public void Only_Calls_GetRulesFromTypeCore_Once_Per_Type()
{
// Arrange
int numCalls = 0;
var expectedStringResult = new RuleSet(new Rule[] { }.ToLookup(x => "test1", x => x));
var expectedDateTimeResult = new RuleSet(new Rule[] { }.ToLookup(x => "test2", x => x));
var provider = new TestRulesProvider(t =>
{
numCalls++;
if (t == typeof(string))
return expectedStringResult;
if (t == typeof(DateTime))
return expectedDateTimeResult;
throw new ArgumentException();
});
// Act / Assert
var stringResult = provider.GetRulesFromType(typeof(string));
Assert.Same(expectedStringResult, stringResult);
Assert.Equal(1, numCalls);
var dateTimeResult = provider.GetRulesFromType(typeof(DateTime));
Assert.Same(expectedDateTimeResult, dateTimeResult);
Assert.Equal(2, numCalls);
var stringResult2 = provider.GetRulesFromType(typeof(string));
Assert.Same(expectedStringResult, stringResult2);
Assert.Equal(2, numCalls);
var dateTimeResult2 = provider.GetRulesFromType(typeof(DateTime));
Assert.Same(expectedDateTimeResult, dateTimeResult2);
Assert.Equal(2, numCalls);
}
public void Returns_Rules_Given_By_Subclass()
{
// Arrange
var expectedStringResult = new RuleSet(new Rule[] {}.ToLookup(x => "test1", x => x));
var expectedDateTimeResult = new RuleSet(new Rule[] {}.ToLookup(x => "test2", x => x));
var provider = new TestRulesProvider(t => {
if(t == typeof(string))
return expectedStringResult;
if (t == typeof(DateTime))
return expectedDateTimeResult;
throw new ArgumentException();
});
// Act
var stringResult = provider.GetRulesFromType(typeof (string));
var dateTimeResult = provider.GetRulesFromType(typeof(DateTime));
// Assert
Assert.Same(expectedStringResult, stringResult);
Assert.Same(expectedDateTimeResult, dateTimeResult);
}