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// Test of constant folding of boolean-valued expressions.

// See http://code.google.com/p/v8/issues/detail?id=406

assertFalse(typeof(0) == "zero");
assertTrue(typeof(0) != "zero");

// The and and or truth tables with both operands constant.
assertFalse(typeof(0) == "zero" && typeof(0) == "zero");
assertFalse(typeof(0) == "zero" && typeof(0) != "zero");
assertFalse(typeof(0) != "zero" && typeof(0) == "zero");
assertTrue(typeof(0) != "zero" && typeof(0) != "zero");

assertFalse(typeof(0) == "zero" || typeof(0) == "zero");
assertTrue(typeof(0) == "zero" || typeof(0) != "zero");
assertTrue(typeof(0) != "zero" || typeof(0) == "zero");
assertTrue(typeof(0) != "zero" || typeof(0) != "zero");

// Same with just the left operand constant.
// Helper function to prevent simple constant folding.
function one() { return 1; }

assertFalse(typeof(0) == "zero" && one() < 0);
assertFalse(typeof(0) == "zero" && one() > 0);
assertFalse(typeof(0) != "zero" && one() < 0);
assertTrue(typeof(0) != "zero" && one() > 0);

assertFalse(typeof(0) == "zero" || one() < 0);
assertTrue(typeof(0) == "zero" || one() > 0);
assertTrue(typeof(0) != "zero" || one() < 0);
assertTrue(typeof(0) != "zero" || one() > 0);

// Same with just the right operand constant.
assertFalse(one() < 0 && typeof(0) == "zero");
assertFalse(one() < 0 && typeof(0) != "zero");
assertFalse(one() > 0 && typeof(0) == "zero");
assertTrue(one() > 0 && typeof(0) != "zero");

assertFalse(one() < 0 || typeof(0) == "zero");
assertTrue(one() < 0 || typeof(0) != "zero");
assertTrue(one() > 0 || typeof(0) == "zero");
assertTrue(one() > 0 || typeof(0) != "zero");