Fix test failures introduced by #775

spec/plugins/oauth2/access_spec.lua

@@ -690,21 +690,20 @@ describe("Authentication Plugin", function()
       assert.are.equal(0, utils.table_size(body))
     end)
 
-    it("should return 401 Unauthorized when a invalid access token is being sent via url parameter", function()
+    it("should return 401 Unauthorized when an invalid access token is being sent via url parameter", function()
       local response, status, headers = http_client.get(STUB_GET_URL, { access_token = "invalid" }, {host = "oauth2.com"})
       local body = cjson.decode(response)
       assert.are.equal(401, status)
-      assert.are.equal('Bearer realm="service" error="invalid_token" error_description="The access token invalid"', headers['www-authenticate'])
+      assert.are.equal('Bearer realm="service" error="invalid_token" error_description="The access token is invalid"', headers['www-authenticate'])
       assert.are.equal("invalid_token", body.error)
       assert.are.equal("The access token invalid", body.error_description)
     end)
 
-    it("should return 401 Unauthorized when a invalid access_token is being sent via the Authorization header", function()
-      local token = provision_token()
+    it("should return 401 Unauthorized when an invalid access token is being sent via the Authorization header", function()
       local response, status, headers = http_client.post(STUB_POST_URL, { }, {host = "oauth2.com", authorization = "bearer invalid"})
       local body = cjson.decode(response)
       assert.are.equal(401, status)
-      assert.are.equal('Bearer realm="service" error="invalid_token" error_description="The access token invalid"', headers['www-authenticate'])
+      assert.are.equal('Bearer realm="service" error="invalid_token" error_description="The access token is invalid"', headers['www-authenticate'])
       assert.are.equal("invalid_token", body.error)
       assert.are.equal("The access token invalid", body.error_description)
     end)