Merge "Use a pipe instead of tmp for debugDump tests."

#include <type_traits>

#include <vector>

#include <fcntl.h>

#include <unistd.h>

#include <VtsHalHidlTargetTestBase.h>

#include <android-base/logging.h>

template <class DebugDump>

static void testDebugDump(DebugDump debugDump) {

    // Dump in a temporary file

    // Note that SELinux must be deactivate for this test to work

    FILE* file = tmpfile();

    ASSERT_NE(nullptr, file) << errno;

    // File descriptors to our pipe. fds[0] corresponds to the read end and

    // fds[1] to the write end.

    int fds[2];

    ASSERT_EQ(0, pipe2(fds, O_NONBLOCK)) << errno;

    // Wrap the temporary file file descriptor in a native handle

    auto* nativeHandle = native_handle_create(1, 0);

    ASSERT_NE(nullptr, nativeHandle);

    nativeHandle->data[0] = fileno(file);

    nativeHandle->data[0] = fds[1];

    // Wrap this native handle in a hidl handle

    hidl_handle handle;

    handle.setTo(nativeHandle, true /*take ownership*/);

    handle.setTo(nativeHandle, false /*take ownership*/);

    ASSERT_OK(debugDump(handle));

    // TODO: debugDump does not return a Result.

    // This mean that the hal can not report that it not implementing the

    // function.

    rewind(file);  // can not fail

    char buff;

    if (fread(&buff, sizeof(buff), 1, file) != 1) {

    if (read(fds[0], &buff, 1) != 1) {

        doc::note("debugDump does not seem implemented");

    }

    EXPECT_EQ(0, fclose(file)) << errno;

    EXPECT_EQ(0, close(fds[0])) << errno;

    EXPECT_EQ(0, close(fds[1])) << errno;

}

TEST_F(AudioPrimaryHidlTest, DebugDump) {