LinphoneUITester: try to robustify tests by going to dialer before starting tests

Classes/LinphoneManager.m

@@ -2050,7 +2050,6 @@ static void audioRouteChangeListenerCallback (
 		if( linphone_core_payload_type_is_vbr(theLinphoneCore, pt) ) {
 			linphone_core_set_payload_type_bitrate(theLinphoneCore, pt, bitrate);
 		}
-
 		codec = codec->next;
 	}
 }

KifTests/ChatTester.m

@@ -229,6 +229,8 @@
 - (void)testRemoveAllChats {
 	NSArray *uuids = [self getUUIDArrayOfSize:5];
 
+	[self removeAllRooms];
+
 	for (NSString *uuid in uuids) {
 		[self startChatWith:uuid];
 		[self sendMessage:@"Test"];

KifTests/LinphoneTestCase.m

@@ -26,6 +26,20 @@
 	linphone_core_set_log_level(ORTP_WARNING);
 }
 
+- (void)beforeAll {
+	[super beforeAll];
+#if TARGET_IPHONE_SIMULATOR
+	[tester acknowledgeSystemAlert]; // Contact access alert
+	[tester acknowledgeSystemAlert]; // Local notification / badge alert
+#endif
+	// go to dialer
+	for (NSString *button in @[ @"Cancel", @"Back", @"Dialer" ]) {
+		if ([tester tryFindingTappableViewWithAccessibilityLabel:button error:nil]) {
+			[tester tapViewWithAccessibilityLabel:button traits:UIAccessibilityTraitButton];
+		}
+	}
+}
+
 - (NSString *)me {
 	return @"testios";
 }
@@ -46,15 +60,6 @@
     return array;
 }
 
-- (void)beforeAll{
-#if TARGET_IPHONE_SIMULATOR
-	[tester acknowledgeSystemAlert]; // Contact access alert
-	[tester acknowledgeSystemAlert]; // Local notification / badge alert
-#endif
-	[super beforeAll];
-}
-
-
 static bool invalidAccount = true;
 
 - (void)setInvalidAccountSet:(BOOL)invalidAccountSet {