Expose spec path as an array of names

This is in addition to the existing concatenated name. It's meant to
support tools like IDE integrations that want to be able to filter a
run to an exact set of suites/specs.

spec/core/SuiteBuilderSpec.js

@@ -163,6 +163,20 @@ describe('SuiteBuilder', function() {
       expect(spec2.id).toMatch(/^spec[0-9]+$/);
       expect(spec1.id).not.toEqual(spec2.id);
     });
+
+    it('gives each spec a full path', function() {
+      const env = { configuration: () => ({}) };
+      const suiteBuilder = new jasmineUnderTest.SuiteBuilder({ env });
+      let spec;
+
+      suiteBuilder.describe('a suite', function() {
+        suiteBuilder.describe('a nested suite', function() {
+          spec = suiteBuilder[fnName]('a spec', function() {});
+        });
+      });
+
+      expect(spec.getPath()).toEqual(['a suite', 'a nested suite', 'a spec']);
+    });
   }
 
   function sameInstanceAs(expected) {