Fix issue #2530: Multiple conditional tasks using correct previous output

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai/crew.py

@@ -783,7 +783,26 @@ class Crew(BaseModel):
             task_outputs = self._process_async_tasks(futures, was_replayed)
             futures.clear()
 
-        previous_output = task_outputs[task_index - 1] if task_outputs else None
+        if task.context and len(task.context) > 0:
+            context_task_outputs = []
+            for context_task in task.context:
+                context_task_index = self._find_task_index(context_task)
+                if context_task_index != -1 and context_task_index < task_index:
+                    for output in task_outputs:
+                        if output.description == context_task.description:
+                            context_task_outputs.append(output)
+                            break
+            previous_output = context_task_outputs[-1] if context_task_outputs else None
+        else:
+            non_conditional_outputs = []
+            for i in range(task_index):
+                if i < len(self.tasks) and not isinstance(self.tasks[i], ConditionalTask):
+                    for output in task_outputs:
+                        if output.description == self.tasks[i].description:
+                            non_conditional_outputs.append(output)
+                            break
+            previous_output = non_conditional_outputs[-1] if non_conditional_outputs else (task_outputs[task_index - 1] if task_outputs and task_index > 0 and task_index <= len(task_outputs) else None)
+            
         if previous_output is not None and not task.should_execute(previous_output):
             self._logger.log(
                 "debug",

tests/test_multiple_conditional_tasks.py

@@ -0,0 +1,116 @@
+"""Test for multiple conditional tasks."""
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from crewai.agent import Agent
+from crewai.crew import Crew
+from crewai.task import Task
+from crewai.tasks.conditional_task import ConditionalTask
+from crewai.tasks.output_format import OutputFormat
+from crewai.tasks.task_output import TaskOutput
+
+
+def test_multiple_conditional_tasks():
+    """Test that multiple conditional tasks are evaluated correctly."""
+    # Create agents for the tasks
+    agent1 = Agent(
+        role="Research Analyst",
+        goal="Find information",
+        backstory="You're a researcher",
+        verbose=True,
+    )
+    
+    agent2 = Agent(
+        role="Data Analyst",
+        goal="Process information",
+        backstory="You process data",
+        verbose=True,
+    )
+    
+    agent3 = Agent(
+        role="Report Writer",
+        goal="Write reports",
+        backstory="You write reports",
+        verbose=True,
+    )
+    
+    # Create tasks
+    task1 = Task(
+        description="Task 1",
+        expected_output="Output 1",
+        agent=agent1,
+    )
+    
+    # First conditional task should check task1's output
+    condition1_mock = MagicMock()
+    task2 = ConditionalTask(
+        description="Conditional Task 2",
+        expected_output="Output 2",
+        agent=agent2,
+        condition=condition1_mock,
+    )
+    
+    # Second conditional task should check task1's output, not task2's
+    condition2_mock = MagicMock()
+    task3 = ConditionalTask(
+        description="Conditional Task 3",
+        expected_output="Output 3",
+        agent=agent3,
+        condition=condition2_mock,
+    )
+    
+    # Create crew with the tasks
+    crew = Crew(
+        agents=[agent1, agent2, agent3],
+        tasks=[task1, task2, task3],
+        verbose=True,
+    )
+    
+    # Test the first conditional task
+    task1_output = TaskOutput(
+        description="Task 1",
+        raw="Task 1 output",
+        agent=agent1.role,
+        output_format=OutputFormat.RAW,
+    )
+    
+    condition1_mock.return_value = True  # Task should execute
+    result1 = crew._handle_conditional_task(
+        task=task2,
+        task_outputs=[task1_output],
+        futures=[],
+        task_index=1,
+        was_replayed=False,
+    )
+    
+    # Verify the condition was called with task1's output
+    condition1_mock.assert_called_once()
+    args1 = condition1_mock.call_args[0][0]
+    assert args1.raw == "Task 1 output"
+    assert result1 is None  # Task should execute, so no skipped output
+    
+    # Test the second conditional task
+    task2_output = TaskOutput(
+        description="Conditional Task 2",
+        raw="Task 2 output",
+        agent=agent2.role,
+        output_format=OutputFormat.RAW,
+    )
+    
+    condition2_mock.return_value = True  # Task should execute
+    result2 = crew._handle_conditional_task(
+        task=task3,
+        task_outputs=[task1_output, task2_output],
+        futures=[],
+        task_index=2,
+        was_replayed=False,
+    )
+    
+    # Verify the condition was called with task1's output, not task2's
+    condition2_mock.assert_called_once()
+    args2 = condition2_mock.call_args[0][0]
+    assert args2.raw == "Task 1 output"  # Should be task1's output
+    assert args2.raw != "Task 2 output"  # Should not be task2's output
+    assert result2 is None  # Task should execute, so no skipped output