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-rw-r--r--js/src/jit-test/tests/basic/number-isinteger.js15
1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/number-isinteger.js b/js/src/jit-test/tests/basic/number-isinteger.js
new file mode 100644
index 0000000000..750a987871
--- /dev/null
+++ b/js/src/jit-test/tests/basic/number-isinteger.js
@@ -0,0 +1,15 @@
+assertEq(Number.isInteger(4), true);
+assertEq(Number.isInteger(4.), true);
+assertEq(Number.isInteger(4.2), false);
+assertEq(Number.isInteger(0.), true);
+assertEq(Number.isInteger(-0.), true);
+assertEq(Number.isInteger(Infinity), false);
+assertEq(Number.isInteger(-Infinity), false);
+assertEq(Number.isInteger(NaN), false);
+assertEq(Number.isInteger(true), false);
+assertEq(Number.isInteger(false), false);
+assertEq(Number.isInteger({valueOf: function () { return 3; }}), false);
+assertEq(Number.isInteger({valueOf: function () { return 0/0; }}), false);
+assertEq(Number.isInteger({ valueOf: function() { throw 17; } }), false);
+assertEq(Number.isInteger({ toString: function() { throw 17; } }), false);
+assertEq(Number.isInteger({ valueOf: function() { throw 17; }, toString: function() { throw 42; } }), false);