public void Should_compare_original_item_if_selector_returns_it()
{
var comparer = new ProjectionEqualityComparer <string, string>(s => s);
comparer.Equals("value", "value").Should().BeTrue();
comparer.Equals("value", "othervalue").Should().BeFalse();
}
public void Should_compare_nulls()
{
var comparer = new ProjectionEqualityComparer <string, string>(s => s);
comparer.Equals(null, null).Should().BeTrue();
comparer.Equals("value", null).Should().BeFalse();
comparer.Equals(null, "value").Should().BeFalse();
}
public void Should_use_provided_comparer()
{
var caseInsensitiveComparer = new ProjectionEqualityComparer <string, string>(s => s, StringComparer.OrdinalIgnoreCase);
caseInsensitiveComparer.Equals("value", "VALUE").Should().BeTrue();
var caseSensitiveComparer = new ProjectionEqualityComparer <string, string>(s => s, StringComparer.Ordinal);
caseSensitiveComparer.Equals("value", "VALUE").Should().BeFalse();
}
public void Should_compare_projected_objects(string value, string otherValue)
{
var comparer = new ProjectionEqualityComparer <string, string>(s => s.Substring(0, 3));
comparer.Equals(value, otherValue).Should().BeTrue();
}