fix: Add proper I18N mocking to Docker validation tests

- Mock I18N initialization to prevent 'Prompt file None not found' errors
- Follow existing test patterns for Agent dependency mocking
- Ensure tests are isolated and don't require external files

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

tests/test_docker_validation.py

@@ -2,7 +2,7 @@
 
 import os
 import subprocess
-from unittest.mock import Mock, patch, mock_open
+from unittest.mock import Mock, patch, mock_open, MagicMock
 import pytest
 from crewai import Agent
 
@@ -32,24 +32,14 @@ class TestDockerValidation:
         )
         assert agent.code_execution_mode == "unsafe"
 
+    @patch("crewai.utilities.i18n.I18N")
     @patch("crewai.agent.os.path.exists")
-    def test_docker_validation_skipped_in_container_dockerenv(self, mock_exists):
+    def test_docker_validation_skipped_in_container_dockerenv(self, mock_exists, mock_i18n):
         """Test that Docker validation is skipped when /.dockerenv exists."""
         mock_exists.return_value = True
         
-        agent = Agent(
+        mock_i18n_instance = MagicMock()
-            role="Test Agent",
+        mock_i18n.return_value = mock_i18n_instance
-            goal="Test goal",
-            backstory="Test backstory", 
-            allow_code_execution=True,
-        )
-        assert agent.allow_code_execution is True
-
-    @patch("crewai.agent.os.path.exists")
-    @patch("builtins.open", new_callable=mock_open, read_data="12:memory:/docker/container123")
-    def test_docker_validation_skipped_in_container_cgroup(self, mock_file, mock_exists):
-        """Test that Docker validation is skipped when cgroup indicates container."""
-        mock_exists.return_value = False
         
         agent = Agent(
             role="Test Agent",
@@ -59,14 +49,36 @@ class TestDockerValidation:
         )
         assert agent.allow_code_execution is True
 
+    @patch("crewai.utilities.i18n.I18N")
+    @patch("crewai.agent.os.path.exists")
+    @patch("builtins.open", new_callable=mock_open, read_data="12:memory:/docker/container123")
+    def test_docker_validation_skipped_in_container_cgroup(self, mock_file, mock_exists, mock_i18n):
+        """Test that Docker validation is skipped when cgroup indicates container."""
+        mock_exists.return_value = False
+        
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
+        agent = Agent(
+            role="Test Agent",
+            goal="Test goal",
+            backstory="Test backstory",
+            allow_code_execution=True,
+        )
+        assert agent.allow_code_execution is True
+
+    @patch("crewai.utilities.i18n.I18N")
     @patch("crewai.agent.os.path.exists")
     @patch("crewai.agent.os.getpid")
     @patch("builtins.open", side_effect=FileNotFoundError)
-    def test_docker_validation_skipped_in_container_pid1(self, mock_file, mock_getpid, mock_exists):
+    def test_docker_validation_skipped_in_container_pid1(self, mock_file, mock_getpid, mock_exists, mock_i18n):
         """Test that Docker validation is skipped when running as PID 1."""
         mock_exists.return_value = False
         mock_getpid.return_value = 1
         
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
         agent = Agent(
             role="Test Agent", 
             goal="Test goal",
@@ -75,16 +87,20 @@ class TestDockerValidation:
         )
         assert agent.allow_code_execution is True
 
+    @patch("crewai.utilities.i18n.I18N")
     @patch("crewai.agent.shutil.which")
     @patch("crewai.agent.os.path.exists")
     @patch("crewai.agent.os.getpid")
     @patch("builtins.open", side_effect=FileNotFoundError)
-    def test_docker_validation_fails_no_docker(self, mock_file, mock_getpid, mock_exists, mock_which):
+    def test_docker_validation_fails_no_docker(self, mock_file, mock_getpid, mock_exists, mock_which, mock_i18n):
         """Test that Docker validation fails when Docker is not installed."""
         mock_exists.return_value = False
         mock_getpid.return_value = 1000
         mock_which.return_value = None
         
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
         with pytest.raises(RuntimeError, match="Docker is not installed"):
             Agent(
                 role="Test Agent",
@@ -93,18 +109,22 @@ class TestDockerValidation:
                 allow_code_execution=True,
             )
 
+    @patch("crewai.utilities.i18n.I18N")
     @patch("crewai.agent.shutil.which")
     @patch("crewai.agent.subprocess.run")
     @patch("crewai.agent.os.path.exists")
     @patch("crewai.agent.os.getpid")
     @patch("builtins.open", side_effect=FileNotFoundError)
-    def test_docker_validation_fails_docker_not_running(self, mock_file, mock_getpid, mock_exists, mock_run, mock_which):
+    def test_docker_validation_fails_docker_not_running(self, mock_file, mock_getpid, mock_exists, mock_run, mock_which, mock_i18n):
         """Test that Docker validation fails when Docker daemon is not running."""
         mock_exists.return_value = False
         mock_getpid.return_value = 1000
         mock_which.return_value = "/usr/bin/docker"
         mock_run.side_effect = subprocess.CalledProcessError(1, "docker info")
         
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
         with pytest.raises(RuntimeError, match="Docker is not running"):
             Agent(
                 role="Test Agent",
@@ -113,18 +133,22 @@ class TestDockerValidation:
                 allow_code_execution=True,
             )
 
+    @patch("crewai.utilities.i18n.I18N")
     @patch("crewai.agent.shutil.which")
     @patch("crewai.agent.subprocess.run")
     @patch("crewai.agent.os.path.exists")
     @patch("crewai.agent.os.getpid")
     @patch("builtins.open", side_effect=FileNotFoundError)
-    def test_docker_validation_passes_docker_available(self, mock_file, mock_getpid, mock_exists, mock_run, mock_which):
+    def test_docker_validation_passes_docker_available(self, mock_file, mock_getpid, mock_exists, mock_run, mock_which, mock_i18n):
         """Test that Docker validation passes when Docker is available."""
         mock_exists.return_value = False
         mock_getpid.return_value = 1000
         mock_which.return_value = "/usr/bin/docker"
         mock_run.return_value = Mock(returncode=0)
         
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
         agent = Agent(
             role="Test Agent",
             goal="Test goal",
@@ -153,8 +177,12 @@ class TestDockerValidation:
              patch("crewai.agent.os.getpid", return_value=1):
             assert agent._is_running_in_container() is True
 
-    def test_reproduce_original_issue(self):
+    @patch("crewai.utilities.i18n.I18N")
+    def test_reproduce_original_issue(self, mock_i18n):
         """Test that reproduces the original issue from GitHub issue #3028."""
+        mock_i18n_instance = MagicMock()
+        mock_i18n.return_value = mock_i18n_instance
+        
         with patch("crewai.agent.os.path.exists", return_value=True):
             agent = Agent(
                 role="Knowledge Pattern Synthesizer",