Add unit test suites (#3490)

tests/unit/runtime-common/wasm_exec_env_test.cc

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#include "test_helper.h"
+#include "gtest/gtest.h"
+
+#include "wasm_exec_env.h"
+
+class wasm_exec_env_test_suite : public testing::Test
+{
+  protected:
+    // You should make the members protected s.t. they can be
+    // accessed from sub-classes.
+
+    // virtual void SetUp() will be called before each test is run.  You
+    // should define it if you need to initialize the varaibles.
+    // Otherwise, this can be skipped.
+    virtual void SetUp() {}
+
+    // virtual void TearDown() will be called after each test is run.
+    // You should define it if there is cleanup work to do.  Otherwise,
+    // you don't have to provide it.
+    //
+    virtual void TearDown() {}
+};
+
+TEST_F(wasm_exec_env_test_suite, wasm_exec_env_create)
+{
+    EXPECT_EQ(nullptr, wasm_exec_env_create(nullptr, 0));
+}
+
+TEST_F(wasm_exec_env_test_suite, wasm_exec_env_create_internal)
+{
+    EXPECT_EQ(nullptr, wasm_exec_env_create_internal(nullptr, UINT32_MAX));
+}
+
+TEST_F(wasm_exec_env_test_suite, wasm_exec_env_pop_jmpbuf)
+{
+    WASMExecEnv exec_env;
+
+    exec_env.jmpbuf_stack_top = nullptr;
+    EXPECT_EQ(nullptr, wasm_exec_env_pop_jmpbuf(&exec_env));
+}