1 files changed, 20 insertions, 0 deletions
diff --git a/test/unit/test_symbolmap.py b/test/unit/test_symbolmap.py
new file mode 100644
index 000000000..59ce1847e
--- /dev/null
+++ b/test/unit/test_symbolmap.py
@@ -0,0 +1,20 @@
+from scripts.test import shared
+from . import utils
+
+
+class SymbolMapTest(utils.BinaryenTestCase):
+    def test_symbolmap(self):
+        input_wasm = self.input_path('hello_world.wat')
+        # write the symbol map to a file
+        args = [input_wasm, '--symbolmap=out.symbols']
+        shared.run_process(shared.WASM_OPT + args)
+        with open('out.symbols') as f:
+            file_output = f.read()
+        # write the symbol map to stdout
+        args = [input_wasm, '--symbolmap']
+        stdout_output = shared.run_process(shared.WASM_OPT + args,
+                                           capture_output=True).stdout
+        # ignore whitespace in the comparison as on windows stdout gets an \r
+        self.assertEqual(file_output.strip(), stdout_output.strip())
+        # the wat contains a single function "add"
+        self.assertIn('0:add', file_output)