From a084bf5f8a35c8bb7e94a441b85d103306b47b14 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Bylica?= <chfast@gmail.com>
Date: Mon, 1 Feb 2021 21:20:32 +0100
Subject: [PATCH] test: Add WASI unit tests

---
 test/unittests/CMakeLists.txt |  3 ++-
 test/unittests/wasi_test.cpp  | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 test/unittests/wasi_test.cpp

diff --git a/test/unittests/CMakeLists.txt b/test/unittests/CMakeLists.txt
index 19720d47c5..5fc0689875 100644
--- a/test/unittests/CMakeLists.txt
+++ b/test/unittests/CMakeLists.txt
@@ -5,7 +5,7 @@
 include(GoogleTest)
 
 add_executable(fizzy-unittests)
-target_link_libraries(fizzy-unittests PRIVATE fizzy::fizzy-internal fizzy::test-utils GTest::gtest_main GTest::gmock)
+target_link_libraries(fizzy-unittests PRIVATE fizzy::fizzy-internal fizzy::wasi fizzy::test-utils GTest::gtest_main GTest::gmock)
 
 target_sources(
     fizzy-unittests PRIVATE
@@ -40,6 +40,7 @@ target_sources(
     validation_stack_type_test.cpp
     validation_test.cpp
     value_test.cpp
+    wasi_test.cpp
     wasm_engine_test.cpp
 )
 
diff --git a/test/unittests/wasi_test.cpp b/test/unittests/wasi_test.cpp
new file mode 100644
index 0000000000..71ece6501b
--- /dev/null
+++ b/test/unittests/wasi_test.cpp
@@ -0,0 +1,20 @@
+// Fizzy: A fast WebAssembly interpreter
+// Copyright 2020 The Fizzy Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+#include "wasi.hpp"
+#include <gtest/gtest.h>
+#include <test/utils/hex.hpp>
+#include <sstream>
+
+using namespace fizzy;
+using namespace fizzy::test;
+
+TEST(wasi, no_file)
+{
+    const char* args[]{"ABC"};
+
+    std::ostringstream err;
+    EXPECT_FALSE(wasi::run(std::size(args), args, err));
+    EXPECT_EQ(err.str(), "File does not exists or is irregular: ABC\n");
+}