1 files changed, 82 insertions, 0 deletions
diff --git a/liblog/tests/log_read_test.cpp b/liblog/tests/log_read_test.cpp
new file mode 100644
index 000000000..1be99aa80
--- /dev/null
+++ b/liblog/tests/log_read_test.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2013-2017 The Android Open Source Project
+ *
+ * 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 <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <string>
+
+#include <android-base/stringprintf.h>
+#include <android/log.h>  // minimal logging API
+#include <gtest/gtest.h>
+#include <log/log_properties.h>
+// Test the APIs in this standalone include file
+#include <log/log_read.h>
+// Do not use anything in log/log_time.h despite side effects of the above.
+#include <private/android_logger.h>
+
+TEST(liblog, android_logger_get_) {
+#ifdef __ANDROID__
+  // This test assumes the log buffers are filled with noise from
+  // normal operations. It will fail if done immediately after a
+  // logcat -c.
+  struct logger_list* logger_list =
+      android_logger_list_alloc(ANDROID_LOG_WRONLY, 0, 0);
+
+  for (int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
+    log_id_t id = static_cast<log_id_t>(i);
+    const char* name = android_log_id_to_name(id);
+    if (id != android_name_to_log_id(name)) {
+      continue;
+    }
+    fprintf(stderr, "log buffer %s\r", name);
+    struct logger* logger;
+    EXPECT_TRUE(NULL != (logger = android_logger_open(logger_list, id)));
+    EXPECT_EQ(id, android_logger_get_id(logger));
+    ssize_t get_log_size = android_logger_get_log_size(logger);
+    /* security buffer is allowed to be denied */
+    if (strcmp("security", name)) {
+      EXPECT_LT(0, get_log_size);
+      // crash buffer is allowed to be empty, that is actually healthy!
+      // kernel buffer is allowed to be empty on "user" builds
+      // stats buffer is allowed to be empty TEMPORARILY.
+      // TODO: remove stats buffer from here once we start to use it in
+      // framework (b/68266385).
+      EXPECT_LE(  // boolean 1 or 0 depending on expected content or empty
+          !!((strcmp("crash", name) != 0) &&
+             ((strcmp("kernel", name) != 0) ||
+              __android_logger_property_get_bool(
+                  "ro.logd.kernel", BOOL_DEFAULT_TRUE | BOOL_DEFAULT_FLAG_ENG |
+                                        BOOL_DEFAULT_FLAG_SVELTE)) &&
+             (strcmp("stats", name) != 0)),
+          android_logger_get_log_readable_size(logger));
+    } else {
+      EXPECT_NE(0, get_log_size);
+      if (get_log_size < 0) {
+        EXPECT_GT(0, android_logger_get_log_readable_size(logger));
+      } else {
+        EXPECT_LE(0, android_logger_get_log_readable_size(logger));
+      }
+    }
+    EXPECT_LT(0, android_logger_get_log_version(logger));
+  }
+
+  android_logger_list_close(logger_list);
+#else
+  GTEST_LOG_(INFO) << "This test does nothing.\n";
+#endif
+}