ClassName, mockLoader.Object);
var cx = Assert.Throws <ConfigurationErrorsException>(() => underTest.InstantiateEfConfigurationClass());
Assert.Equal($"Could not instantiate type '{type.FullName}', configured in '{ConfigClassSettingKey}'", cx.Message);
Assert.NotNull(cx.InnerException);
Assert.Equal("Exception has been thrown by the target of an invocation.", cx.InnerException.Message);
Assert.NotNull(cx.InnerException.InnerException);
Assert.Equal(ExceptionMessage, cx.InnerException.InnerException.Message);
}
