diff --git a/tests/test_staticfiles.py b/tests/test_staticfiles.py
new file mode 100644
index 0000000..38b452c
--- /dev/null
+++ b/tests/test_staticfiles.py
@@ -0,0 +1,139 @@
+import os
+from unittest.mock import patch
+
+import pytest
+
+import flask_restful_swagger
+from flask_restful_swagger.swagger import StaticFiles
+
+test_fixtures_renders = [
+    ["index.html", None, None],
+    ["o2c.html", None, None],
+    ["swagger-ui.js", None, None],
+    ["swagger-ui.min.js", None, None],
+    ["lib/swagger-oauth.js", None, None],
+]
+
+
+@patch("flask_restful_swagger.swagger.render_page")
+@patch("flask_restful_swagger.swagger._get_current_registry")
+@pytest.mark.parametrize("dir1,dir2,dir3", test_fixtures_renders)
+def test_get_valid_content_renders(registry, render_page, dir1, dir2, dir3):
+
+    static_files = StaticFiles()
+    registry.return_value = {"spec_endpoint_path": "dummy"}
+
+    static_files.get(dir1, dir2, dir3)
+    assert render_page.call_args[0] == (dir1, {"resource_list_url": "dummy"})
+
+
+test_fixtures_none = [[None, None, None]]
+
+
+@patch("flask_restful_swagger.swagger.render_page")
+@patch("flask_restful_swagger.swagger._get_current_registry")
+@pytest.mark.parametrize("dir1,dir2,dir3", test_fixtures_none)
+def test_get_valid_content_renders_none(
+    registry, render_page, dir1, dir2, dir3
+):
+
+    static_files = StaticFiles()
+    registry.return_value = {"spec_endpoint_path": "dummy"}
+
+    static_files.get(dir1, dir2, dir3)
+    assert render_page.call_args[0] == (
+        "index.html",
+        {"resource_list_url": "dummy"},
+    )
+
+
+test_fixtures_mimes = [
+    ["index2.html", "text/plain"],
+    ["image.gif", "image/gif"],
+    ["image.png", "image/png"],
+    ["javascript.js", "text/javascript"],
+    ["style.css", "text/css"],
+]
+
+
+@patch("flask_restful_swagger.swagger.Response", autospec=True)
+@patch("flask_restful_swagger.swagger.open")
+@patch("flask_restful_swagger.swagger.os.path.exists")
+@patch("flask_restful_swagger.swagger._get_current_registry")
+@pytest.mark.parametrize("dir1,mime", test_fixtures_mimes)
+def test_get_valid_content_mime(
+    registry, mock_exists, mock_open, response, dir1, mime
+):
+
+    mock_open.return_value = "file_handle"
+    mock_exists.return_value = True
+
+    static_files = StaticFiles()
+    static_files.get(dir1, None, None)
+    assert mock_exists.called
+    assert mock_open.called
+
+    args, kwargs = response.call_args_list[0]
+    assert args == ("file_handle",)
+    assert kwargs == {"mimetype": mime}
+
+
+test_fixtures_mimes_does_not_exist = ["index2.html"]
+
+
+@patch("flask_restful_swagger.swagger.os.path.exists")
+@patch("flask_restful_swagger.swagger._get_current_registry")
+@patch("flask_restful_swagger.swagger.abort")
+@pytest.mark.parametrize("dir1", test_fixtures_mimes_does_not_exist)
+def test_get_valid_content_mime_file_does_not_exist(
+    abort, registry, mock_exists, dir1
+):
+
+    mock_exists.return_value = False
+    static_files = StaticFiles()
+    static_files.get(dir1, None, None)
+    assert mock_exists.called
+    assert abort.called
+
+
+test_fixtures_paths = [
+    ["paths", "index2.html", None, "paths/index2.html"],
+    ["paths", "more_paths", "index2.html", "paths/more_paths/index2.html"],
+]
+
+
+@patch("flask_restful_swagger.swagger.Response", autospec=True)
+@patch("flask_restful_swagger.swagger.os.path.exists")
+@patch("flask_restful_swagger.swagger.open")
+@patch("flask_restful_swagger.swagger.render_page")
+@patch("flask_restful_swagger.swagger._get_current_registry")
+@pytest.mark.parametrize("dir1,dir2,dir3,expected", test_fixtures_paths)
+def test_get_valid_content_paths(
+    registry,
+    render_page,
+    mock_open,
+    mock_exists,
+    response,
+    dir1,
+    dir2,
+    dir3,
+    expected,
+):
+
+    mock_open.return_value = "file_handle"
+    mock_exists.return_value = True
+
+    static_files = StaticFiles()
+    registry.return_value = {"spec_endpoint_path": "dummy"}
+
+    static_files.get(dir1, dir2, dir3)
+    module_path = os.path.dirname(flask_restful_swagger.__file__)
+    static_files = "static"
+    full_path = os.path.join(module_path, static_files, expected)
+
+    assert mock_exists.called
+    assert mock_open.call_args_list[0][0][0] == full_path
+
+    args, kwargs = response.call_args_list[0]
+    assert args == ("file_handle",)
+    assert kwargs == {"mimetype": "text/plain"}