UglifyJS/test/compress/issue-143.js

/**
 * There was an incorrect sort behavior documented in issue #143:
 * (x = f(…)) <= x → x >= (x = f(…))
 *
 * For example, let the equation be:
 * (a = parseInt('100')) <= a
 *
 * If a was an integer and has the value of 99,
 * (a = parseInt('100')) <= a → 100 <= 100 → true
 *
 * When transformed incorrectly:
 * a >= (a = parseInt('100')) → 99 >= 100 → false
 */

transformation_sort_order_equal: {
    options = {
        comparisons: true,
    }
    input: {
        console.log((a = parseInt("100")) == a);
    }
    expect: {
        console.log((a = parseInt("100")) == a);
    }
    expect_stdout: "true"
}

transformation_sort_order_unequal: {
    options = {
        comparisons: true,
    }
    input: {
        console.log((a = parseInt("100")) != a);
    }
    expect: {
        console.log((a = parseInt("100")) != a);
    }
    expect_stdout: "false"
}

transformation_sort_order_lesser_or_equal: {
    options = {
        comparisons: true,
    }
    input: {
        console.log((a = parseInt("100")) <= a);
    }
    expect: {
        console.log((a = parseInt("100")) <= a);
    }
    expect_stdout: "true"
}

transformation_sort_order_greater_or_equal: {
    options = {
        comparisons: true,
    }
    input: {
        console.log((a = parseInt("100")) >= a);
    }
    expect: {
        console.log((a = parseInt("100")) >= a);
    }
    expect_stdout: "true"
}