Fixed handling of spec filters that are RegExp instances

Fixes #215

Author: sgravrock

lib/jasmine.js

@@ -215,7 +215,7 @@ class Jasmine extends RunnerBase {
     }
 
     if (filter) {
-      if (typeof filter === 'string') {
+      if (typeof filter === 'string' || filter instanceof RegExp) {
         this.env.configure({
           specFilter: regexSpecFilter(filter)
         });

spec/filters/regex_spec_filter_spec.js

@@ -9,9 +9,18 @@ describe("regexSpecFilter", function() {
   });
 
   it("should match the provided string", function() {
-    const specFilter = regexSpecFilter("foo");
+    const specFilter = regexSpecFilter("foo?");
 
     expect(specFilter({ getFullName: () => "foo"})).toBe(true);
+    expect(specFilter({ getFullName: () => "fo"})).toBe(true);
+    expect(specFilter({ getFullName: () => "bar"})).toBe(false);
+  });
+
+  it("should match the provided regex", function() {
+    const specFilter = regexSpecFilter(/foo?/);
+
+    expect(specFilter({ getFullName: () => "foo"})).toBe(true);
+    expect(specFilter({ getFullName: () => "fo"})).toBe(true);
     expect(specFilter({ getFullName: () => "bar"})).toBe(false);
   });
 

spec/jasmine_spec.js

@@ -262,6 +262,28 @@ describe('Jasmine', function() {
         });
       });
 
+      describe('When a filter regex is provided', function () {
+        it('installs a matching spec filter', async function () {
+          await this.execute({
+            executeArgs: [['spec/fixtures/example/*spec.js'], /interesting spec/]
+          });
+
+          expect(specFilter).toBeTruthy();
+          const matchingSpec = {
+            getFullName() {
+              return 'this is an interesting spec that should match';
+            }
+          };
+          const nonMatchingSpec = {
+            getFullName() {
+              return 'but this one is not';
+            }
+          };
+          expect(specFilter(matchingSpec)).toBeTrue();
+          expect(specFilter(nonMatchingSpec)).toBeFalse();
+        });
+      });
+
       describe('When a path filter specification is provided', function () {
         it('installs a matching spec filter', async function () {
           await this.execute({