[libc][NFC] Correct test header inclusion, license (#114604)

Some tests were including LibcTest.h directly. Instead you should
include Test.h which does proper indirection for other test frameworks
we support (zxtest, gtest). Also added some license headers to tests
that were missing them.

Author: michaelrj-google

libc/test/src/__support/OSUtil/linux/vdso_test.cpp

@@ -19,7 +19,6 @@
 #include "src/signal/raise.h"
 #include "src/signal/sigaction.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
 #include "test/UnitTest/Test.h"
 #include <linux/time_types.h>
 #include <sys/syscall.h>

libc/test/src/__support/integer_literals_test.cpp

@@ -1,4 +1,3 @@
-
 //===-- Unittests for user defined integer literals -----------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

libc/test/src/__support/str_to_double_test.cpp

@@ -1,3 +1,11 @@
+//===-- Unittests for str_to_float<double> --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
 #include "src/__support/macros/config.h"
 #include "str_to_fp_test.h"
 

libc/test/src/__support/str_to_float_test.cpp

@@ -1,3 +1,11 @@
+//===-- Unittests for str_to_float<float> ---------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
 #include "src/__support/macros/config.h"
 #include "str_to_fp_test.h"
 

libc/test/src/__support/str_to_long_double_test.cpp

@@ -1,3 +1,11 @@
+//===-- Unittests for str_to_float<long double> ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
 #include "src/__support/macros/config.h"
 #include "str_to_fp_test.h"
 

libc/test/src/sys/mman/linux/mincore_test.cpp

@@ -16,7 +16,6 @@
 #include "src/sys/mman/munmap.h"
 #include "src/unistd/sysconf.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
 #include "test/UnitTest/Test.h"
 
 #include <sys/mman.h>

libc/test/src/sys/mman/linux/mlock_test.cpp

@@ -20,7 +20,6 @@
 #include "src/sys/resource/getrlimit.h"
 #include "src/unistd/sysconf.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
 #include "test/UnitTest/Test.h"
 
 #include <linux/capability.h>

libc/test/src/sys/mman/linux/msync_test.cpp

@@ -14,7 +14,6 @@
 #include "src/sys/mman/munmap.h"
 #include "src/unistd/sysconf.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
 #include "test/UnitTest/Test.h"
 
 using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;

libc/test/src/sys/mman/linux/shm_test.cpp

@@ -16,7 +16,7 @@
 #include "src/unistd/close.h"
 #include "src/unistd/ftruncate.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
+#include "test/UnitTest/Test.h"
 #include <sys/syscall.h>
 
 using namespace LIBC_NAMESPACE::testing::ErrnoSetterMatcher;

libc/test/src/unistd/access_test.cpp

@@ -12,7 +12,6 @@
 #include "src/unistd/close.h"
 #include "src/unistd/unlink.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include "test/UnitTest/LibcTest.h"
 #include "test/UnitTest/Test.h"
 
 #include <sys/stat.h>