public void Ctor_ExecuteBothOverloads_MatchExpectation()
{
// Use default validator
ObjectCollection <string> c = new UnvalidatedObjectCollection <string>();
c.Add("value1");
c.Add("value2");
Assert.Throws <ArgumentNullException>(() => { c.Add(null); });
Assert.Equal(2, c.Count);
Assert.True(c.Contains("value2"));
Assert.True(c.Contains("value1"));
// Use custom validator
c = new StringlyItemCollection();
c.Add("value1");
Assert.Throws <InvalidOperationException>(() => { c.Add(null); });
}
public void ContainsAndRemove_UsesEqualitySemantics()
{
var c = new UnvalidatedObjectCollection <string>();
string val1 = "value1";
string val1DifferentReference = "value" + 1;
Assert.NotSame(val1, val1DifferentReference);
Assert.Equal(val1, val1DifferentReference);
string val2 = "value2";
string val2DifferentReference = "value" + 2;
Assert.NotSame(val2, val2DifferentReference);
Assert.Equal(val2, val2DifferentReference);
string val3 = "value3";
// Start empty
Assert.Equal(0, c.Count);
Assert.False(c.Contains(val1));
// Single item
c.Add(val1);
Assert.Equal(1, c.Count);
Assert.True(c.Contains(val1));
Assert.True(c.Contains(val1DifferentReference));
Assert.False(c.Contains(val2));
// Single item removal
Assert.True(c.Remove(val1));
Assert.Equal(0, c.Count);
Assert.False(c.Contains(val1));
// Multi-value
c.Add(val1);
c.Add(val2);
Assert.Equal(2, c.Count);
Assert.True(c.Contains(val1));
Assert.True(c.Contains(val1DifferentReference));
Assert.True(c.Contains(val2));
Assert.True(c.Contains(val1DifferentReference));
Assert.False(c.Contains(val3));
// Removal when multiple exist, using different reference.
Assert.True(c.Remove(val1));
Assert.False(c.Contains(val1));
Assert.True(c.Contains(val2));
Assert.Equal(1, c.Count);
// Removal of non-existent
Assert.False(c.Remove(val3));
Assert.False(c.Remove(val1DifferentReference));
Assert.Equal(1, c.Count);
Assert.True(c.Contains(val2DifferentReference));
// Removal last item
Assert.True(c.Remove(val2DifferentReference));
Assert.Equal(0, c.Count);
Assert.False(c.Contains(val2));
Assert.False(c.Contains(val1));
// Remove from empty
Assert.False(c.Remove(val1));
Assert.False(c.Remove(val2));
Assert.False(c.Remove(val3));
Assert.Equal(0, c.Count);
}