Added mocks for all model types, added CollectionDataService

src/app/core/url-combiner/url-combiner.ts

@@ -0,0 +1,55 @@
+import { isEmpty } from "../../shared/empty.util";
+
+/**
+ * Combines a variable number of strings representing parts
+ * of a URL in to a single, normalized URL
+ */
+export class URLCombiner {
+  private parts: Array<string>;
+
+  /**
+   * Creates a new URLCombiner
+   *
+   * @param parts
+   *      a variable number of strings representing parts of a URL
+   */
+  constructor(...parts:Array<string>) {
+    // can't do this in the constructor signature,
+    // because of the spread operator
+    this.parts = parts;
+  }
+
+  /**
+   * Combines the parts of this URLCombiner in to a single,
+   * normalized URL
+   *
+   * e.g.  new URLCombiner('http:/foo.com/', '/bar', 'id', '5').toString()
+   * returns: http://foo.com/bar/id/5
+   *
+   * @return {string}
+   *      The combined URL
+   */
+  toString(): string {
+    if (isEmpty(this.parts)) {
+      return '';
+    }
+    else {
+      let url = this.parts.join('/');
+
+      // make sure protocol is followed by two slashes
+      url = url.replace(/:\//g, '://');
+
+      // remove consecutive slashes
+      url = url.replace(/([^:\s])\/+/g, '$1/');
+
+      // remove trailing slash before parameters or hash
+      url = url.replace(/\/(\?|&|#[^!])/g, '$1');
+
+      // replace ? in parameters with &
+      url = url.replace(/(\?.+)\?/g, '$1&');
+
+      return url;
+    }
+  }
+
+}