Improve management of OTA requestor apps in darwin tests. (#28674)

* Improve management of OTA requestor apps in darwin tests.

Instead of relying on the apps to be started externally, just start them
directly from the test itself.  This removes the proliferation of test app
instances at runtime, except during this test, and makes it easier to run other
tests without paying the cost of all the compilation/setup for this one.

The change in MTROTAProviderDelegateBridge.mm is fixing a bug that was uncovered
by the changed tests: if we shut down our last controller, that incorrectly
cleared out mDelegateNotificationQueue on the BdxOTASender, and that state is
not restored until factory restart.  Since the queue is tied to the factory, not
controllers, nulling it out does not make sense here.

* Address review comment.

.github/workflows/darwin.yaml

@@ -95,15 +95,9 @@ jobs:
             - name: Build example OTA Provider
               run: |
                   scripts/examples/gn_build_example.sh examples/ota-provider-app/linux out/debug chip_config_network_layer_ble=false
-            - name: Build OTA image files with software version number 5 and 10
-              run: |
-                  scripts/examples/gn_build_example.sh examples/ota-requestor-app/linux out/debug chip_config_network_layer_ble=false non_spec_compliant_ota_action_delay_floor=0 chip_device_config_device_software_version=5 chip_device_config_device_software_version_string='"5.0"'
-                  cp out/debug/chip-ota-requestor-app /tmp/ota-raw-image-v5
-                  scripts/examples/gn_build_example.sh examples/ota-requestor-app/linux out/debug chip_config_network_layer_ble=false non_spec_compliant_ota_action_delay_floor=0 chip_device_config_device_software_version=10 chip_device_config_device_software_version_string='"10.0"'
-                  cp out/debug/chip-ota-requestor-app /tmp/ota-raw-image-v10
             - name: Build example OTA Requestor
               run: |
-                  scripts/examples/gn_build_example.sh examples/ota-requestor-app/linux out/debug chip_config_network_layer_ble=false non_spec_compliant_ota_action_delay_floor=0
+                  scripts/examples/gn_build_example.sh examples/ota-requestor-app/linux out/debug/ota-requestor-app chip_config_network_layer_ble=false non_spec_compliant_ota_action_delay_floor=0
             - name: Delete Defaults
               run: defaults delete com.apple.dt.xctest.tool
               continue-on-error: true
@@ -116,13 +110,6 @@ jobs:
                   mkdir -p /tmp/darwin/framework-tests
                   ../../../out/debug/chip-all-clusters-app --interface-id -1 > >(tee /tmp/darwin/framework-tests/all-cluster-app.log) 2> >(tee /tmp/darwin/framework-tests/all-cluster-app-err.log >&2) &
                   ../../../out/debug/chip-all-clusters-app --interface-id -1 --dac_provider ../../../credentials/development/commissioner_dut/struct_cd_origin_pid_vid_correct/test_case_vector.json --product-id 32768 --discriminator 3839 --secured-device-port 5539 --KVS /tmp/chip-all-clusters-app-kvs2 > >(tee /tmp/darwin/framework-tests/all-cluster-app-origin-vid.log) 2> >(tee /tmp/darwin/framework-tests/all-cluster-app-origin-vid-err.log >&2) &
-                  # Make sure each ota-requestor is using a different port, discriminator, and KVS from
-                  # all-clusters-app and from other requestors.
-                  #
-                  # And a different port from the test harness too; the test harness uses port 5541.
-                  ../../../out/debug/chip-ota-requestor-app --interface-id -1 --secured-device-port 5542 --discriminator 1111 --KVS /tmp/chip-ota-requestor-kvs1 --otaDownloadPath /tmp/chip-ota-requestor-downloaded-image1 --autoApplyImage > >(tee /tmp/darwin/framework-tests/ota-requestor-app-1.log) 2> >(tee /tmp/darwin/framework-tests/ota-requestor-app-err-1.log >&2) &
-                  ../../../out/debug/chip-ota-requestor-app --interface-id -1 --secured-device-port 5543 --discriminator 1112 --KVS /tmp/chip-ota-requestor-kvs2 --otaDownloadPath /tmp/chip-ota-requestor-downloaded-image2 --autoApplyImage > >(tee /tmp/darwin/framework-tests/ota-requestor-app-2.log) 2> >(tee /tmp/darwin/framework-tests/ota-requestor-app-err-2.log >&2) &
-                  ../../../out/debug/chip-ota-requestor-app --interface-id -1 --secured-device-port 5544 --discriminator 1113 --KVS /tmp/chip-ota-requestor-kvs3 --otaDownloadPath /tmp/chip-ota-requestor-downloaded-image3 --autoApplyImage > >(tee /tmp/darwin/framework-tests/ota-requestor-app-3.log) 2> >(tee /tmp/darwin/framework-tests/ota-requestor-app-err-3.log >&2) &
                   # Disable BLE because the app does not have the permission to use
                   # it and that may crash the CI.
                   #

src/darwin/Framework/CHIP/MTROTAProviderDelegateBridge.mm

@@ -108,7 +108,6 @@ CHIP_ERROR Shutdown()
 
         mExchangeMgr = nullptr;
         mSystemLayer = nullptr;
-        mDelegateNotificationQueue = nil;
 
         return CHIP_NO_ERROR;
     }

src/darwin/Framework/CHIPTests/MTRCommissionableBrowserTests.m

@@ -27,13 +27,10 @@
 static const uint16_t kTestVendorId = 0xFFF1u;
 static const uint16_t kTestProductId1 = 0x8000u;
 static const uint16_t kTestProductId2 = 0x8001u;
-static const uint16_t kTestDiscriminator1 = 1111u;
-static const uint16_t kTestDiscriminator2 = 1112u;
-static const uint16_t kTestDiscriminator3 = 1113u;
-static const uint16_t kTestDiscriminator4 = 3840u;
-static const uint16_t kTestDiscriminator5 = 3839u;
+static const uint16_t kTestDiscriminator1 = 3840u;
+static const uint16_t kTestDiscriminator2 = 3839u;
 static const uint16_t kDiscoverDeviceTimeoutInSeconds = 10;
-static const uint16_t kExpectedDiscoveredDevicesCount = 5;
+static const uint16_t kExpectedDiscoveredDevicesCount = 2;
 
 // Singleton controller we use.
 static MTRDeviceController * sController = nil;
@@ -77,9 +74,7 @@ - (void)controller:(MTRDeviceController *)controller didFindCommissionableDevice
     XCTAssertEqual(instanceName.length, 16); // The  instance name is random, so just ensure the len is right.
     XCTAssertEqualObjects(vendorId, @(kTestVendorId));
     XCTAssertTrue([productId isEqual:@(kTestProductId1)] || [productId isEqual:@(kTestProductId2)]);
-    XCTAssertTrue([discriminator isEqual:@(kTestDiscriminator1)] || [discriminator isEqual:@(kTestDiscriminator2)] ||
-        [discriminator isEqual:@(kTestDiscriminator3)] || [discriminator isEqual:@(kTestDiscriminator4)] ||
-        [discriminator isEqual:@(kTestDiscriminator5)]);
+    XCTAssertTrue([discriminator isEqual:@(kTestDiscriminator1)] || [discriminator isEqual:@(kTestDiscriminator2)]);
     XCTAssertEqual(commissioningMode, YES);
 
     NSLog(@"Found Device (%@) with discriminator: %@ (vendor: %@, product: %@)", instanceName, discriminator, vendorId, productId);