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-rw-r--r--unittests/Support/CommandLineTest.cpp48
1 files changed, 48 insertions, 0 deletions
diff --git a/unittests/Support/CommandLineTest.cpp b/unittests/Support/CommandLineTest.cpp
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+++ b/unittests/Support/CommandLineTest.cpp
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+//===- llvm/unittest/Support/CommandLineTest.cpp - CommandLine tests ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/CommandLine.h"
+
+#include "gtest/gtest.h"
+
+#include <string>
+#include <stdlib.h>
+
+using namespace llvm;
+
+namespace {
+
+class TempEnvVar {
+ public:
+ TempEnvVar(const char *name, const char *value)
+ : name(name) {
+ const char *old_value = getenv(name);
+ EXPECT_EQ(NULL, old_value) << old_value;
+ setenv(name, value, true);
+ }
+
+ ~TempEnvVar() {
+ unsetenv(name);
+ }
+
+ private:
+ const char *const name;
+};
+
+const char test_env_var[] = "LLVM_TEST_COMMAND_LINE_FLAGS";
+
+cl::opt<std::string> EnvironmentTestOption("env-test-opt");
+TEST(CommandLineTest, ParseEnvironment) {
+ TempEnvVar TEV(test_env_var, "-env-test-opt=hello");
+ EXPECT_EQ("", EnvironmentTestOption);
+ cl::ParseEnvironmentOptions("CommandLineTest", test_env_var);
+ EXPECT_EQ("hello", EnvironmentTestOption);
+}
+
+} // anonymous namespace