feat(errors): add client scaffolding for custom error messages (#9677)

superset-frontend/spec/javascripts/components/ErrorMessage/getErrorMessageComponentRegistry_spec.tsx

@@ -0,0 +1,64 @@
+/**
+ * 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 getErrorMessageComponentRegistry from 'src/components/ErrorMessage/getErrorMessageComponentRegistry';
+import { ErrorMessageComponentProps } from 'src/components/ErrorMessage/types';
+
+const ERROR_MESSAGE_COMPONENT = (_: ErrorMessageComponentProps) => (
+  <div>Test error</div>
+);
+
+const OVERRIDE_ERROR_MESSAGE_COMPONENT = (_: ErrorMessageComponentProps) => (
+  <div>Custom error</div>
+);
+
+describe('getErrorMessageComponentRegistry', () => {
+  it('returns undefined for a non existent key', () => {
+    expect(getErrorMessageComponentRegistry().get('INVALID_KEY')).toEqual(
+      undefined,
+    );
+  });
+
+  it('returns a component for a set key', () => {
+    getErrorMessageComponentRegistry().registerValue(
+      'VALID_KEY',
+      ERROR_MESSAGE_COMPONENT,
+    );
+
+    expect(getErrorMessageComponentRegistry().get('VALID_KEY')).toEqual(
+      ERROR_MESSAGE_COMPONENT,
+    );
+  });
+
+  it('returns the correct component for an overridden key', () => {
+    getErrorMessageComponentRegistry().registerValue(
+      'OVERRIDE_KEY',
+      ERROR_MESSAGE_COMPONENT,
+    );
+
+    getErrorMessageComponentRegistry().registerValue(
+      'OVERRIDE_KEY',
+      OVERRIDE_ERROR_MESSAGE_COMPONENT,
+    );
+
+    expect(getErrorMessageComponentRegistry().get('OVERRIDE_KEY')).toEqual(
+      OVERRIDE_ERROR_MESSAGE_COMPONENT,
+    );
+  });
+});