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test(module-loader): add test for two modules loaded at once

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This commit is contained in:
Brandy Carney
2017-03-07 10:46:10 -05:00
parent 17359b7b8c
commit 759fe607c8
1 changed files with 56 additions and 11 deletions
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67
src/util/test/module-loader.spec.ts
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@ -10,14 +10,14 @@ describe('module-loader', () => {
it('should call ngModuleLoader and receive a promise back', (done: Function) => { it('should call ngModuleLoader and receive a promise back', (done: Function) => {
spyOn(ngModuleLoader, 'load').and.returnValue(Promise.resolve()); spyOn(ngModuleLoader, 'load').and.returnValue(Promise.resolve());
const knownPathPrefix = '../some/known/path'; let pathPrefix = '../some/known/path';
const knownExportSuffix = 'SomeModule'; let exportSuffix = 'SomeModule';
const loadChildrenValue = knownPathPrefix + '#' + knownExportSuffix; let loadChildren = pathPrefix + '#' + exportSuffix;
const promise = moduleLoader.load(loadChildrenValue); let promise = moduleLoader.load(loadChildren);
promise.then((response) => { promise.then((response) => {
expect(ngModuleLoader.load).toHaveBeenCalledWith(knownPathPrefix, knownExportSuffix); expect(ngModuleLoader.load).toHaveBeenCalledWith(pathPrefix, exportSuffix);
}).catch((err: Error) => { }).catch((err: Error) => {
done(err); done(err);
}); });
@ -33,21 +33,66 @@ describe('module-loader', () => {
spyOn(ngModuleLoader, 'load').and.returnValue(promise); spyOn(ngModuleLoader, 'load').and.returnValue(promise);
const knownPathPrefix = '../some/known/path'; let pathPrefix = '../some/known/path';
const knownExportSuffix = 'SomeModule'; let exportSuffix = 'SomeModule';
const loadChildrenValue = knownPathPrefix + '#' + knownExportSuffix; let loadChildren = pathPrefix + '#' + exportSuffix;
promise = moduleLoader.load(loadChildrenValue); promise = moduleLoader.load(loadChildren);
// the promise is not resolved // the promise is not resolved
let secondPromise = moduleLoader.load(loadChildrenValue); let secondPromise = moduleLoader.load(loadChildren);
// we would expect the same promise to be returned both times // The promise returned should be the cached promise
expect(promise).toEqual(secondPromise); expect(promise).toEqual(secondPromise);
expect(ngModuleLoader.load).toHaveBeenCalledTimes(1); expect(ngModuleLoader.load).toHaveBeenCalledTimes(1);
}); });
it('should call the ngModuleLoader twice and return the active request', () => {
let resolve: any = null;
let reject: any = null;
let promise = new Promise((scopedResolved, scopedReject) => {
resolve = scopedResolved;
reject = scopedReject;
});
let promise2 = new Promise((scopedResolved, scopedReject) => {
resolve = scopedResolved;
reject = scopedReject;
});
spyOn(ngModuleLoader, 'load').and.returnValue(promise);
// Load the first module
let pathPrefix = '../some/known/path';
let exportSuffix = 'SomeModule';
let loadChildren = pathPrefix + '#' + exportSuffix;
promise = moduleLoader.load(loadChildren);
expect(ngModuleLoader.load).toHaveBeenCalledWith(pathPrefix, exportSuffix);
// Load the second module
let pathPrefix2 = '../another/known/path';
let exportSuffix2 = 'AnotherModule';
let loadChildren2 = pathPrefix2 + '#' + exportSuffix2;
promise2 = moduleLoader.load(loadChildren2);
expect(ngModuleLoader.load).toHaveBeenCalledWith(pathPrefix2, exportSuffix2);
// Load the first module before the promise has resolved
let secondPromise = moduleLoader.load(loadChildren);
// The promise returned from the first module should be the cached promise
expect(promise).toEqual(secondPromise);
// Load the second module before the promise has resolved
let thirdPromise = moduleLoader.load(loadChildren2);
// The promise returned from the second module should be the cached promise
expect(promise2).toEqual(thirdPromise);
expect(ngModuleLoader.load).toHaveBeenCalledTimes(2);
});
}); });
var moduleLoader: ModuleLoader; var moduleLoader: ModuleLoader;