testing: fixed test flake in TestSnapshotCounters (#1645)

* testing: added logging to figure out root cause of the flake in TestSnapshotCounters

* fixed test flake caused by not waiting for upload task to be created

internal/server/api_sources_test.go

@@ -66,8 +66,22 @@ func TestSnapshotCounters(t *testing.T) {
 	require.True(t, uresp.Sources[si.String()].Success)
 	require.NoError(t, err)
 
+	// wait until new task for the upload is created
+	deadline := clock.Now().Add(10 * time.Second)
+	for mustGetLatestTask(t, cli).TaskID == et.TaskID && clock.Now().Before(deadline) {
+		time.Sleep(100 * time.Microsecond)
+	}
+
 	ut := waitForTask(t, cli, mustGetLatestTask(t, cli).TaskID, 15*time.Second)
 
+	t.Logf("got latest task: %v", ut)
+
+	allTasks := mustListTasks(t, cli)
+
+	for tid, tsk := range allTasks {
+		t.Logf("allTasks[%v] =  %v", tid, tsk)
+	}
+
 	require.Equal(t, ut.Counters["Hashed Files"], uitask.SimpleCounter(3))
 	require.Equal(t, ut.Counters["Hashed Bytes"], uitask.BytesCounter(9))
 	require.Equal(t, ut.Counters["Excluded Directories"], uitask.SimpleCounter(1))