fixed tests

static/js/directives/ui/regex-match-view/regex-match-view.component.spec.ts

@@ -9,6 +9,36 @@ describe("RegexMatchViewComponent", () => {
   });
 
   describe("filterMatches", () => {
+    var items: ({value: string})[];
 
+    beforeEach(() => {
+      items = [{value: "master"}, {value: "develop"}, {value: "production"}];
+    });
+
+    it("returns null if given invalid regex expression", () => {
+      var regexstr: string = "\\asfd\\";
+
+      expect(component.filterMatches(regexstr, items, true)).toBe(null);
+    });
+
+    it("returns a subset of given items matching the given regex expression if given 'shouldMatch' as true", () => {
+      var regexstr: string = `^${items[0].value}$`;
+      var matches: ({value: string})[] = component.filterMatches(regexstr, items, true);
+
+      expect(matches.length).toBeGreaterThan(0);
+      matches.forEach((match) => {
+        expect(items).toContain(match);
+      });
+    });
+
+    it("returns a subset of given items not matching the given regex expression if given 'shouldMatch' as false", () => {
+      var regexstr: string = `^${items[0].value}$`;
+      var nonMatches: ({value: string})[] = component.filterMatches(regexstr, items, false);
+
+      expect(nonMatches.length).toBeGreaterThan(0);
+      nonMatches.forEach((nonMatch) => {
+        expect(items).toContain(nonMatch);
+      });
+    });
   });
 });