1 files changed, 77 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/wasm-10.js b/js/src/jit-test/tests/debug/wasm-10.js
new file mode 100644
index 0000000000..6f43385bd3
--- /dev/null
+++ b/js/src/jit-test/tests/debug/wasm-10.js
@@ -0,0 +1,77 @@
+// |jit-test| test-also=--wasm-compiler=optimizing; skip-if: !wasmDebuggingEnabled()
+// Tests that wasm module scripts has inspectable locals.
+
+load(libdir + "wasm.js");
+load(libdir + 'eqArrayHelper.js');
+
+function monitorLocalValues(wast, lib, expected) {
+    function setupFrame(frame) {
+        var locals = {};
+        framesLocals.push(locals);
+        frame.environment.names().forEach(n => {
+            locals[n] = [frame.environment.getVariable(n)];
+        });
+        frame.onStep = function () {
+            frame.environment.names().forEach(n => {
+                var prevValues = locals[n];
+                if (!prevValues)
+                    locals[n] = prevValues = [void 0];
+                var value = frame.environment.getVariable(n);
+                if (prevValues[prevValues.length - 1] !== value)
+                    prevValues.push(value);
+            });
+        }
+    }
+    var framesLocals = [];
+    wasmRunWithDebugger(wast, lib,
+        function ({dbg}) {
+            dbg.onEnterFrame = function(frame) {
+                if (frame.type == "wasmcall")
+                    setupFrame(frame);
+            }
+        },
+        function ({error}) {
+            assertEq(error, undefined);
+        }
+    );
+    assertEq(framesLocals.length, expected.length);
+    for (var i = 0; i < framesLocals.length; i++) {
+        var frameLocals = framesLocals[i];
+        var expectedLocals = expected[i];
+        var localsNames = Object.keys(frameLocals);
+        assertEq(localsNames.length, Object.keys(expectedLocals).length);
+        localsNames.forEach(n => {
+            assertEqArray(frameLocals[n], expectedLocals[n]);
+        });
+    }
+}
+
+monitorLocalValues(
+    '(module (func (nop) (nop)) (export "test" (func 0)))',
+    undefined,
+    [{}]
+);
+monitorLocalValues(
+    '(module (func (export "test") (local i32) (i32.const 1) (set_local 0)))',
+    undefined,
+    [{var0: [0, 1]}]
+);
+monitorLocalValues(
+    '(module (func (export "test") (local f32) (f32.const 1.5) (set_local 0)))',
+    undefined,
+    [{var0: [0, 1.5]}]
+);
+monitorLocalValues(
+    '(module (func (export "test") (local f64) (f64.const 42.25) (set_local 0)))',
+    undefined,
+    [{var0: [0, 42.25]}]
+);
+monitorLocalValues(
+    `(module
+  (func (param i32) (result i32) (get_local 0) (i32.const 2) (i32.add))
+  (func (param i32) (local i32) (get_local 0) (call 0) (set_local 1))
+  (func (export "test") (i32.const 1) (call 1))
+)`.replace(/\n/g, " "),
+    undefined,
+    [{}, {var0: [1], var1: [0, 3]}, {var0: [1]}]
+);