Get tests running.

Signal/test/Models/AccountManagerTest.swift

@@ -48,6 +48,10 @@ class VerifyingTSAccountManager: FailingTSAccountManager {
         success()
     }
 
+    // TODO:
+//    override func updateAcountAttributes() -> Promise<Void> {
+//        return Promise(value: ())
+//    }
 }
 
 class TokenObtainingTSAccountManager: VerifyingTSAccountManager {

Signal/test/SignalBaseTest.m

@@ -23,8 +23,8 @@ NS_ASSUME_NONNULL_BEGIN
 
     SetCurrentAppContext([TestAppContext new]);
 
-    [MockEnvironment activate];
     [MockSSKEnvironment activate];
+    [MockEnvironment activate];
 }
 
 - (void)tearDown

SignalServiceKit/src/Util/AppReadiness.m

@@ -61,6 +61,12 @@ NS_ASSUME_NONNULL_BEGIN
     OWSAssertIsOnMainThread();
     OWSAssertDebug(block);
 
+    if (CurrentAppContext().isRunningTests) {
+        // We don't need to an any "on app ready" work
+        // in the tests.
+        return;
+    }
+
     if (self.isAppReady) {
         block();
         return;
@@ -93,6 +99,7 @@ NS_ASSUME_NONNULL_BEGIN
 
     NSArray<AppReadyBlock> *appReadyBlocks = [self.appReadyBlocks copy];
     [self.appReadyBlocks removeAllObjects];
+
     for (AppReadyBlock block in appReadyBlocks) {
         block();
     }