From a1aa636d8856c97b8edb1c091b3919a45a6d6716 Mon Sep 17 00:00:00 2001
From: Kazuaki Matsuo <fly.49.89.over@gmail.com>
Date: Sat, 20 Jul 2024 17:42:15 -0700
Subject: [PATCH] fix: do nothing for an empty array in w3c actions (#308)

* fix: do nothing for an empty array in w3c actions

* apply the same change in key actions

* add test case

* revert removed code for safe

* tweak spaces
---
 .../IntegrationTests/AMW3CActionsTests.m      | 21 ++++++++++++++++
 .../Utilities/FBW3CActionsSynthesizer.m       | 25 ++++++++++++++-----
 2 files changed, 40 insertions(+), 6 deletions(-)

diff --git a/WebDriverAgentMac/IntegrationTests/AMW3CActionsTests.m b/WebDriverAgentMac/IntegrationTests/AMW3CActionsTests.m
index 20ddf98..3ee358d 100644
--- a/WebDriverAgentMac/IntegrationTests/AMW3CActionsTests.m
+++ b/WebDriverAgentMac/IntegrationTests/AMW3CActionsTests.m
@@ -370,4 +370,25 @@ - (void)testKeys
   XCTAssertEqualObjects(edit.value, @"NBA");
 }
 
+- (void)testKeysWithEmptyActions
+{
+  [self switchToEditsTab];
+  XCUIElement *edit = self.testedApplication.textFields.firstMatch;
+  [edit click];
+
+  NSArray<NSDictionary<NSString *, id> *> *gesture =
+  @[@{
+    @"type": @"key",
+    @"id": @"keyboard",
+    @"actions": @[],
+  },
+  ];
+  NSError *error;
+  XCTAssertTrue([self.testedApplication fb_performW3CActions:gesture
+                                                elementCache:nil
+                                                       error:&error]);
+  XCTAssertNil(error);
+  XCTAssertEqualObjects(edit.value, @"");
+}
+
 @end
diff --git a/WebDriverAgentMac/WebDriverAgentLib/Utilities/FBW3CActionsSynthesizer.m b/WebDriverAgentMac/WebDriverAgentLib/Utilities/FBW3CActionsSynthesizer.m
index 1cb2c56..acdc4cc 100644
--- a/WebDriverAgentMac/WebDriverAgentLib/Utilities/FBW3CActionsSynthesizer.m
+++ b/WebDriverAgentMac/WebDriverAgentLib/Utilities/FBW3CActionsSynthesizer.m
@@ -260,7 +260,7 @@ - (nullable NSValue *)positionWithError:(NSError **)error
     }
     return nil;
   }
-  
+
   XCUIElement *element = isOriginAnElement ? (XCUIElement *)origin : nil;
   NSNumber *x = [self.actionItem objectForKey:FB_ACTION_ITEM_KEY_X];
   NSNumber *y = [self.actionItem objectForKey:FB_ACTION_ITEM_KEY_Y];
@@ -272,7 +272,7 @@ - (nullable NSValue *)positionWithError:(NSError **)error
     }
     return nil;
   }
-  
+
   if (nil != element) {
     if (nil == x && nil == y) {
       return [self hitpointWithElement:element
@@ -283,13 +283,13 @@ - (nullable NSValue *)positionWithError:(NSError **)error
                       positionOffset:[NSValue am_valueWithCGPoint:CGPointMake(x.floatValue, y.floatValue)]
                                error:error];
   }
-  
+
   if ([origin isKindOfClass:NSString.class] && [origin isEqualToString:FB_ORIGIN_TYPE_VIEWPORT]) {
     return [self hitpointWithElement:nil
                       positionOffset:[NSValue am_valueWithCGPoint:CGPointMake(x.floatValue, y.floatValue)]
                                error:error];
   }
-  
+
   // origin == FB_ORIGIN_TYPE_POINTER
   if (nil == self.previousItem) {
     NSString *errorDescription = [NSString stringWithFormat:@"There is no previous item for '%@' action item, however %@ is set to '%@'", self.actionItem, FB_ACTION_ITEM_KEY_ORIGIN, FB_ORIGIN_TYPE_POINTER];
@@ -734,7 +734,7 @@ @implementation FBW3CActionsSynthesizer
       shouldCancelNextItem = YES;
       continue;
     }
-    
+
     if (nil == self.elementCache) {
       [result addObject:actionItem];
       continue;
@@ -874,7 +874,7 @@ @implementation FBW3CActionsSynthesizer
 
   NSArray<NSDictionary<NSString *, id> *> *actionItems = [actionDescription objectForKey:FB_KEY_ACTIONS];
   if (nil == actionItems || 0 == actionItems.count) {
-   NSString *description = [NSString stringWithFormat:@"It is mandatory to have at least one gesture item defined for each action. Action with id '%@' contains none", actionId];
+    NSString *description = [NSString stringWithFormat:@"It is mandatory to have at least one gesture item defined for each action. Action with id '%@' contains none", actionId];
     if (error) {
       *error = [[FBErrorBuilder.builder withDescription:description] build];
     }
@@ -959,6 +959,19 @@ - (nullable XCSynthesizedEventRecord *)synthesizeWithError:(NSError **)error
       }
       return nil;
     }
+    NSArray<NSDictionary<NSString *, id> *> *actionItems = [action objectForKey:FB_KEY_ACTIONS];
+    if (nil == actionItems) {
+     NSString *description = [NSString stringWithFormat:@"It is mandatory to have at least one item defined for each action. Action with id '%@' contains none", actionId];
+      if (error) {
+        *error = [[FBErrorBuilder.builder withDescription:description] build];
+      }
+      return nil;
+    }
+    if (0 == actionItems.count) {
+      [FBLogger logFmt:@"Action items in the action id '%@' had an empty array. Skipping the action.", actionId];
+      continue;
+    }
+
     [actionIds addObject:actionId];
     [actionsMapping setObject:action forKey:actionId];
   }