Livt.ML

tests/numeric/RequantizeInt8Test.lvt

namespace Livt.ML.Tests.Numeric

using Livt.ML.Numeric

/**
 * Exercises RequantizeInt8 with a shared fixture instance. Each scenario establishes the
 * inputs and state it needs.
 */
@Test
component RequantizeInt8Test
{
	// Shared fixture instances, signals, and observation state.
	requantize: RequantizeInt8

	/**
	 * Creates the shared fixture instances (RequantizeInt8). Tests initialize the state
	 * required by their scenario.
	 */
	new()
	{
		requantize = new RequantizeInt8()
	}

	/**
	 * Checks that Round s nearest with ties to even.
	 */
	@Test
	fn RoundsNearestWithTiesToEven()
	{
		assert requantize.Apply(14, 10, 0) == 1
		assert requantize.Apply(15, 10, 0) == 2
		assert requantize.Apply(25, 10, 0) == 2
		assert requantize.Apply(26, 10, 0) == 3
		assert requantize.Apply(-15, 10, 0) == -2
		assert requantize.Apply(-25, 10, 0) == -2
	}

	/**
	 * Checks the applies zero point and saturates case.
	 */
	@Test
	fn AppliesZeroPointAndSaturates()
	{
		assert requantize.Apply(10, 10, 5) == 6
		assert requantize.Apply(10000, 10, 0) == RequantizeInt8.MAX_VALUE
		assert requantize.Apply(-10000, 10, 0) == RequantizeInt8.MIN_VALUE
	}

	/**
	 * Checks that the component handles invalid divisor deterministically.
	 */
	@Test
	fn HandlesInvalidDivisorDeterministically()
	{
		assert requantize.Apply(100, 0, 7) == 7
		assert requantize.Apply(100, -1, 200) == RequantizeInt8.MAX_VALUE
	}
}