public void TwoThreadsInterleavingFailuresShouldntStompASuccess()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string thread1Auth;
string thread2Auth;
string error;
// Populate an initial PAT on two threads
dut.TryGetCredentials(tracer, out thread1Auth, out error).ShouldEqual(true);
dut.TryGetCredentials(tracer, out thread2Auth, out error).ShouldEqual(true);
// Simulate a 401 error on one threads
dut.RevokeAndCheckCanRetry(thread1Auth).ShouldEqual(true);
// That thread then retries and succeeds
dut.TryGetCredentials(tracer, out thread1Auth, out error).ShouldEqual(true);
dut.ConfirmCredentialsWorked(thread1Auth);
// If the second thread fails with the old PAT, it shouldn't stomp the new PAT
dut.RevokeAndCheckCanRetry(thread2Auth).ShouldEqual(true);
// The second thread should be able to get a PAT
dut.TryGetCredentials(tracer, out thread2Auth, out error).ShouldEqual(true);
thread2Auth.ShouldEqual(thread1Auth, "The second thread stomp the first threads good auth string");
}
public void TwoThreadsInterleavingFailuresStillRetriesOnce()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string thread1Auth;
string thread2Auth;
string error;
// Populate an initial PAT on two threads
dut.TryGetCredentials(tracer, out thread1Auth, out error).ShouldEqual(true);
dut.TryGetCredentials(tracer, out thread2Auth, out error).ShouldEqual(true);
// Simulate a 401 error on one threads
dut.RevokeAndCheckCanRetry(thread1Auth).ShouldEqual(true);
// That thread then retries
dut.TryGetCredentials(tracer, out thread1Auth, out error).ShouldEqual(true);
// The second thread fails with the old PAT
dut.RevokeAndCheckCanRetry(thread2Auth).ShouldEqual(true);
// The second thread should be able to get a PAT
dut.TryGetCredentials(tracer, out thread2Auth, out error).ShouldEqual(true);
}
public void ShouldOnlyRetryAuthOnce()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string authString;
string error;
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to get initial credential");
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true, "Should retry once");
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to retry getting credential on iteration");
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(false, "Should not retry more than once");
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(false, "TryGetCredential should not succeed during backoff");
}
public void DoesNotRetryIfTryGetCredentialsFails()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string authString;
string error;
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to get initial credential");
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true, "Should retry once");
gitProcess.ShouldFail = true;
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(false, "Succeeded despite GitProcess returning failure");
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(false, "Should not retry if GitProcess fails after retry");
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(false, "TryGetCredential should not succeed during backoff");
}
public void TwoThreadsFailAtOnceStillRetriesOnce()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string authString;
string error;
// Populate an initial PAT on two threads
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true);
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true);
// Simulate a 401 error on two threads
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true);
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true, "The first thread is denying the second thread a chance to retry.");
// Both threads should still be able to get a PAT for retry purposes
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "The second thread caused back off when it shouldn't");
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true);
}
public void GitProcessFailuresAreRetried()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string authString;
string error;
gitProcess.ShouldFail = true;
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(false, "Succeeded despite GitProcess returning failure");
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true, "Should retry once");
gitProcess.ShouldFail = false;
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to get credential on retry");
}
public void CanRetryManyTimesIfTheresSomeSuccess()
{
MockTracer tracer = new MockTracer();
MockEnlistment enlistment = new MockEnlistment();
MockGitProcess gitProcess = new MockGitProcess(enlistment);
GitAuthentication dut = new GitAuthentication(gitProcess);
string authString;
string error;
for (int i = 0; i < 5; ++i)
{
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to get credential on iteration " + i + ": " + error);
dut.RevokeAndCheckCanRetry(authString).ShouldEqual(true, "Did not retry after revoke on iteration: " + i);
dut.TryGetCredentials(tracer, out authString, out error).ShouldEqual(true, "Failed to retry getting credential on iteration " + i + ": " + error);
dut.ConfirmCredentialsWorked(authString);
}
}