1 files changed, 111 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/parser/stencil.js b/js/src/jit-test/tests/parser/stencil.js
new file mode 100644
index 0000000000..0001ebaca1
--- /dev/null
+++ b/js/src/jit-test/tests/parser/stencil.js
@@ -0,0 +1,111 @@
+const optionsFull = {
+  fileName: "compileToStencil-DATA.js",
+  lineNumber: 1,
+  eagerDelazificationStrategy: "ParseEverythingEagerly",
+};
+
+const optionsLazy = {
+  fileName: "compileToStencil-DATA.js",
+  lineNumber: 1,
+  eagerDelazificationStrategy: "OnDemandOnly",
+};
+
+const optionsLazyCache = {
+  fileName: "compileToStencil-DATA.js",
+  lineNumber: 1,
+  eagerDelazificationStrategy: "ConcurrentDepthFirst",
+};
+
+function testMainThread(script_str) {
+  const eval_f = eval;
+  const stencil = compileToStencil(script_str, optionsFull);
+  const result = evalStencil(stencil, optionsFull);
+  assertEq(result, eval_f(script_str));
+}
+
+function testMainThreadDelazifyAll(script_str) {
+  if (isLcovEnabled()) {
+    // Code-coverage implies forceFullParse = true, and as such it cannot be
+    // used while testing to incrementally delazify.
+    return;
+  }
+  const eval_f = eval;
+  const stencil = compileToStencil(script_str, optionsLazy);
+  const result = evalStencil(stencil, optionsLazy);
+  assertEq(result, eval_f(script_str));
+}
+
+function testMainThreadCacheAll(script_str) {
+  if (isLcovEnabled() || helperThreadCount() === 0) {
+    // Code-coverage implies forceFullParse = true, and as such it cannot be
+    // used while testing to incrementally delazify.
+    // Similarly, concurrent delazification requires off-threads processing.
+    return;
+  }
+  const eval_f = eval;
+  const stencil = compileToStencil(script_str, optionsLazyCache);
+  const result = evalStencil(stencil, optionsLazyCache);
+  assertEq(result, eval_f(script_str));
+}
+
+function testOffThread(script_str) {
+  const eval_f = eval;
+  const job = offThreadCompileToStencil(script_str, optionsFull);
+  const stencil = finishOffThreadStencil(job);
+  const result = evalStencil(stencil, optionsFull);
+  assertEq(result, eval_f(script_str));
+}
+
+testMainThread(`
+var a = 10;
+let b = 20, c = 30;
+const d = 40;
+function f() {
+  return a + b + c + d;
+}
+f();
+`);
+
+testMainThreadDelazifyAll(`
+var a1 = 10;
+let b1 = 20, c1 = 30;
+const d1 = 40;
+function g1() {
+  function h1() {
+    return a1 + b1;
+  }
+  return h1() + c1;
+}
+function f1() {
+  return a1 + b1 + c1 + d1;
+}
+f1();
+`);
+
+testMainThreadCacheAll(`
+var a3 = 10;
+let b3 = 20, c3 = 30;
+const d3 = 40;
+function g3() {
+  function h3() {
+    return a3 + b3;
+  }
+  return h3() + c3;
+}
+function f3() {
+  return a3 + b3 + c3 + d3;
+}
+f3();
+`);
+
+if (helperThreadCount() > 0) {
+  testOffThread(`
+var a2 = 10;
+let b2 = 20, c2 = 30;
+const d2 = 40;
+function f2() {
+  return a2 + b2 + c2 + d2;
+}
+f2();
+`);
+}