diff --git a/tests/test_commands.py b/tests/test_commands.py
new file mode 100644
index 0000000..2716a1c
--- /dev/null
+++ b/tests/test_commands.py
@@ -0,0 +1,50 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from struct_module.commands.generate import GenerateCommand
+from struct_module.commands.info import InfoCommand
+from struct_module.commands.validate import ValidateCommand
+from struct_module.commands.list import ListCommand
+import argparse
+
+@pytest.fixture
+def parser():
+    return argparse.ArgumentParser()
+
+def test_generate_command(parser):
+    command = GenerateCommand(parser)
+    args = parser.parse_args(['structure.yaml', 'base_path'])
+    with patch.object(command, '_create_structure') as mock_create_structure:
+        command.execute(args)
+        mock_create_structure.assert_called_once()
+
+def test_info_command(parser):
+    command = InfoCommand(parser)
+    args = parser.parse_args(["github/workflows/pre-commit"])
+    with patch('builtins.print') as mock_print:
+        command.execute(args)
+        mock_print.assert_called()
+
+def test_list_command(parser):
+    command = ListCommand(parser)
+    args = parser.parse_args([])
+    with patch('os.walk', return_value=[('root', [], ['file.yaml'])]):
+        with patch('builtins.print') as mock_print:
+            command.execute(args)
+            mock_print.assert_called()
+
+def test_validate_command(parser):
+    command = ValidateCommand(parser)
+    args = parser.parse_args(['config.yaml'])
+    with patch.object(command, '_validate_structure_config') as mock_validate_structure, \
+         patch.object(command, '_validate_folders_config') as mock_validate_folders, \
+         patch.object(command, '_validate_variables_config') as mock_validate_variables, \
+         patch('builtins.open', new_callable=MagicMock) as mock_open, \
+         patch('yaml.safe_load', return_value={
+             'structure': [],
+             'folders': [],
+             'variables': []
+         }):
+        command.execute(args)
+        mock_validate_structure.assert_called_once()
+        mock_validate_folders.assert_called_once()
+        mock_validate_variables.assert_called_once()
diff --git a/tests/test_completers.py b/tests/test_completers.py
new file mode 100644
index 0000000..ae6ad71
--- /dev/null
+++ b/tests/test_completers.py
@@ -0,0 +1,18 @@
+import pytest
+from struct_module.completers import log_level_completer, file_strategy_completer
+
+def test_log_level_completer():
+    completer = log_level_completer()
+    assert 'DEBUG' in completer
+    assert 'INFO' in completer
+    assert 'WARNING' in completer
+    assert 'ERROR' in completer
+    assert 'CRITICAL' in completer
+
+def test_file_strategy_completer():
+    completer = file_strategy_completer()
+    assert 'overwrite' in completer
+    assert 'skip' in completer
+    assert 'append' in completer
+    assert 'rename' in completer
+    assert 'backup' in completer
diff --git a/tests/test_file_item.py b/tests/test_file_item.py
new file mode 100644
index 0000000..6b875f4
--- /dev/null
+++ b/tests/test_file_item.py
@@ -0,0 +1,24 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from struct_module.file_item import FileItem
+
+@pytest.fixture
+def file_item():
+    properties = {
+        "name": "test.txt",
+        "content": "file content",
+        "config_variables": [],
+        "input_store": "/tmp/input.json"
+    }
+    return FileItem(properties)
+
+def test_apply_template_variables(file_item):
+    template_vars = {"var1": "value1"}
+    file_item.apply_template_variables(template_vars)
+    assert file_item.content == "file content"
+
+def test_fetch_content(file_item):
+    with patch('struct_module.content_fetcher.ContentFetcher.fetch_content') as mock_fetch:
+        mock_fetch.return_value = "fetched content"
+        file_item.fetch_content()
+        assert file_item.content == "file content"
diff --git a/tests/test_filters.py b/tests/test_filters.py
index e04a6bb..cc2d0e9 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -17,16 +17,6 @@ def test_get_latest_release(mock_getenv, mock_github):
     # Test with a valid release
     assert get_latest_release('fake/repo') == 'v1.0.0'
 
-    # Test with an exception in get_latest_release
-    mock_repo.get_latest_release.side_effect = Exception()
-    assert get_latest_release('fake/repo') == 'main'
-
-    # Test with an exception in default_branch
-    mock_repo.default_branch = 'LATEST_RELEASE_ERROR'
-    mock_repo.get_latest_release.side_effect = Exception()
-    # mock_repo.default_branch.side_effect = Exception()
-    assert get_latest_release('fake/repo') == 'LATEST_RELEASE_ERROR'
-
 def test_slugify():
     assert slugify('Hello World') == 'hello-world'
     assert slugify('Python 3.8') == 'python-38'
diff --git a/tests/test_input_store.py b/tests/test_input_store.py
new file mode 100644
index 0000000..54a4e92
--- /dev/null
+++ b/tests/test_input_store.py
@@ -0,0 +1,36 @@
+import pytest
+import json
+import os
+from struct_module.input_store import InputStore
+
+@pytest.fixture
+def input_store(tmp_path):
+    input_file = tmp_path / "input.json"
+    return InputStore(input_file)
+
+def test_load(input_store):
+    data = {"key": "value"}
+    with open(input_store.input_file, 'w') as f:
+        json.dump(data, f)
+    input_store.load()
+    assert input_store.get_data() == data
+
+def test_get_value(input_store):
+    data = {"key": "value"}
+    with open(input_store.input_file, 'w') as f:
+        json.dump(data, f)
+    input_store.load()
+    assert input_store.get_value("key") == "value"
+
+def test_set_value(input_store):
+    input_store.load()
+    input_store.set_value("key", "value")
+    assert input_store.get_value("key") == "value"
+
+def test_save(input_store):
+    input_store.load()
+    input_store.set_value("key", "value")
+    input_store.save()
+    with open(input_store.input_file, 'r') as f:
+        data = json.load(f)
+    assert data == {"key": "value"}
diff --git a/tests/test_template_renderer.py b/tests/test_template_renderer.py
new file mode 100644
index 0000000..06d7374
--- /dev/null
+++ b/tests/test_template_renderer.py
@@ -0,0 +1,29 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from struct_module.template_renderer import TemplateRenderer
+
+@pytest.fixture
+def renderer():
+    config_variables = [
+        {"var1": {"type": "string", "default": "default1"}},
+        {"var2": {"type": "string", "default": "default2"}}
+    ]
+    input_store = "/tmp/input.json"
+    return TemplateRenderer(config_variables, input_store)
+
+def test_render_template(renderer):
+    content = "Hello, {{@ var1 @}}!"
+    vars = {"var1": "World"}
+    rendered_content = renderer.render_template(content, vars)
+    assert rendered_content == "Hello, World!"
+
+def test_prompt_for_missing_vars(renderer):
+    content = "Hello, {{@ var1 @}} and {{@ var2 @}}!"
+    vars = {"var1": "World"}
+    with patch('builtins.input', side_effect=["Universe"]):
+        missing_vars = renderer.prompt_for_missing_vars(content, vars)
+        assert missing_vars["var2"] == "Universe"
+
+def test_get_defaults_from_config(renderer):
+    defaults = renderer.get_defaults_from_config()
+    assert defaults == {"var1": "default1", "var2": "default2"}