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<title>Test prefix/postfix.</title>
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<script src="../js/webgpu-functions.js"></script>
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<script>
const whlslTests = {};
const epsilon = 0.0001;

whlslTests.vectorAddition = async () => {
    let program = `
        float a()
        {
            float2 v = float2(3, 4);
            float2 u = v + 7;
            return u.x;
        }
        float b()
        {
            float2 v = float2(3, 4);
            float2 u = v + 7;
            return u.y;
        }
        float c()
        {
            float2 v = float2(3, 4);
            float2 u = 7 + v;
            return u.x;
        }
        float d()
        {
            float2 v = float2(3, 4);
            float2 u = 7 + v;
            return u.y;
        }
        float e()
        {
            float2 v = float2(3, 4);
            float2 u = +v;
            return u.x;
        }
        float f()
        {
            float2 v = float2(3, 4);
            float2 u = +v;
            return u.y;
        }
    `;

    assert_approx_equals(await callFloatFunction(program,  "a", []), 10, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "b", []), 11, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "c", []), 10, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "d", []), 11, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "e", []), 3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "f", []), 4, epsilon);
};

whlslTests.vectorSubtraction = async () => {
    let program = `
        float a()
        {
            float2 v = float2(3, 4);
            float2 u = v - 7;
            return u.x;
        }
        float b()
        {
            float2 v = float2(3, 4);
            float2 u = v - 7;
            return u.y;
        }
        float c()
        {
            float2 v = float2(3, 4);
            float2 u = 7 - v;
            return u.x;
        }
        float d()
        {
            float2 v = float2(3, 4);
            float2 u = 7 - v;
            return u.y;
        }
        float e()
        {
            float2 v = float2(3, 4);
            float2 u = -v;
            return u.x;
        }
        float f()
        {
            float2 v = float2(3, 4);
            float2 u = -v;
            return u.y;
        }
    `;

    assert_approx_equals(await callFloatFunction(program,  "a", []), -4, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "b", []), -3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "c", []), 4, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "d", []), 3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "e", []), -3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "f", []), -4, epsilon);
};

whlslTests.matrixAddition = async () => {
    let program = `
        float a()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = m + 7;
            return n[0][0];
        }
        float b()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = m + 7;
            return n[0][1];
        }
        float c()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = 7 + m;
            return n[0][0];
        }
        float d()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = 7 + m;
            return n[0][1];
        }
        float e()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = +m;
            return n[0][0];
        }
        float f()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = +m;
            return n[0][1];
        }
    `;

    assert_approx_equals(await callFloatFunction(program,  "a", []), 10, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "b", []), 11, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "c", []), 10, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "d", []), 11, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "e", []), 3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "f", []), 4, epsilon);
};

whlslTests.matrixSubtraction = async () => {
    let program = `
        float a()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = m - 7;
            return n[0][0];
        }
        float b()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = m - 7;
            return n[0][1];
        }
        float c()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = 7 - m;
            return n[0][0];
        }
        float d()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = 7 - m;
            return n[0][1];
        }
        float e()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = -m;
            return n[0][0];
        }
        float f()
        {
            float2x2 m = float2x2(float2(3, 4), float2(5, 6));
            float2x2 n = -m;
            return n[0][1];
        }
    `;

    assert_approx_equals(await callFloatFunction(program,  "a", []), -4, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "b", []), -3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "c", []), 4, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "d", []), 3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "e", []), -3, epsilon);
    assert_approx_equals(await callFloatFunction(program,  "f", []), -4, epsilon);
};

runTests(whlslTests);
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