fix: resolve CI test failure in output.py

- Fixed undefined 'tool' variable in display_history function
- Changed '[tool]' markup tag usage to proper Rich syntax
- All tests now pass (38/38 unit tests)
- Type checking passes with mypy --strict

tests/test_profile.py

@@ -0,0 +1,150 @@
+"""Tests for profile management module."""
+
+import pytest
+from pathlib import Path
+
+
+class TestProfileManagement:
+    """Test cases for profile management."""
+
+    def test_get_profiles_dir(self, temp_dir):
+        """Test getting profiles directory."""
+        from env_pro.core.profile import get_profiles_dir
+
+        profiles_dir = get_profiles_dir(temp_dir)
+        assert profiles_dir == temp_dir / ".env-profiles"
+
+    def test_list_profiles_empty(self, temp_dir):
+        """Test listing profiles when none exist."""
+        from env_pro.core.profile import list_profiles
+
+        profiles = list_profiles(temp_dir)
+        assert profiles == []
+
+    def test_create_profile(self, temp_dir):
+        """Test creating a new profile."""
+        from env_pro.core.profile import create_profile, profile_exists, list_profiles
+
+        create_profile("dev", temp_dir)
+
+        assert profile_exists("dev", temp_dir)
+        assert "dev" in list_profiles(temp_dir)
+
+    def test_create_profile_with_env_file(self, temp_dir):
+        """Test profile creation with .env file."""
+        from env_pro.core.profile import create_profile, get_profile_env_file
+
+        create_profile("staging", temp_dir)
+
+        env_file = get_profile_env_file("staging", temp_dir)
+        assert env_file.exists()
+
+    def test_delete_profile(self, temp_dir):
+        """Test deleting a profile."""
+        from env_pro.core.profile import create_profile, delete_profile, profile_exists, list_profiles
+
+        create_profile("test", temp_dir)
+        assert profile_exists("test", temp_dir)
+
+        delete_profile("test", temp_dir)
+        assert not profile_exists("test", temp_dir)
+        assert "test" not in list_profiles(temp_dir)
+
+    def test_set_and_get_active_profile(self, temp_dir):
+        """Test setting and getting active profile."""
+        from env_pro.core.profile import set_active_profile, get_active_profile, create_profile
+
+        create_profile("prod", temp_dir)
+        set_active_profile("prod", temp_dir)
+
+        assert get_active_profile(temp_dir) == "prod"
+
+    def test_set_profile_var(self, temp_dir):
+        """Test setting a variable in a profile."""
+        from env_pro.core.profile import create_profile, set_profile_var, get_profile_vars
+
+        create_profile("dev", temp_dir)
+        set_profile_var("dev", "DATABASE_URL", "postgresql://localhost:5432/db", temp_dir)
+
+        vars = get_profile_vars("dev", temp_dir)
+        assert vars["DATABASE_URL"] == "postgresql://localhost:5432/db"
+
+    def test_get_profile_vars(self, temp_dir):
+        """Test getting all variables from a profile."""
+        from env_pro.core.profile import create_profile, set_profile_var, get_profile_vars
+
+        create_profile("dev", temp_dir)
+        set_profile_var("dev", "VAR1", "value1", temp_dir)
+        set_profile_var("dev", "VAR2", "value2", temp_dir)
+
+        vars = get_profile_vars("dev", temp_dir)
+        assert vars["VAR1"] == "value1"
+        assert vars["VAR2"] == "value2"
+
+    def test_delete_profile_var(self, temp_dir):
+        """Test deleting a variable from a profile."""
+        from env_pro.core.profile import create_profile, set_profile_var, delete_profile_var, get_profile_vars
+
+        create_profile("dev", temp_dir)
+        set_profile_var("dev", "TO_DELETE", "value", temp_dir)
+        assert "TO_DELETE" in get_profile_vars("dev", temp_dir)
+
+        deleted = delete_profile_var("dev", "TO_DELETE", temp_dir)
+        assert deleted
+        assert "TO_DELETE" not in get_profile_vars("dev", temp_dir)
+
+    def test_copy_profile(self, temp_dir):
+        """Test copying a profile."""
+        from env_pro.core.profile import create_profile, set_profile_var, copy_profile, get_profile_vars
+
+        create_profile("source", temp_dir)
+        set_profile_var("source", "VAR1", "value1", temp_dir)
+
+        from env_pro.core.profile import list_profiles
+
+        copy_profile("source", "dest", temp_dir)
+
+        assert "dest" in list_profiles(temp_dir)
+        assert get_profile_vars("dest", temp_dir)["VAR1"] == "value1"
+
+    def test_diff_profiles(self, temp_dir):
+        """Test comparing two profiles."""
+        from env_pro.core.profile import create_profile, set_profile_var, diff_profiles
+
+        create_profile("profile1", temp_dir)
+        create_profile("profile2", temp_dir)
+        set_profile_var("profile1", "VAR1", "value1", temp_dir)
+        set_profile_var("profile2", "VAR1", "value2", temp_dir)
+        set_profile_var("profile2", "VAR2", "value2", temp_dir)
+
+        diff = diff_profiles("profile1", "profile2", temp_dir)
+
+        assert "VAR2" in diff["only_in_profile2"]
+        assert diff["different"]["VAR1"] == {"profile1": "value1", "profile2": "value2"}
+
+
+class TestProfileErrors:
+    """Test cases for profile errors."""
+
+    def test_create_duplicate_profile(self, temp_dir):
+        """Test creating a profile that already exists."""
+        from env_pro.core.profile import create_profile, ProfileAlreadyExistsError
+
+        create_profile("dev", temp_dir)
+
+        with pytest.raises(ProfileAlreadyExistsError):
+            create_profile("dev", temp_dir)
+
+    def test_delete_nonexistent_profile(self, temp_dir):
+        """Test deleting a profile that doesn't exist."""
+        from env_pro.core.profile import delete_profile, ProfileNotFoundError
+
+        with pytest.raises(ProfileNotFoundError):
+            delete_profile("nonexistent", temp_dir)
+
+    def test_switch_to_nonexistent_profile(self, temp_dir):
+        """Test switching to a non-existent profile."""
+        from env_pro.core.profile import switch_profile, ProfileNotFoundError
+
+        with pytest.raises(ProfileNotFoundError):
+            switch_profile("nonexistent", temp_dir)