Mailspring/spec/extension-registry-spec.coffee

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ExtensionRegistry = require('../src/extension-registry')
class TestExtension
@name: 'TestExtension'
describe 'ExtensionRegistry', ->
beforeEach ->
@originalAdapters = ExtensionRegistry._deprecationAdapters
@registry = new ExtensionRegistry.Registry('Test')
spyOn @registry, 'triggerDebounced'
describe 'Registry', ->
it 'has trigger and listen to defined', ->
expect(@registry.trigger).toBeDefined()
expect(@registry.listen).toBeDefined()
expect(@registry.listenTo).toBeDefined()
describe 'register', ->
it 'throws an exception if extension not passed', ->
expect(=> @registry.register(null)).toThrow()
it 'throws an exception if extension does not have a name', ->
expect(=> @registry.register({})).toThrow()
it 'throws an exception if extension is array', ->
expect(=> @registry.register([])).toThrow()
it 'throws an exception if extension is string', ->
expect(=> @registry.register('')).toThrow()
it 'returns itself', ->
expect(@registry.register(TestExtension)).toBe(@registry)
it 'registers extension and triggers', ->
@registry.register(TestExtension)
expect(@registry.extensions().length).toEqual 1
expect(@registry.triggerDebounced).toHaveBeenCalled()
it 'does not add extensions with the same name', ->
expect(@registry.extensions().length).toEqual 0
@registry.register(TestExtension)
expect(@registry.extensions().length).toEqual 1
@registry.register({name: 'TestExtension'})
expect(@registry.extensions().length).toEqual 1
it 'calls deprecationAdapters if present for a role', ->
adapterSpy = jasmine.createSpy('adapterSpy').andCallFake (ext) -> ext
@registry = new ExtensionRegistry.Registry('Test', adapterSpy)
spyOn @registry, 'triggerDebounced'
@registry.register(TestExtension)
expect(adapterSpy.calls.length).toEqual 1
describe 'unregister', ->
it 'unregisters the extension if it exists', ->
@registry.register(TestExtension)
@registry.unregister(TestExtension)
expect(@registry.extensions().length).toEqual 0
it 'throws if invalid extension passed', ->
expect( => @registry.unregister('Test')).toThrow()
expect( => @registry.unregister(null)).toThrow()
expect( => @registry.unregister([])).toThrow()
expect( => @registry.unregister({})).toThrow()