cache plugin tests: ~73% coverage (ref. #8)

__tests__/plugins/cache.test.js

@@ -52,7 +52,7 @@ describe("plugin: cache", () => {
     return expect(self.LibResilientPlugins[0].fetch('https://resilient.is/test.json')).rejects.toThrow(Error)
   });
   
-  test("it should stash successfully", () => {
+  test("it should stash a url successfully", () => {
     require("../../plugins/cache.js");
     expect.assertions(7);
     return self.LibResilientPlugins[0].stash('https://resilient.is/test.json').then((result)=>{
@@ -70,4 +70,30 @@ describe("plugin: cache", () => {
     })
   });
   
+  test("it should clear a url successfully", () => {
+    require("../../plugins/cache.js");
+    expect.assertions(3);
+    return self.LibResilientPlugins[0].stash('https://resilient.is/test.json').then((result)=>{
+      expect(result).toBe(undefined)
+      return self.LibResilientPlugins[0].unstash('https://resilient.is/test.json')
+    }).then(result => {
+      expect(result).toEqual(true)
+      return expect(self.LibResilientPlugins[0].fetch('https://resilient.is/test.json')).rejects.toThrow(Error)
+    })
+  });
+  
+  test("it should clear an array of urls successfully", () => {
+    require("../../plugins/cache.js");
+    expect.assertions(4);
+    return self.LibResilientPlugins[0].stash(['https://resilient.is/test.json', 'https://resilient.is/test2.json']).then((result)=>{
+      expect(result).toEqual([undefined, undefined])
+      return self.LibResilientPlugins[0].unstash(['https://resilient.is/test.json', 'https://resilient.is/test2.json'])
+    }).then(result => {
+      expect(result).toEqual([true, true])
+      return expect(self.LibResilientPlugins[0].fetch('https://resilient.is/test.json')).rejects.toThrow(Error)
+    }).then(()=>{
+      return expect(self.LibResilientPlugins[0].fetch('https://resilient.is/test2.json')).rejects.toThrow(Error)
+    })
+  });
+  
 });