1 files changed, 111 insertions, 0 deletions
diff --git a/chrome/browser/chromeos/external_metrics_unittest.cc b/chrome/browser/chromeos/external_metrics_unittest.cc
new file mode 100644
index 0000000..b484736
--- /dev/null
+++ b/chrome/browser/chromeos/external_metrics_unittest.cc
@@ -0,0 +1,111 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <errno.h>
+#include <sys/file.h>
+
+#include "base/basictypes.h"
+#include "chrome/browser/chromeos/external_metrics.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {  // Need this because of the FRIEND_TEST
+
+class ExternalMetricsTest : public testing::Test {
+};
+
+// Because the metrics service is not essential, errors will not cause the
+// program to terminate.  However, the errors produce logs.
+
+#define MAXLENGTH ExternalMetrics::kMetricsMessageMaxLength
+
+static void SendMessage(const char* path, const char* name, const char* value) {
+  int fd = open(path, O_CREAT | O_APPEND | O_WRONLY, 0666);
+  int32 l = strlen(name) + strlen(value) + 2 + sizeof(l);
+  write(fd, &l, sizeof(l));
+  write(fd, name, strlen(name) + 1);
+  write(fd, value, strlen(value) + 1);
+  close(fd);
+}
+
+const char* received_name = NULL;
+const char* received_value = NULL;
+int received_count = 0;
+
+static void ReceiveMessage(const char* name, const char* value) {
+  received_name = name;
+  received_value = value;
+  received_count++;
+}
+
+static void CheckMessage(const char* name, const char* value, int count) {
+  EXPECT_EQ(0, strcmp(received_name, name));
+  EXPECT_EQ(0, strcmp(received_value, value));
+  EXPECT_EQ(received_count, count);
+}
+
+TEST(ExternalMetricsTest, ParseExternalMetricsFile) {
+  struct {
+    const char* name;
+    const char* value;
+  } pairs[] = {
+    {"BootTime", "9500"},
+    {"BootTime", "10000"},
+    {"BootTime", "9200"},
+  };
+  int npairs = ARRAYSIZE_UNSAFE(pairs);
+  int32 i;
+  const char* path = "/tmp/.chromeos-metrics";
+
+  chromeos::ExternalMetrics* external_metrics = new chromeos::ExternalMetrics();
+  external_metrics->SetRecorder(&ReceiveMessage);
+
+  EXPECT_TRUE(unlink(path) == 0 || errno == ENOENT);
+
+  // Send a few valid messages.
+  for (i = 0; i < npairs; i++) {
+    SendMessage(path, pairs[i].name, pairs[i].value);
+  }
+
+  external_metrics->CollectEvents();
+  CheckMessage(pairs[npairs-1].name, pairs[npairs-1].value, npairs);
+
+  // Send a message that's too large.
+  char b[MAXLENGTH + 100];
+  for (i = 0; i < MAXLENGTH + 99; i++) {
+    b[i] = 'x';
+  }
+  b[i] = '\0';
+  SendMessage(path, b, "yyy");
+  external_metrics->CollectEvents();
+  EXPECT_EQ(received_count, npairs);
+
+  // Send a malformed message (first string is not null-terminated).
+  i = 100 + sizeof(i);
+  int fd = open(path, O_CREAT | O_WRONLY);
+  EXPECT_GT(fd, 0);
+  EXPECT_EQ(write(fd, &i, sizeof(i)), static_cast<int>(sizeof(i)));
+  EXPECT_EQ(write(fd, b, i), i);
+  EXPECT_EQ(close(fd), 0);
+
+  external_metrics->CollectEvents();
+  EXPECT_EQ(received_count, npairs);
+
+  // Send a malformed message (second string is not null-terminated).
+  b[50] = '\0';
+  fd = open(path, O_CREAT | O_WRONLY);
+  EXPECT_GT(fd, 0);
+  EXPECT_EQ(write(fd, &i, sizeof(i)), static_cast<int>(sizeof(i)));
+  EXPECT_EQ(write(fd, b, i), i);
+  EXPECT_EQ(close(fd), 0);
+
+  external_metrics->CollectEvents();
+  EXPECT_EQ(received_count, npairs);
+
+  // Check that we survive when file doesn't exist.
+  EXPECT_EQ(unlink(path), 0);
+  external_metrics->CollectEvents();
+  EXPECT_EQ(received_count, npairs);
+}
+
+}  // namespace chromeos