Get libbase tests working on Windows.

Tests using files from /proc still fail on Windows (obviously), but
all tests are passing when run in Wine.

Change-Id: Ie4c3ba65b642202f8fcaec73332a53bee6115fba

base/file_test.cpp

@@ -55,6 +55,9 @@ TEST(file, WriteStringToFile) {
   EXPECT_EQ("abc", s);
 }
 
+// WriteStringToFile2 is explicitly for setting Unix permissions, which make no
+// sense on Windows.
+#if !defined(_WIN32)
 TEST(file, WriteStringToFile2) {
   TemporaryFile tf;
   ASSERT_TRUE(tf.fd != -1);
@@ -71,6 +74,7 @@ TEST(file, WriteStringToFile2) {
     << strerror(errno);
   EXPECT_EQ("abc", s);
 }
+#endif
 
 TEST(file, WriteStringToFd) {
   TemporaryFile tf;

base/stringprintf_test.cpp

@@ -20,11 +20,14 @@
 
 #include <string>
 
+// The z size sepcifier isn't supported on Windows, so this test isn't useful.
+#if !defined(_WIN32)
 TEST(StringPrintfTest, HexSizeT) {
   size_t size = 0x00107e59;
   EXPECT_EQ("00107e59", android::base::StringPrintf("%08zx", size));
   EXPECT_EQ("0x00107e59", android::base::StringPrintf("0x%08zx", size));
 }
+#endif
 
 TEST(StringPrintfTest, StringAppendF) {
   std::string s("a");

base/test_main.cpp

@@ -20,6 +20,11 @@
 
 int main(int argc, char** argv) {
   ::testing::InitGoogleTest(&argc, argv);
+
+  // No logging on Windows yet.
+#if !defined(_WIN32)
   android::base::InitLogging(argv, android::base::StderrLogger);
+#endif
+
   return RUN_ALL_TESTS();
 }

base/test_utils.cpp

@@ -16,15 +16,26 @@
 
 #include "test_utils.h"
 
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
+#if defined(_WIN32)
+#include <windows.h>
+#endif
+
 TemporaryFile::TemporaryFile() {
+#if defined(__ANDROID__)
   init("/data/local/tmp");
-  if (fd == -1) {
-    init("/tmp");
-  }
+#elif defined(_WIN32)
+  char wd[MAX_PATH] = {};
+  _getcwd(wd, sizeof(wd));
+  init(wd);
+#else
+  init("/tmp");
+#endif
 }
 
 TemporaryFile::~TemporaryFile() {
@@ -34,5 +45,15 @@ TemporaryFile::~TemporaryFile() {
 
 void TemporaryFile::init(const char* tmp_dir) {
   snprintf(filename, sizeof(filename), "%s/TemporaryFile-XXXXXX", tmp_dir);
+#if !defined(_WIN32)
   fd = mkstemp(filename);
+#else
+  // Windows doesn't have mkstemp, and tmpfile creates the file in the root
+  // directory, requiring root (?!) permissions. We have to settle for mktemp.
+  if (mktemp(filename) == nullptr) {
+    abort();
+  }
+
+  fd = open(filename, O_RDWR | O_NOINHERIT | O_CREAT, _S_IREAD | _S_IWRITE);
+#endif
 }