chore: consolidate common code in importers (#11936)

* chore: consolidate common code in importers

* Small fixes

* Small fixes

superset-frontend/src/components/ImportModal/ImportModal.test.tsx

@@ -0,0 +1,110 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import React from 'react';
+import thunk from 'redux-thunk';
+import configureStore from 'redux-mock-store';
+import { styledMount as mount } from 'spec/helpers/theming';
+import { ReactWrapper } from 'enzyme';
+
+import ImportModelsModal, { StyledIcon } from 'src/components/ImportModal';
+import Modal from 'src/common/components/Modal';
+
+const mockStore = configureStore([thunk]);
+const store = mockStore({});
+
+const requiredProps = {
+  resourceName: 'model',
+  resourceLabel: 'model',
+  icon: <StyledIcon name="database" />,
+  passwordsNeededMessage: 'Passwords are needed',
+  addDangerToast: () => {},
+  addSuccessToast: () => {},
+  onModelImport: () => {},
+  show: true,
+  onHide: () => {},
+};
+
+describe('ImportModelsModal', () => {
+  let wrapper: ReactWrapper;
+
+  beforeEach(() => {
+    wrapper = mount(<ImportModelsModal {...requiredProps} />, {
+      context: { store },
+    });
+  });
+
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('renders', () => {
+    expect(wrapper.find(ImportModelsModal)).toExist();
+  });
+
+  it('renders a Modal', () => {
+    expect(wrapper.find(Modal)).toExist();
+  });
+
+  it('renders "Import model" header', () => {
+    expect(wrapper.find('h4').text()).toEqual('Import model');
+  });
+
+  it('renders a label and a file input field', () => {
+    expect(wrapper.find('input[type="file"]')).toExist();
+    expect(wrapper.find('label')).toExist();
+  });
+
+  it('should attach the label to the input field', () => {
+    const id = 'modelFile';
+    expect(wrapper.find('label').prop('htmlFor')).toBe(id);
+    expect(wrapper.find('input').prop('id')).toBe(id);
+  });
+
+  it('should render the close, import and cancel buttons', () => {
+    expect(wrapper.find('button')).toHaveLength(3);
+  });
+
+  it('should render the import button initially disabled', () => {
+    expect(wrapper.find('button[children="Import"]').prop('disabled')).toBe(
+      true,
+    );
+  });
+
+  it('should render the import button enabled when a file is selected', () => {
+    const file = new File([new ArrayBuffer(1)], 'model_export.zip');
+    wrapper.find('input').simulate('change', { target: { files: [file] } });
+
+    expect(wrapper.find('button[children="Import"]').prop('disabled')).toBe(
+      false,
+    );
+  });
+
+  it('should render password fields when needed for import', () => {
+    const wrapperWithPasswords = mount(
+      <ImportModelsModal
+        {...requiredProps}
+        passwordFields={['databases/examples.yaml']}
+      />,
+      {
+        context: { store },
+      },
+    );
+    expect(wrapperWithPasswords.find('input[type="password"]')).toExist();
+  });
+});