Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 698 insertions, 0 deletions

diff --git a/media/libcubeb/test/test_sanity.cpp b/media/libcubeb/test/test_sanity.cpp
new file mode 100644
index 0000000000..d681c502bb
--- /dev/null
+++ b/media/libcubeb/test/test_sanity.cpp
@@ -0,0 +1,698 @@
+/*
+ * Copyright © 2011 Mozilla Foundation
+ *
+ * This program is made available under an ISC-style license.  See the
+ * accompanying file LICENSE for details.
+ */
+#include "gtest/gtest.h"
+#if !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE 600
+#endif
+#include "cubeb/cubeb.h"
+#include <atomic>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+//#define ENABLE_NORMAL_LOG
+//#define ENABLE_VERBOSE_LOG
+#include "common.h"
+
+#define STREAM_RATE 44100
+#define STREAM_LATENCY 100 * STREAM_RATE / 1000
+#define STREAM_CHANNELS 1
+#define STREAM_LAYOUT CUBEB_LAYOUT_MONO
+#define STREAM_FORMAT CUBEB_SAMPLE_S16LE
+
+int is_windows_7()
+{
+#ifdef __MINGW32__
+  fprintf(stderr, "Warning: this test was built with MinGW.\n"
+         "MinGW does not contain necessary version checking infrastructure. Claiming to be Windows 7, even if we're not.\n");
+  return 1;
+#endif
+#if (defined(_WIN32) || defined(__WIN32__)) && ( !defined(__MINGW32__))
+  OSVERSIONINFOEX osvi;
+  DWORDLONG condition_mask = 0;
+
+  ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+  osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+
+  // NT 6.1 is Windows 7
+  osvi.dwMajorVersion = 6;
+  osvi.dwMinorVersion = 1;
+
+  VER_SET_CONDITION(condition_mask, VER_MAJORVERSION, VER_EQUAL);
+  VER_SET_CONDITION(condition_mask, VER_MINORVERSION, VER_GREATER_EQUAL);
+
+  return VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION, condition_mask);
+#else
+  return 0;
+#endif
+}
+
+static int dummy;
+static std::atomic<uint64_t> total_frames_written;
+static int delay_callback;
+
+static long
+test_data_callback(cubeb_stream * stm, void * user_ptr, const void * /*inputbuffer*/, void * outputbuffer, long nframes)
+{
+  EXPECT_TRUE(stm && user_ptr == &dummy && outputbuffer && nframes > 0);
+  assert(outputbuffer);
+  memset(outputbuffer, 0, nframes * sizeof(short));
+
+  total_frames_written += nframes;
+  if (delay_callback) {
+    delay(10);
+  }
+  return nframes;
+}
+
+void
+test_state_callback(cubeb_stream * /*stm*/, void * /*user_ptr*/, cubeb_state /*state*/)
+{
+}
+
+TEST(cubeb, init_destroy_context)
+{
+  int r;
+  cubeb * ctx;
+  char const* backend_id;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  backend_id = cubeb_get_backend_id(ctx);
+  ASSERT_TRUE(backend_id);
+
+  fprintf(stderr, "Backend: %s\n", backend_id);
+
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, init_destroy_multiple_contexts)
+{
+  size_t i;
+  int r;
+  cubeb * ctx[4];
+  int order[4] = {2, 0, 3, 1};
+  ASSERT_EQ(ARRAY_LENGTH(ctx), ARRAY_LENGTH(order));
+
+  for (i = 0; i < ARRAY_LENGTH(ctx); ++i) {
+    r = common_init(&ctx[i], NULL);
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_NE(ctx[i], nullptr);
+  }
+
+  /* destroy in a different order */
+  for (i = 0; i < ARRAY_LENGTH(ctx); ++i) {
+    cubeb_destroy(ctx[order[i]]);
+  }
+}
+
+TEST(cubeb, context_variables)
+{
+  int r;
+  cubeb * ctx;
+  uint32_t value;
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_context_variables");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.channels = STREAM_CHANNELS;
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_get_min_latency(ctx, &params, &value);
+  ASSERT_TRUE(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
+  if (r == CUBEB_OK) {
+    ASSERT_TRUE(value > 0);
+  }
+
+  r = cubeb_get_preferred_sample_rate(ctx, &value);
+  ASSERT_TRUE(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
+  if (r == CUBEB_OK) {
+    ASSERT_TRUE(value > 0);
+  }
+
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, init_destroy_stream)
+{
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_data_callback, test_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, init_destroy_multiple_streams)
+{
+  size_t i;
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream[8];
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+    r = cubeb_stream_init(ctx, &stream[i], "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                          test_data_callback, test_state_callback, &dummy);
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_NE(stream[i], nullptr);
+  }
+
+  for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+    cubeb_stream_destroy(stream[i]);
+  }
+
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, configure_stream)
+{
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = 2;
+  params.layout = CUBEB_LAYOUT_STEREO;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_data_callback, test_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  r = cubeb_stream_set_volume(stream, 1.0f);
+  ASSERT_TRUE(r == 0 || r == CUBEB_ERROR_NOT_SUPPORTED);
+
+  r = cubeb_stream_set_name(stream, "test 2");
+  ASSERT_TRUE(r == 0 || r == CUBEB_ERROR_NOT_SUPPORTED);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, configure_stream_undefined_layout)
+{
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = 2;
+  params.layout = CUBEB_LAYOUT_UNDEFINED;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_data_callback, test_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  r = cubeb_stream_start(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  delay(100);
+
+  r = cubeb_stream_stop(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+}
+
+static void
+test_init_start_stop_destroy_multiple_streams(int early, int delay_ms)
+{
+  size_t i;
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream[8];
+  cubeb_stream_params params;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+    r = cubeb_stream_init(ctx, &stream[i], "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                          test_data_callback, test_state_callback, &dummy);
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_NE(stream[i], nullptr);
+    if (early) {
+      r = cubeb_stream_start(stream[i]);
+      ASSERT_EQ(r, CUBEB_OK);
+    }
+  }
+
+  if (!early) {
+    for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+      r = cubeb_stream_start(stream[i]);
+      ASSERT_EQ(r, CUBEB_OK);
+    }
+  }
+
+  if (delay_ms) {
+    delay(delay_ms);
+  }
+
+  if (!early) {
+    for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+      r = cubeb_stream_stop(stream[i]);
+      ASSERT_EQ(r, CUBEB_OK);
+    }
+  }
+
+  for (i = 0; i < ARRAY_LENGTH(stream); ++i) {
+    if (early) {
+      r = cubeb_stream_stop(stream[i]);
+      ASSERT_EQ(r, CUBEB_OK);
+    }
+    cubeb_stream_destroy(stream[i]);
+  }
+
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, init_start_stop_destroy_multiple_streams)
+{
+  /* Sometimes, when using WASAPI on windows 7 (vista and 8 are okay), and
+   * calling Activate a lot on an AudioClient, 0x800700b7 is returned. This is
+   * the HRESULT value for "Cannot create a file when that file already exists",
+   * and is not documented as a possible return value for this call. Hence, we
+   * try to limit the number of streams we create in this test. */
+  if (!is_windows_7()) {
+    delay_callback = 0;
+    test_init_start_stop_destroy_multiple_streams(0, 0);
+    test_init_start_stop_destroy_multiple_streams(1, 0);
+    test_init_start_stop_destroy_multiple_streams(0, 150);
+    test_init_start_stop_destroy_multiple_streams(1, 150);
+    delay_callback = 1;
+    test_init_start_stop_destroy_multiple_streams(0, 0);
+    test_init_start_stop_destroy_multiple_streams(1, 0);
+    test_init_start_stop_destroy_multiple_streams(0, 150);
+    test_init_start_stop_destroy_multiple_streams(1, 150);
+  }
+}
+
+TEST(cubeb, init_destroy_multiple_contexts_and_streams)
+{
+  size_t i, j;
+  int r;
+  cubeb * ctx[2];
+  cubeb_stream * stream[8];
+  cubeb_stream_params params;
+  size_t streams_per_ctx = ARRAY_LENGTH(stream) / ARRAY_LENGTH(ctx);
+  ASSERT_EQ(ARRAY_LENGTH(ctx) * streams_per_ctx, ARRAY_LENGTH(stream));
+
+  /* Sometimes, when using WASAPI on windows 7 (vista and 8 are okay), and
+   * calling Activate a lot on an AudioClient, 0x800700b7 is returned. This is
+   * the HRESULT value for "Cannot create a file when that file already exists",
+   * and is not documented as a possible return value for this call. Hence, we
+   * try to limit the number of streams we create in this test. */
+  if (is_windows_7())
+    return;
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  for (i = 0; i < ARRAY_LENGTH(ctx); ++i) {
+    r = common_init(&ctx[i], "test_sanity");
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_NE(ctx[i], nullptr);
+
+    for (j = 0; j < streams_per_ctx; ++j) {
+      r = cubeb_stream_init(ctx[i], &stream[i * streams_per_ctx + j], "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                            test_data_callback, test_state_callback, &dummy);
+      ASSERT_EQ(r, CUBEB_OK);
+      ASSERT_NE(stream[i * streams_per_ctx + j], nullptr);
+    }
+  }
+
+  for (i = 0; i < ARRAY_LENGTH(ctx); ++i) {
+    for (j = 0; j < streams_per_ctx; ++j) {
+      cubeb_stream_destroy(stream[i * streams_per_ctx + j]);
+    }
+    cubeb_destroy(ctx[i]);
+  }
+}
+
+TEST(cubeb, basic_stream_operations)
+{
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+  uint64_t position;
+  uint32_t latency;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_data_callback, test_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  /* position and latency before stream has started */
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_EQ(position, 0u);
+
+  r = cubeb_stream_get_latency(stream, &latency);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  r = cubeb_stream_start(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  /* position and latency after while stream running */
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  r = cubeb_stream_get_latency(stream, &latency);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  r = cubeb_stream_stop(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  /* position and latency after stream has stopped */
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  r = cubeb_stream_get_latency(stream, &latency);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+}
+
+TEST(cubeb, stream_position)
+{
+  size_t i;
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+  uint64_t position, last_position;
+
+  total_frames_written = 0;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_data_callback, test_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  /* stream position should not advance before starting playback */
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_EQ(position, 0u);
+
+  delay(500);
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_EQ(position, 0u);
+
+  /* stream position should advance during playback */
+  r = cubeb_stream_start(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  /* XXX let start happen */
+  delay(500);
+
+  /* stream should have prefilled */
+  ASSERT_TRUE(total_frames_written.load() > 0);
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  last_position = position;
+
+  delay(500);
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_GE(position, last_position);
+  last_position = position;
+
+  /* stream position should not exceed total frames written */
+  for (i = 0; i < 5; ++i) {
+    r = cubeb_stream_get_position(stream, &position);
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_GE(position, last_position);
+    ASSERT_LE(position, total_frames_written.load());
+    last_position = position;
+    delay(500);
+  }
+
+  /* test that the position is valid even when starting and
+   * stopping the stream.  */
+  for (i = 0; i < 5; ++i) {
+    r = cubeb_stream_stop(stream);
+    ASSERT_EQ(r, CUBEB_OK);
+    r = cubeb_stream_get_position(stream, &position);
+    ASSERT_EQ(r, CUBEB_OK);
+    ASSERT_TRUE(last_position < position);
+    last_position = position;
+    delay(500);
+    r = cubeb_stream_start(stream);
+    ASSERT_EQ(r, CUBEB_OK);
+    delay(500);
+  }
+
+  ASSERT_NE(last_position, 0u);
+
+  /* stream position should not advance after stopping playback */
+  r = cubeb_stream_stop(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  /* XXX allow stream to settle */
+  delay(500);
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  last_position = position;
+
+  delay(500);
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_EQ(position, last_position);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+}
+
+static std::atomic<int> do_drain;
+static std::atomic<int> got_drain;
+
+static long
+test_drain_data_callback(cubeb_stream * stm, void * user_ptr, const void * /*inputbuffer*/, void * outputbuffer, long nframes)
+{
+  EXPECT_TRUE(stm && user_ptr == &dummy && outputbuffer && nframes > 0);
+  assert(outputbuffer);
+  if (do_drain == 1) {
+    do_drain = 2;
+    return 0;
+  }
+  /* once drain has started, callback must never be called again */
+  EXPECT_TRUE(do_drain != 2);
+  memset(outputbuffer, 0, nframes * sizeof(short));
+  total_frames_written += nframes;
+  return nframes;
+}
+
+void
+test_drain_state_callback(cubeb_stream * /*stm*/, void * /*user_ptr*/, cubeb_state state)
+{
+  if (state == CUBEB_STATE_DRAINED) {
+    ASSERT_TRUE(!got_drain);
+    got_drain = 1;
+  }
+}
+
+TEST(cubeb, drain)
+{
+  int r;
+  cubeb * ctx;
+  cubeb_stream * stream;
+  cubeb_stream_params params;
+  uint64_t position;
+
+  delay_callback = 0;
+  total_frames_written = 0;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  params.format = STREAM_FORMAT;
+  params.rate = STREAM_RATE;
+  params.channels = STREAM_CHANNELS;
+  params.layout = STREAM_LAYOUT;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  r = cubeb_stream_init(ctx, &stream, "test", NULL, NULL, NULL, &params, STREAM_LATENCY,
+                        test_drain_data_callback, test_drain_state_callback, &dummy);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(stream, nullptr);
+
+  r = cubeb_stream_start(stream);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  delay(5000);
+
+  do_drain = 1;
+
+  for (;;) {
+    r = cubeb_stream_get_position(stream, &position);
+    ASSERT_EQ(r, CUBEB_OK);
+    if (got_drain) {
+      break;
+    } else {
+      ASSERT_LE(position, total_frames_written.load());
+    }
+    delay(500);
+  }
+
+  r = cubeb_stream_get_position(stream, &position);
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_TRUE(got_drain);
+
+  // Really, we should be able to rely on position reaching our final written frame, but
+  // for now let's make sure it doesn't continue beyond that point.
+  //ASSERT_LE(position, total_frames_written.load());
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+
+  got_drain = 0;
+  do_drain = 0;
+}
+
+TEST(cubeb, DISABLED_eos_during_prefill)
+{
+  // This test needs to be implemented.
+}
+
+TEST(cubeb, DISABLED_stream_destroy_pending_drain)
+{
+  // This test needs to be implemented.
+}
+
+TEST(cubeb, stable_devid)
+{
+  /* Test that the devid field of cubeb_device_info is stable
+   * (ie. compares equal) over two invocations of
+   * cubeb_enumerate_devices(). */
+
+  int r;
+  cubeb * ctx;
+  cubeb_device_collection first;
+  cubeb_device_collection second;
+  cubeb_device_type all_devices =
+    (cubeb_device_type) (CUBEB_DEVICE_TYPE_INPUT | CUBEB_DEVICE_TYPE_OUTPUT);
+  size_t n;
+
+  r = common_init(&ctx, "test_sanity");
+  ASSERT_EQ(r, CUBEB_OK);
+  ASSERT_NE(ctx, nullptr);
+
+  r = cubeb_enumerate_devices(ctx, all_devices, &first);
+  if (r == CUBEB_ERROR_NOT_SUPPORTED)
+    return;
+
+  ASSERT_EQ(r, CUBEB_OK);
+
+  r = cubeb_enumerate_devices(ctx, all_devices, &second);
+  ASSERT_EQ(r, CUBEB_OK);
+
+  ASSERT_EQ(first.count, second.count);
+  for (n = 0; n < first.count; n++) {
+    ASSERT_EQ(first.device[n].devid, second.device[n].devid);
+  }
+
+  r = cubeb_device_collection_destroy(ctx, &first);
+  ASSERT_EQ(r, CUBEB_OK);
+  r = cubeb_device_collection_destroy(ctx, &second);
+  ASSERT_EQ(r, CUBEB_OK);
+  cubeb_destroy(ctx);
+}
+
+#undef STREAM_RATE
+#undef STREAM_LATENCY
+#undef STREAM_CHANNELS
+#undef STREAM_LAYOUT
+#undef STREAM_FORMAT