Added budget_service.mojom

third_party/WebKit/LayoutTests/http/tests/budget/budget-service-mock.js

+/**
+ * Mock implementation of the budget service.
+ */
+
+"use strict";
+
+const TEST_BUDGET_COST = 1.2;
+const TEST_BUDGET_VALUE = 2.3;

[johnme, 2016/08/17 13:54:01]

Nit: value -> available?

[harkness, 2016/08/18 10:23:26]

Done.

+const TEST_BUDGET_EXPIRATION = 3.4;

[johnme, 2016/08/17 13:54:01]

Whilst 3 milliseconds past midnight 1970 is a valid date, it might be clearer to
use a more realistic one.

[harkness, 2016/08/18 10:23:26]

Done.

+
+let budgetServiceMock = loadMojoModules(
+    'budgetServiceMock',
+    ['third_party/WebKit/public/platform/modules/budget_service/budget_service.mojom',
+     'mojo/public/js/router']
+    ).then(mojo => {

[johnme, 2016/08/17 13:54:01]

Nit: please move the ] down next to the )

[harkness, 2016/08/18 10:23:26]

Done.

+  let [budget_service, router] = mojo.modules;

[johnme, 2016/08/17 13:54:01]

Nit: camelCase in JS

[harkness, 2016/08/18 10:23:26]

budget_service is the name of the mojo service, so this is actually consistent
with that, even if not with normal JS style. The other mock I'd looked at used
this casing, do you think it's better to go JS style route or Mojo consistency
route?

[johnme, 2016/08/18 13:04:31]

geolocation-mock.js calls one of its loaded mojo services permissionStatus, so
consistency can go either way. Stick with JS style I guess?

[harkness, 2016/08/22 08:57:47]

Sounds good, I'll change it.

+
+  class BudgetServiceMock {
+    constructor(interfaceProvider) {
+      interfaceProvider.addInterfaceOverrideForTesting(
+          budget_service.BudgetService.name,
+          handle => this.connectBudgetService_(handle));
+
+      this.interfaceProvider_ = interfaceProvider;
+    }
+
+    connectBudgetService_(handle) {
+      this.budgetServiceStub_ = new budget_service.BudgetService.stubClass(this);
+      this.budgetServiceRouter_ = new router.Router(handle);
+      this.budgetServiceRouter_.setIncomingReceiver(this.budgetServiceStub_);
+    }
+
+    getCost(operationType) {
+      return Promise.resolve({ cost:TEST_BUDGET_COST });
+    }
+
+    getBudget() {
+      return Promise.resolve({ budget: [ { time:TEST_BUDGET_EXPIRATION, budget_at:TEST_BUDGET_VALUE } ] });
+    }
+  }
+  // Connect to the Mojo interface.
+  return new BudgetServiceMock(mojo.interfaces);
+});