public void Equality()
{
var lineMappings = new LineMapping[]
{
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: true)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 2)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(2, 2)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 1), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(1, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("file.cs", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), 0, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 2)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 0), new LinePosition(2, 2)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(0, 1), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
new LineMapping(new LinePositionSpan(new LinePosition(1, 0), new LinePosition(1, 1)), null, new FileLinePositionSpan("", new LinePositionSpan(new LinePosition(0, 0), new LinePosition(1, 1)), hasMappedPath: false)),
};
var equalityUnits = lineMappings.SelectMany((left, leftIndex) => lineMappings.Select((right, rightIndex) => CreateEqualityUnit(left, leftIndex, right, rightIndex))).ToArray();
EqualityUtil.RunAll(
(left, right) => left == right,
(left, right) => left != right,
equalityUnits);