1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/wasm-05.js b/js/src/jit-test/tests/debug/wasm-05.js
new file mode 100644
index 000000000..e0262abe4
--- /dev/null
+++ b/js/src/jit-test/tests/debug/wasm-05.js
@@ -0,0 +1,38 @@
+// Tests that wasm module scripts have text line to bytecode offset information
+// when source text is generated.
+
+load(libdir + "asserts.js");
+
+// Disabled in aurora (see also bug 1326452).
+quit();
+
+// Checking if experimental format generates internal source map to binary file
+// by querying debugger scripts getLineOffsets.
+// (Notice that the source map will not be produced by wasmBinaryToText)
+function getAllOffsets(wast) {
+  var sandbox = newGlobal('');
+  var dbg = new Debugger();
+  dbg.addDebuggee(sandbox);
+  sandbox.eval(`
+    var wasm = wasmTextToBinary('${wast}');
+    var m = new WebAssembly.Instance(new WebAssembly.Module(wasm));
+  `);
+  var wasmScript = dbg.findScripts().filter(s => s.format == 'wasm')[0];
+  var lines = wasmScript.source.text.split('\n');
+  return lines.map((l, n) => { return { str: l, offsets: wasmScript.getLineOffsets(n + 1) }; });
+}
+
+var result1 = getAllOffsets('(module \
+  (func (nop)) \
+  (func (drop (f32.sqrt (f32.add (f32.const 1.0) (f32.const 2.0))))) \
+)');
+
+var nopLine = result1.filter(i => i.str.indexOf('nop') >= 0);
+assertEq(nopLine.length, 1);
+// The nopLine shall have single offset.
+assertEq(nopLine[0].offsets.length, 1);
+assertEq(nopLine[0].offsets[0] > 0, true);
+
+var singleOffsetLines = result1.filter(i => i.offsets.length === 1);
+// There shall be total 6 lines with single offset.
+assertEq(singleOffsetLines.length === 6, true);