1 files changed, 160 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/exceptions/events.js b/js/src/jit-test/tests/wasm/exceptions/events.js
new file mode 100644
index 0000000000..00bb244546
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/exceptions/events.js
@@ -0,0 +1,160 @@
+// Tests for tag section support
+
+load(libdir + "wasm-binary.js");
+
+function wasmEval(code, imports) {
+  new WebAssembly.Instance(new WebAssembly.Module(code), imports).exports;
+}
+
+function wasmError(code, errorType, regexp) {
+  assertErrorMessage(() => wasmEval(code, {}), errorType, regexp);
+}
+
+const emptyType = { args: [], ret: VoidCode };
+const badExnType = { args: [], ret: I32Code };
+
+wasmEvalText(`
+  (module
+    (type (func (param i32)))
+    (tag $exn (type 0)))
+`);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    { name: tagId, body: [] },
+  ]),
+  WebAssembly.CompileError,
+  /expected number of tags/
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    { name: tagId, body: [1, 1] },
+  ]),
+  WebAssembly.CompileError,
+  /illegal tag kind/
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    { name: tagId, body: [1, 0] },
+  ]),
+  WebAssembly.CompileError,
+  /expected function index in tag/
+);
+
+wasmEval(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    tagSection([{ type: 0 }]),
+  ])
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([badExnType]),
+    memorySection(0),
+    tagSection([{ type: 0 }]),
+  ]),
+  WebAssembly.CompileError,
+  /tag function types must not return anything/
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    tagSection([{ type: 1 }]),
+  ]),
+  WebAssembly.CompileError,
+  /function type index in tag out of bounds/
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    tagSection([{ type: 0 }]),
+    memorySection(0),
+  ]),
+  WebAssembly.CompileError,
+  /expected custom section/
+);
+
+(() => {
+  const body = [1];
+  body.push(...string("mod"));
+  body.push(...string("exn"));
+  body.push(...varU32(TagCode));
+
+  wasmError(
+    moduleWithSections([
+      sigSection([emptyType]),
+      { name: importId, body: body },
+    ]),
+    WebAssembly.CompileError,
+    /expected tag kind/
+  );
+
+  body.push(...varU32(0));
+  wasmError(
+    moduleWithSections([
+      sigSection([emptyType]),
+      { name: importId, body: body },
+    ]),
+    WebAssembly.CompileError,
+    /expected function index in tag/
+  );
+
+  body.push(...varU32(1));
+  wasmError(
+    moduleWithSections([
+      sigSection([emptyType]),
+      { name: importId, body: body },
+    ]),
+    WebAssembly.CompileError,
+    /function type index in tag out of bounds/
+  );
+})();
+
+wasmEval(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    tagSection([{ type: 0 }]),
+    exportSection([{ tagIndex: 0, name: "exn" }]),
+  ])
+);
+
+wasmError(
+  moduleWithSections([
+    sigSection([emptyType]),
+    memorySection(0),
+    tagSection([{ type: 0 }]),
+    exportSection([{ tagIndex: 1, name: "exn" }]),
+  ]),
+  WebAssembly.CompileError,
+  /exported tag index out of bounds/
+);
+
+(() => {
+  const body = [1];
+  body.push(...string("exn"));
+  body.push(...varU32(TagCode));
+  wasmError(
+    moduleWithSections([
+      sigSection([emptyType]),
+      memorySection(0),
+      tagSection([{ type: 0 }]),
+      { name: exportId, body: body },
+    ]),
+    WebAssembly.CompileError,
+    /expected tag index/
+  );
+})();