public async Task DefaultAzureCredential_UseAzureCliCredential_ParallelCalls() { var options = InstrumentClientOptions(new DefaultAzureCredentialOptions { ExcludeEnvironmentCredential = true, ExcludeInteractiveBrowserCredential = true, ExcludeSharedTokenCacheCredential = true, ExcludeManagedIdentityCredential = true, VisualStudioCodeTenantId = TestEnvironment.TestTenantId }); var(expectedToken, expectedExpiresOn, processOutput) = CredentialTestHelpers.CreateTokenForAzureCli(); var processService = new TestProcessService { CreateHandler = psi => new TestProcess { Output = processOutput } }; var vscAdapter = new TestVscAdapter(ExpectedServiceName, "AzureCloud", null); var fileSystem = CredentialTestHelpers.CreateFileSystemForVisualStudioCode(TestEnvironment); var factory = new TestDefaultAzureCredentialFactory(options, fileSystem, processService, vscAdapter); var credential = InstrumentClient(new DefaultAzureCredential(factory, options)); var tasks = new List <Task <AccessToken> >(); for (int i = 0; i < 10; i++) { tasks.Add(Task.Run(async() => await credential.GetTokenAsync(new TokenRequestContext(new[] { TestEnvironment.KeyvaultScope }), CancellationToken.None))); } await Task.WhenAll(tasks); foreach (Task <AccessToken> task in tasks) { Assert.AreEqual(task.Result.Token, expectedToken); Assert.AreEqual(task.Result.ExpiresOn, expectedExpiresOn); } }