Add tests for the cpp interface.

test/CMakeLists.txt

@@ -132,6 +132,12 @@ if (NOT ${SPIRV_SKIP_EXECUTABLES})
       TARGET UnitSPIRV
       SRCS ${TEST_SOURCES}
       LIBS ${SPIRV_TOOLS})
+
+    add_spvtools_unittest(
+      TARGET cpp_interface
+      SRCS cpp_interface.cpp
+      LIBS SPIRV-Tools-opt ${SPIRV_TOOLS})
+
     add_subdirectory(opt)
   else()
     message(STATUS "Did not find googletest, tests will not be built."

test/cpp_interface.cpp

@@ -0,0 +1,70 @@
+// Copyright (c) 2016 Google Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and/or associated documentation files (the
+// "Materials"), to deal in the Materials without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Materials, and to
+// permit persons to whom the Materials are furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Materials.
+//
+// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
+// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
+// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
+//    https://www.khronos.org/registry/
+//
+// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+
+#include <gtest/gtest.h>
+
+#include "opt/libspirv.hpp"
+
+namespace {
+
+using namespace spvtools;
+
+TEST(CppInterface, SuccessfulRoundTrip) {
+  const std::string input_text = "%2 = OpSizeOf %1 %3\n";
+  SpvTools t(SPV_ENV_UNIVERSAL_1_1);
+
+  std::vector<uint32_t> binary;
+  EXPECT_EQ(SPV_SUCCESS, t.Assemble(input_text, &binary));
+  EXPECT_TRUE(binary.size() > 5u);
+  EXPECT_EQ(SpvMagicNumber, binary[0]);
+  EXPECT_EQ(SpvVersion, binary[1]);
+
+  std::string output_text;
+  EXPECT_EQ(SPV_SUCCESS, t.Disassemble(binary, &output_text));
+  EXPECT_EQ(input_text, output_text);
+}
+
+TEST(CppInterface, AssembleWithWrongTargetEnv) {
+  const std::string input_text = "%r = OpSizeOf %type %pointer";
+  SpvTools t(SPV_ENV_UNIVERSAL_1_0);
+
+  std::vector<uint32_t> binary;
+  EXPECT_EQ(SPV_ERROR_INVALID_TEXT, t.Assemble(input_text, &binary));
+}
+
+TEST(CppInterface, DisassembleWithWrongTargetEnv) {
+  const std::string input_text = "%r = OpSizeOf %type %pointer";
+  SpvTools t11(SPV_ENV_UNIVERSAL_1_1);
+  SpvTools t10(SPV_ENV_UNIVERSAL_1_0);
+
+  std::vector<uint32_t> binary;
+  EXPECT_EQ(SPV_SUCCESS, t11.Assemble(input_text, &binary));
+
+  std::string output_text;
+  EXPECT_EQ(SPV_ERROR_INVALID_BINARY, t10.Disassemble(binary, &output_text));
+}
+
+}  // anonymous namespace