Skip a couple more tests when a backend can't use audio input

test/test_duplex.cpp

@@ -204,15 +204,17 @@ TEST(cubeb, duplex_collection_change_no_unregister)
 
   r = common_init(&ctx, "Cubeb duplex example with collection change");
   ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
-  std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
-      ctx, [](cubeb * p) noexcept { EXPECT_DEATH(cubeb_destroy(p), ""); });
 
   /* This test needs an available input device, skip it if this host does not
    * have one. */
   if (!can_run_audio_input_test(ctx)) {
+    cubeb_destroy(ctx);
     return;
   }
 
+  std::unique_ptr<cubeb, decltype(&cubeb_destroy)> cleanup_cubeb_at_exit(
+      ctx, [](cubeb * p) noexcept { EXPECT_DEATH(cubeb_destroy(p), ""); });
+
   duplex_collection_change_impl(ctx);
 }
 

test/test_loopback.cpp

@@ -346,6 +346,10 @@ void run_loopback_separate_streams_test(bool is_float)
   std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
     cleanup_cubeb_at_exit(ctx, cubeb_destroy);
 
+  if (!can_run_audio_input_test(ctx)) {
+    return;
+  }
+
   input_params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16LE;
   input_params.rate = SAMPLE_FREQUENCY;
   input_params.channels = 1;
@@ -429,6 +433,10 @@ void run_loopback_silence_test(bool is_float)
   std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
     cleanup_cubeb_at_exit(ctx, cubeb_destroy);
 
+  if (!can_run_audio_input_test(ctx)) {
+    return;
+  }
+
   input_params.format = is_float ? CUBEB_SAMPLE_FLOAT32NE : CUBEB_SAMPLE_S16LE;
   input_params.rate = SAMPLE_FREQUENCY;
   input_params.channels = 1;
@@ -489,13 +497,13 @@ void run_loopback_device_selection_test(bool is_float)
   r = common_init(&ctx, "Cubeb loopback example: device selection, separate streams");
   ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
 
+  std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
+    cleanup_cubeb_at_exit(ctx, cubeb_destroy);
+
   if (!can_run_audio_input_test(ctx)) {
     return;
   }
 
-  std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
-    cleanup_cubeb_at_exit(ctx, cubeb_destroy);
-
   r = cubeb_enumerate_devices(ctx, CUBEB_DEVICE_TYPE_OUTPUT, &collection);
   if (r == CUBEB_ERROR_NOT_SUPPORTED) {
     fprintf(stderr, "Device enumeration not supported"