1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-allocationSamplingProbability-01.js b/js/src/jit-test/tests/debug/Memory-allocationSamplingProbability-01.js
new file mode 100644
index 0000000000..3dbd7be9d9
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Memory-allocationSamplingProbability-01.js
@@ -0,0 +1,45 @@
+// Test that setting Debugger.Memory.prototype.allocationSamplingProbability to
+// a bad number throws.
+
+load(libdir + "asserts.js");
+
+const root = newGlobal({newCompartment: true});
+
+const dbg = new Debugger();
+const wrappedRoot = dbg.addDebuggee(root);
+
+var mem = dbg.memory;
+
+// Out of range, negative
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = -Number.MAX_VALUE,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = -1,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = -Number.MIN_VALUE,
+                       TypeError);
+
+// In range
+mem.allocationSamplingProbability = -0.0;
+mem.allocationSamplingProbability = 0.0;
+mem.allocationSamplingProbability = Number.MIN_VALUE;
+mem.allocationSamplingProbability = 1 / 3;
+mem.allocationSamplingProbability = .5;
+mem.allocationSamplingProbability = 2 / 3;
+mem.allocationSamplingProbability = 1 - Math.pow(2, -53);
+mem.allocationSamplingProbability = 1;
+
+// Out of range, positive
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = 1 + Number.EPSILON,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = 2,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = Number.MAX_VALUE,
+                       TypeError);
+
+// Out of range, non-finite
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = -Infinity,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = Infinity,
+                       TypeError);
+assertThrowsInstanceOf(() => mem.allocationSamplingProbability = NaN,
+                       TypeError);