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3rdparty/shaderc/libshaderc_util/src/counting_includer_test.cc

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+// Copyright 2015 The Shaderc Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "libshaderc_util/counting_includer.h"
+
+#include <thread>
+#include <vector>
+
+#include <gmock/gmock.h>
+
+namespace {
+
+// A trivial implementation of CountingIncluder's virtual methods, so tests can
+// instantiate.
+class ConcreteCountingIncluder : public shaderc_util::CountingIncluder {
+ public:
+  using IncludeResult = glslang::TShader::Includer::IncludeResult;
+  ~ConcreteCountingIncluder() {
+    // Avoid leaks.
+    for (auto result : results_) {
+      release_delegate(result);
+    }
+  }
+  virtual IncludeResult* include_delegate(
+      const char* requested, const char* requestor, IncludeType,
+      size_t) override {
+    const char kError[] = "Unexpected #include";
+    results_.push_back(new IncludeResult{"", kError, strlen(kError), nullptr});
+    return results_.back();
+  }
+  virtual void release_delegate(IncludeResult* include_result) override {
+    delete include_result;
+  }
+
+ private:
+  // All the results we've returned so far.
+  std::vector<IncludeResult*> results_;
+};
+
+TEST(CountingIncluderTest, InitialCount) {
+  EXPECT_EQ(0, ConcreteCountingIncluder().num_include_directives());
+}
+
+TEST(CountingIncluderTest, OneIncludeLocal) {
+  ConcreteCountingIncluder includer;
+  includer.includeLocal("random file name", "from me", 0);
+  EXPECT_EQ(1, includer.num_include_directives());
+}
+
+TEST(CountingIncluderTest, TwoIncludesAnyIncludeType) {
+  ConcreteCountingIncluder includer;
+  includer.includeSystem("name1", "from me", 0);
+  includer.includeLocal("name2", "me", 0);
+  EXPECT_EQ(2, includer.num_include_directives());
+}
+
+TEST(CountingIncluderTest, ManyIncludes) {
+  ConcreteCountingIncluder includer;
+  for (int i = 0; i < 100; ++i) {
+    includer.includeLocal("filename", "from me", i);
+    includer.includeSystem("filename", "from me", i);
+  }
+  EXPECT_EQ(200, includer.num_include_directives());
+}
+
+#ifndef SHADERC_DISABLE_THREADED_TESTS
+TEST(CountingIncluderTest, ThreadedIncludes) {
+  ConcreteCountingIncluder includer;
+  std::thread t1(
+      [&includer]() { includer.includeLocal("name1", "me", 0); });
+  std::thread t2(
+      [&includer]() { includer.includeSystem("name2", "me", 1); });
+  std::thread t3(
+      [&includer]() { includer.includeLocal("name3", "me", 2); });
+  t1.join();
+  t2.join();
+  t3.join();
+  EXPECT_EQ(3, includer.num_include_directives());
+}
+#endif // SHADERC_DISABLE_THREADED_TESTS
+
+}  // anonymous namespace