Makefile

@@ -1,8 +1,19 @@
+WABT_DIR := /home/johan/Sources/github.com/WebAssembly/wabt
+
+WAT2WASM := $(WABT_DIR)/bin/wat2wasm
+WASM2C := $(WABT_DIR)/bin/wasm2c
+
 %.wat: %.py py2wasm/*.py
 	python3.8 -m py2wasm $< $@
 
 %.wasm: %.wat
-	wat2wasm $^ -o $@
+	$(WAT2WASM) $^ -o $@
+
+%.c: %.wasm
+	$(WASM2C) $^ -o $@
+
+# %.exe: %.c
+# 	cc $^ -o $@ -I $(WABT_DIR)/wasm2c
 
 server:
 	python3.8 -m http.server

tests/integration/test_helper.py

@@ -0,0 +1,33 @@
+import io
+
+import pytest
+
+from pywasm import binary
+from pywasm import Runtime
+
+from .helpers import wat2wasm
+
+@pytest.mark.parametrize('size,offset,output', [
+    ('32', 0,         0x3020100),
+    ('32', 1,         0x4030201),
+    ('64', 0, 0x706050403020100),
+    ('64', 2, 0x908070605040302),
+])
+def test_i32_64_load(size, offset, output):
+    code_wat = f"""
+  (module
+    (memory 1)
+     (data (memory 0) (i32.const 0) "\\00\\01\\02\\03\\04\\05\\06\\07\\08\\09\\10")
+
+    (func (export "testEntry") (result i{size})
+      i32.const {offset}
+      i{size}.load
+      return ))
+"""
+    code_wasm = wat2wasm(code_wat)
+    module = binary.Module.from_reader(io.BytesIO(code_wasm))
+
+    runtime = Runtime(module, {}, {})
+
+    out_put = runtime.exec('testEntry', [])
+    assert output == out_put