test: add CLI tests to crewai-cli package

Move and adapt all CLI tests from lib/crewai/tests/cli/ to
lib/cli/tests/, updating import paths from crewai.cli.* to
crewai_cli.* and adjusting mock targets accordingly.

lib/cli/tests/test_utils.py

@@ -0,0 +1,146 @@
+import os
+import shutil
+import tempfile
+from pathlib import Path
+
+import pytest
+from crewai_cli import utils
+
+
+@pytest.fixture
+def temp_tree():
+    root_dir = tempfile.mkdtemp()
+
+    create_file(os.path.join(root_dir, "file1.txt"), "Hello, world!")
+    create_file(os.path.join(root_dir, "file2.txt"), "Another file")
+    os.mkdir(os.path.join(root_dir, "empty_dir"))
+    nested_dir = os.path.join(root_dir, "nested_dir")
+    os.mkdir(nested_dir)
+    create_file(os.path.join(nested_dir, "nested_file.txt"), "Nested content")
+
+    yield root_dir
+
+    shutil.rmtree(root_dir)
+
+
+def create_file(path, content):
+    with open(path, "w") as f:
+        f.write(content)
+
+
+def test_tree_find_and_replace_file_content(temp_tree):
+    utils.tree_find_and_replace(temp_tree, "world", "universe")
+    with open(os.path.join(temp_tree, "file1.txt"), "r") as f:
+        assert f.read() == "Hello, universe!"
+
+
+def test_tree_find_and_replace_file_name(temp_tree):
+    old_path = os.path.join(temp_tree, "file2.txt")
+    new_path = os.path.join(temp_tree, "file2_renamed.txt")
+    os.rename(old_path, new_path)
+    utils.tree_find_and_replace(temp_tree, "renamed", "modified")
+    assert os.path.exists(os.path.join(temp_tree, "file2_modified.txt"))
+    assert not os.path.exists(new_path)
+
+
+def test_tree_find_and_replace_directory_name(temp_tree):
+    utils.tree_find_and_replace(temp_tree, "empty", "renamed")
+    assert os.path.exists(os.path.join(temp_tree, "renamed_dir"))
+    assert not os.path.exists(os.path.join(temp_tree, "empty_dir"))
+
+
+def test_tree_find_and_replace_nested_content(temp_tree):
+    utils.tree_find_and_replace(temp_tree, "Nested", "Updated")
+    with open(os.path.join(temp_tree, "nested_dir", "nested_file.txt"), "r") as f:
+        assert f.read() == "Updated content"
+
+
+def test_tree_find_and_replace_no_matches(temp_tree):
+    utils.tree_find_and_replace(temp_tree, "nonexistent", "replacement")
+    assert set(os.listdir(temp_tree)) == {
+        "file1.txt",
+        "file2.txt",
+        "empty_dir",
+        "nested_dir",
+    }
+
+
+def test_tree_copy_full_structure(temp_tree):
+    dest_dir = tempfile.mkdtemp()
+    try:
+        utils.tree_copy(temp_tree, dest_dir)
+        assert set(os.listdir(dest_dir)) == set(os.listdir(temp_tree))
+        assert os.path.isfile(os.path.join(dest_dir, "file1.txt"))
+        assert os.path.isfile(os.path.join(dest_dir, "file2.txt"))
+        assert os.path.isdir(os.path.join(dest_dir, "empty_dir"))
+        assert os.path.isdir(os.path.join(dest_dir, "nested_dir"))
+        assert os.path.isfile(os.path.join(dest_dir, "nested_dir", "nested_file.txt"))
+    finally:
+        shutil.rmtree(dest_dir)
+
+
+def test_tree_copy_preserve_content(temp_tree):
+    dest_dir = tempfile.mkdtemp()
+    try:
+        utils.tree_copy(temp_tree, dest_dir)
+        with open(os.path.join(dest_dir, "file1.txt"), "r") as f:
+            assert f.read() == "Hello, world!"
+        with open(os.path.join(dest_dir, "nested_dir", "nested_file.txt"), "r") as f:
+            assert f.read() == "Nested content"
+    finally:
+        shutil.rmtree(dest_dir)
+
+
+def test_tree_copy_to_existing_directory(temp_tree):
+    dest_dir = tempfile.mkdtemp()
+    try:
+        create_file(os.path.join(dest_dir, "existing_file.txt"), "I was here first")
+        utils.tree_copy(temp_tree, dest_dir)
+        assert os.path.isfile(os.path.join(dest_dir, "existing_file.txt"))
+        assert os.path.isfile(os.path.join(dest_dir, "file1.txt"))
+    finally:
+        shutil.rmtree(dest_dir)
+
+
+@pytest.fixture
+def temp_project_dir():
+    """Create a temporary directory for testing tool extraction."""
+    with tempfile.TemporaryDirectory() as temp_dir:
+        yield Path(temp_dir)
+
+
+def create_init_file(directory, content):
+    return create_file(directory / "__init__.py", content)
+
+
+def test_extract_available_exports_empty_project(temp_project_dir, capsys):
+    with pytest.raises(SystemExit):
+        utils.extract_available_exports(dir_path=temp_project_dir)
+    captured = capsys.readouterr()
+
+    assert "No valid tools were exposed in your __init__.py file" in captured.out
+
+
+def test_extract_available_exports_no_init_file(temp_project_dir, capsys):
+    (temp_project_dir / "some_file.py").write_text("print('hello')")
+    with pytest.raises(SystemExit):
+        utils.extract_available_exports(dir_path=temp_project_dir)
+    captured = capsys.readouterr()
+
+    assert "No valid tools were exposed in your __init__.py file" in captured.out
+
+
+def test_extract_available_exports_empty_init_file(temp_project_dir, capsys):
+    create_init_file(temp_project_dir, "")
+    with pytest.raises(SystemExit):
+        utils.extract_available_exports(dir_path=temp_project_dir)
+    captured = capsys.readouterr()
+
+    assert "Warning: No __all__ defined in" in captured.out
+
+
+# Tests for extract_available_exports with crewai.tools (BaseTool, @tool)
+# remain in lib/crewai/tests/cli/test_utils.py as they require the crewai core package.
+
+# Tests for get_crews, get_flows, fetch_crews, is_valid_tool
+# remain in lib/crewai/tests/cli/test_utils.py as they require the crewai core package.