public void Nullable_Integers_Parsed_From_Strings_Correctly(string intPropertyName, string environmentKey, bool writable, bool changeable)
{
var intProperty = typeof(OwinContext).GetProperty(intPropertyName);
// When the string is null the integer should also be null
_Environment[environmentKey] = null;
Assert.IsNull(intProperty.GetValue(_Context, null));
// When the string is a number the integer should reflect it
_Environment[environmentKey] = "123";
Assert.AreEqual(123, intProperty.GetValue(_Context, null));
// Setting the string to an unparseable value should report a null integer
_Environment[environmentKey] = "not a number";
Assert.IsNull(intProperty.GetValue(_Context, null));
if (writable)
{
if (changeable)
{
// Setting the integer value should change the environment
intProperty.SetValue(_Context, 88);
Assert.AreEqual("88", _Environment[environmentKey]);
// Setting the integer to null should remove the environment value
intProperty.SetValue(_Context, null);
Assert.IsFalse(_Environment.ContainsKey(environmentKey));
}
else
{
// We can write if it's unchanged
_Environment[environmentKey] = "88";
intProperty.SetValue(_Context, 88);
Assert.AreEqual("88", _Environment[environmentKey]);
// We can write brand new values
_Environment.Remove(environmentKey);
intProperty.SetValue(_Context, 99);
Assert.AreEqual("99", _Environment[environmentKey]);
// We cannot change existing values to new ones
var sawException = false;
try {
intProperty.SetValue(_Context, 200);
} catch (TargetInvocationException ex) {
if (ex.InnerException is InvalidOperationException)
{
sawException = true;
}
}
Assert.IsTrue(sawException);
Assert.AreEqual("99", _Environment[environmentKey]);
}
}
}
public void ContainsKey_Returns_True_If_Dictionary_Contains_Key()
{
_Dictionary.Add("key", 1);
Assert.IsTrue(_Dictionary.ContainsKey("key"));
}