1 files changed, 110 insertions, 0 deletions
diff --git a/scripts/test/wasm2js.py b/scripts/test/wasm2js.py
new file mode 100755
index 000000000..9a72895c1
--- /dev/null
+++ b/scripts/test/wasm2js.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 WebAssembly Community Group participants
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from support import run_command
+from shared import (
+    WASM2JS, MOZJS, NODEJS, fail_if_not_identical, options, tests,
+    fail_if_not_identical_to_file
+)
+
+# tests with i64s, invokes, etc.
+spec_dir = os.path.join(options.binaryen_test, 'spec')
+spec_tests = [os.path.join(spec_dir, t)
+              for t in sorted(os.listdir(spec_dir))
+              if '.fail' not in t]
+wasm2js_dir = os.path.join(options.binaryen_test, 'wasm2js')
+extra_wasm2js_tests = [os.path.join(wasm2js_dir, t) for t in
+                       sorted(os.listdir(wasm2js_dir))]
+assert_tests = ['wasm2js.wast.asserts']
+# These tests exercise functionality not supported by wasm2js
+wasm2js_blacklist = ['empty_imported_table.wast']
+
+
+def test_wasm2js_output():
+  for wasm in tests + spec_tests + extra_wasm2js_tests:
+    if not wasm.endswith('.wast'):
+      continue
+    basename = os.path.basename(wasm)
+    if basename in wasm2js_blacklist:
+      continue
+
+    asm = basename.replace('.wast', '.2asm.js')
+    expected_file = os.path.join(wasm2js_dir, asm)
+
+    if not os.path.exists(expected_file):
+      continue
+
+    print '..', wasm
+
+    cmd = WASM2JS + [os.path.join(options.binaryen_test, wasm)]
+    out = run_command(cmd)
+    fail_if_not_identical_to_file(out, expected_file)
+
+    if not NODEJS and not MOZJS:
+      print 'No JS interpreters. Skipping spec tests.'
+      continue
+
+    open('a.2asm.mjs', 'w').write(out)
+
+    cmd += ['--allow-asserts']
+    out = run_command(cmd)
+
+    open('a.2asm.asserts.mjs', 'w').write(out)
+
+    # verify asm.js is valid js, note that we're using --experimental-modules
+    # to enable ESM syntax and we're also passing a custom loader to handle the
+    # `spectest` module in our tests.
+    if NODEJS:
+      node = [NODEJS, '--experimental-modules', '--loader', './scripts/test/node-esm-loader.mjs']
+      cmd = node[:]
+      cmd.append('a.2asm.mjs')
+      out = run_command(cmd)
+      fail_if_not_identical(out, '')
+      cmd = node[:]
+      cmd.append('a.2asm.asserts.mjs')
+      out = run_command(cmd, expected_err='', err_ignore='The ESM module loader is experimental')
+      fail_if_not_identical(out, '')
+
+
+def test_asserts_output():
+  for wasm in assert_tests:
+    print '..', wasm
+
+    asserts = os.path.basename(wasm).replace('.wast.asserts', '.asserts.js')
+    traps = os.path.basename(wasm).replace('.wast.asserts', '.traps.js')
+    asserts_expected_file = os.path.join(options.binaryen_test, asserts)
+    traps_expected_file = os.path.join(options.binaryen_test, traps)
+
+    wasm = os.path.join(wasm2js_dir, wasm)
+    cmd = WASM2JS + [wasm, '--allow-asserts']
+    out = run_command(cmd)
+    fail_if_not_identical_to_file(out, asserts_expected_file)
+
+    cmd += ['--pedantic']
+    out = run_command(cmd)
+    fail_if_not_identical_to_file(out, traps_expected_file)
+
+
+def test_wasm2js():
+  print '\n[ checking wasm2js testcases... ]\n'
+  test_wasm2js_output()
+  test_asserts_output()
+
+
+if __name__ == "__main__":
+  test_wasm2js()