[ADF-3615] created a pipe to replace empty space in strings with a special character (#4005)

lib/core/pipes/format-space.pipe.spec.ts

@@ -0,0 +1,65 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed 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 { FormatSpacePipe } from './format-space.pipe';
+
+describe('FormatSpacePipe', () => {
+
+    let pipe: FormatSpacePipe;
+
+    beforeEach(() => {
+        pipe = new FormatSpacePipe();
+    });
+
+    it('should replace the white space with an underscore by default', () => {
+        let result = pipe.transform('FAKE TEST');
+        expect(result).toBe('fake_test');
+    });
+
+    it('should replace all the white spaces with an underscore by default', () => {
+        let result = pipe.transform('FAKE TEST CHECK ');
+        expect(result).toBe('fake_test_check');
+    });
+
+    it('should trim the space at the end of the string and replace the ones in the middle', () => {
+        let result = pipe.transform(' FAKE TEST CHECK ');
+        expect(result).toBe('fake_test_check');
+    });
+
+    it('should return a lower case string by default', () => {
+        const testString = 'FAKE_TEST_LOWERCASE';
+        let result = pipe.transform(testString);
+        expect(result).toBe(testString.toLocaleLowerCase());
+    });
+
+    it('should replace the empty space with the character given', () => {
+        const testString = 'FAKE TEST LOWERCASE';
+        let result = pipe.transform(testString, '+');
+        expect(result).toBe('fake+test+lowercase');
+    });
+
+    it('should leave the string uppercase if explicitly set', () => {
+        const testString = 'FAKE TEST LOWERCASE';
+        let result = pipe.transform(testString, '-', false);
+        expect(result).toBe('FAKE-TEST-LOWERCASE');
+    });
+
+    it('should return an empty string when input is null', () => {
+        let result = pipe.transform(null);
+        expect(result).toBe('');
+    });
+});