@Test @SuppressWarnings("all") public void mutateRowTest() { MutateRowResponse expectedResponse = MutateRowResponse.newBuilder().build(); mockBigtable.addResponse(expectedResponse); TableName tableName = TableName.of("[PROJECT]", "[INSTANCE]", "[TABLE]"); ByteString rowKey = ByteString.copyFromUtf8("122"); List<Mutation> mutations = new ArrayList<>(); MutateRowResponse actualResponse = client.mutateRow(tableName, rowKey, mutations); Assert.assertEquals(expectedResponse, actualResponse); List<GeneratedMessageV3> actualRequests = mockBigtable.getRequests(); Assert.assertEquals(1, actualRequests.size()); MutateRowRequest actualRequest = (MutateRowRequest) actualRequests.get(0); Assert.assertEquals(tableName, TableName.parse(actualRequest.getTableName())); Assert.assertEquals(rowKey, actualRequest.getRowKey()); Assert.assertEquals(mutations, actualRequest.getMutationsList()); Assert.assertTrue( channelProvider.isHeaderSent( ApiClientHeaderProvider.getDefaultApiClientHeaderKey(), GaxGrpcProperties.getDefaultApiClientHeaderPattern())); }