fix: ensure env-vars are written in upper case (#3072)

When creating a Crew via the CLI and selecting the Azure provider, the generated .env file had environment variables in lowercase.
This commit ensures that all environment variables are written in uppercase.

src/crewai/cli/utils.py

@@ -252,7 +252,7 @@ def write_env_file(folder_path, env_vars):
     env_file_path = folder_path / ".env"
     with open(env_file_path, "w") as file:
         for key, value in env_vars.items():
-            file.write(f"{key}={value}\n")
+            file.write(f"{key.upper()}={value}\n")
 
 
 def get_crews(crew_path: str = "crew.py", require: bool = False) -> list[Crew]:

tests/cli/test_create_crew.py

@@ -9,7 +9,6 @@ from click.testing import CliRunner
 
 from crewai.cli.create_crew import create_crew, create_folder_structure
 
-
 @pytest.fixture
 def runner():
     return CliRunner()
@@ -25,7 +24,7 @@ def temp_dir():
 def test_create_folder_structure_strips_single_trailing_slash():
     with tempfile.TemporaryDirectory() as temp_dir:
         folder_path, folder_name, class_name = create_folder_structure("hello/", parent_folder=temp_dir)
-        
+
         assert folder_name == "hello"
         assert class_name == "Hello"
         assert folder_path.name == "hello"
@@ -36,7 +35,7 @@ def test_create_folder_structure_strips_single_trailing_slash():
 def test_create_folder_structure_strips_multiple_trailing_slashes():
     with tempfile.TemporaryDirectory() as temp_dir:
         folder_path, folder_name, class_name = create_folder_structure("hello///", parent_folder=temp_dir)
-        
+
         assert folder_name == "hello"
         assert class_name == "Hello"
         assert folder_path.name == "hello"
@@ -47,7 +46,7 @@ def test_create_folder_structure_strips_multiple_trailing_slashes():
 def test_create_folder_structure_handles_complex_name_with_trailing_slash():
     with tempfile.TemporaryDirectory() as temp_dir:
         folder_path, folder_name, class_name = create_folder_structure("my-awesome_project/", parent_folder=temp_dir)
-        
+
         assert folder_name == "my_awesome_project"
         assert class_name == "MyAwesomeProject"
         assert folder_path.name == "my_awesome_project"
@@ -58,7 +57,7 @@ def test_create_folder_structure_handles_complex_name_with_trailing_slash():
 def test_create_folder_structure_normal_name_unchanged():
     with tempfile.TemporaryDirectory() as temp_dir:
         folder_path, folder_name, class_name = create_folder_structure("hello", parent_folder=temp_dir)
-        
+
         assert folder_name == "hello"
         assert class_name == "Hello"
         assert folder_path.name == "hello"
@@ -73,9 +72,9 @@ def test_create_folder_structure_with_parent_folder():
     with tempfile.TemporaryDirectory() as temp_dir:
         parent_path = Path(temp_dir) / "parent"
         parent_path.mkdir()
-        
+
         folder_path, folder_name, class_name = create_folder_structure("child/", parent_folder=parent_path)
-        
+
         assert folder_name == "child"
         assert class_name == "Child"
         assert folder_path.name == "child"
@@ -88,18 +87,18 @@ def test_create_folder_structure_with_parent_folder():
 @mock.patch("crewai.cli.create_crew.load_env_vars")
 def test_create_crew_with_trailing_slash_creates_valid_project(mock_load_env, mock_write_env, mock_copy_template, temp_dir):
     mock_load_env.return_value = {}
-    
+
     with tempfile.TemporaryDirectory() as work_dir:
         with mock.patch("crewai.cli.create_crew.create_folder_structure") as mock_create_folder:
             mock_folder_path = Path(work_dir) / "test_project"
             mock_create_folder.return_value = (mock_folder_path, "test_project", "TestProject")
-            
+
             create_crew("test-project/", skip_provider=True)
-            
+
             mock_create_folder.assert_called_once_with("test-project/", None)
             mock_copy_template.assert_called()
             copy_calls = mock_copy_template.call_args_list
-            
+
             for call in copy_calls:
                 args = call[0]
                 if len(args) >= 5:
@@ -112,14 +111,14 @@ def test_create_crew_with_trailing_slash_creates_valid_project(mock_load_env, mo
 @mock.patch("crewai.cli.create_crew.load_env_vars")
 def test_create_crew_with_multiple_trailing_slashes(mock_load_env, mock_write_env, mock_copy_template, temp_dir):
     mock_load_env.return_value = {}
-    
+
     with tempfile.TemporaryDirectory() as work_dir:
         with mock.patch("crewai.cli.create_crew.create_folder_structure") as mock_create_folder:
             mock_folder_path = Path(work_dir) / "test_project"
             mock_create_folder.return_value = (mock_folder_path, "test_project", "TestProject")
-            
+
             create_crew("test-project///", skip_provider=True)
-            
+
             mock_create_folder.assert_called_once_with("test-project///", None)
 
 
@@ -128,21 +127,21 @@ def test_create_crew_with_multiple_trailing_slashes(mock_load_env, mock_write_en
 @mock.patch("crewai.cli.create_crew.load_env_vars")
 def test_create_crew_normal_name_still_works(mock_load_env, mock_write_env, mock_copy_template, temp_dir):
     mock_load_env.return_value = {}
-    
+
     with tempfile.TemporaryDirectory() as work_dir:
         with mock.patch("crewai.cli.create_crew.create_folder_structure") as mock_create_folder:
             mock_folder_path = Path(work_dir) / "normal_project"
             mock_create_folder.return_value = (mock_folder_path, "normal_project", "NormalProject")
-            
+
             create_crew("normal-project", skip_provider=True)
-            
+
             mock_create_folder.assert_called_once_with("normal-project", None)
 
 
 def test_create_folder_structure_handles_spaces_and_dashes_with_slash():
     with tempfile.TemporaryDirectory() as temp_dir:
         folder_path, folder_name, class_name = create_folder_structure("My Cool-Project/", parent_folder=temp_dir)
-        
+
         assert folder_name == "my_cool_project"
         assert class_name == "MyCoolProject"
         assert folder_path.name == "my_cool_project"
@@ -155,7 +154,7 @@ def test_create_folder_structure_raises_error_for_invalid_names():
         invalid_cases = [
             ("123project/", "cannot start with a digit"),
             ("True/", "reserved Python keyword"),
-            ("False/", "reserved Python keyword"), 
+            ("False/", "reserved Python keyword"),
             ("None/", "reserved Python keyword"),
             ("class/", "reserved Python keyword"),
             ("def/", "reserved Python keyword"),
@@ -163,7 +162,7 @@ def test_create_folder_structure_raises_error_for_invalid_names():
             ("", "empty or contain only whitespace"),
             ("@#$/", "contains no valid characters"),
         ]
-        
+
         for invalid_name, expected_error in invalid_cases:
             with pytest.raises(ValueError, match=expected_error):
                 create_folder_structure(invalid_name, parent_folder=temp_dir)
@@ -179,20 +178,20 @@ def test_create_folder_structure_validates_names():
             ("hello.world/", "helloworld", "HelloWorld"),
             ("hello@world/", "helloworld", "HelloWorld"),
         ]
-        
+
         for valid_name, expected_folder, expected_class in valid_cases:
             folder_path, folder_name, class_name = create_folder_structure(valid_name, parent_folder=temp_dir)
             assert folder_name == expected_folder
             assert class_name == expected_class
-            
+
             assert folder_name.isidentifier(), f"folder_name '{folder_name}' should be valid Python identifier"
             assert not keyword.iskeyword(folder_name), f"folder_name '{folder_name}' should not be Python keyword"
             assert not folder_name[0].isdigit(), f"folder_name '{folder_name}' should not start with digit"
-            
+
             assert class_name.isidentifier(), f"class_name '{class_name}' should be valid Python identifier"
             assert not keyword.iskeyword(class_name), f"class_name '{class_name}' should not be Python keyword"
             assert folder_path.parent == Path(temp_dir)
-            
+
             if folder_path.exists():
                 shutil.rmtree(folder_path)
 
@@ -202,13 +201,13 @@ def test_create_folder_structure_validates_names():
 @mock.patch("crewai.cli.create_crew.load_env_vars")
 def test_create_crew_with_parent_folder_and_trailing_slash(mock_load_env, mock_write_env, mock_copy_template, temp_dir):
     mock_load_env.return_value = {}
-    
+
     with tempfile.TemporaryDirectory() as work_dir:
         parent_path = Path(work_dir) / "parent"
         parent_path.mkdir()
-        
+
         create_crew("child-crew/", skip_provider=True, parent_folder=parent_path)
-        
+
         crew_path = parent_path / "child_crew"
         assert crew_path.exists()
         assert not (crew_path / "src").exists()
@@ -224,23 +223,56 @@ def test_create_folder_structure_folder_name_validation():
             ("for/", "reserved Python keyword"),
             ("@#$invalid/", "contains no valid characters.*Python module name"),
         ]
-        
+
         for invalid_name, expected_error in folder_invalid_cases:
             with pytest.raises(ValueError, match=expected_error):
                 create_folder_structure(invalid_name, parent_folder=temp_dir)
-        
+
         valid_cases = [
             ("hello-world/", "hello_world"),
             ("my.project/", "myproject"),
             ("test@123/", "test123"),
             ("valid_name/", "valid_name"),
         ]
-        
+
         for valid_name, expected_folder in valid_cases:
             folder_path, folder_name, class_name = create_folder_structure(valid_name, parent_folder=temp_dir)
             assert folder_name == expected_folder
             assert folder_name.isidentifier()
             assert not keyword.iskeyword(folder_name)
-            
+
             if folder_path.exists():
                 shutil.rmtree(folder_path)
+
+@mock.patch("crewai.cli.create_crew.create_folder_structure")
+@mock.patch("crewai.cli.create_crew.copy_template")
+@mock.patch("crewai.cli.create_crew.load_env_vars")
+@mock.patch("crewai.cli.create_crew.get_provider_data")
+@mock.patch("crewai.cli.create_crew.select_provider")
+@mock.patch("crewai.cli.create_crew.select_model")
+@mock.patch("click.prompt")
+def test_env_vars_are_uppercased_in_env_file(
+    mock_prompt,
+    mock_select_model,
+    mock_select_provider,
+    mock_get_provider_data,
+    mock_load_env_vars,
+    mock_copy_template,
+    mock_create_folder_structure,
+    tmp_path
+):
+    crew_path = tmp_path / "test_crew"
+    crew_path.mkdir()
+    mock_create_folder_structure.return_value = (crew_path, "test_crew", "TestCrew")
+
+    mock_load_env_vars.return_value = {}
+    mock_get_provider_data.return_value = {"openai": ["gpt-4"]}
+    mock_select_provider.return_value = "azure"
+    mock_select_model.return_value = "azure/openai"
+    mock_prompt.return_value = "fake-api-key"
+
+    create_crew("Test Crew")
+
+    env_file_path = crew_path / ".env"
+    content = env_file_path.read_text()
+    assert "MODEL=" in content