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chat_service.spec.js
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chat_service.spec.js
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import chatService from '../../../../../src/services/chat_service/chat_service.js'
const message1 = {
id: '9wLkdcmQXD21Oy8lEX',
idempotency_key: '1',
created_at: (new Date('2020-06-22T18:45:53.000Z'))
}
const message2 = {
id: '9wLkdp6ihaOVdNj8Wu',
idempotency_key: '2',
account_id: '9vmRb29zLQReckr5ay',
created_at: (new Date('2020-06-22T18:45:56.000Z'))
}
const message3 = {
id: '9wLke9zL4Dy4OZR2RM',
idempotency_key: '3',
account_id: '9vmRb29zLQReckr5ay',
created_at: (new Date('2020-07-22T18:45:59.000Z'))
}
describe('chatService', () => {
describe('.add', () => {
it("Doesn't add duplicates", () => {
const chat = chatService.empty()
chatService.add(chat, { messages: [ message1 ] })
chatService.add(chat, { messages: [ message1 ] })
expect(chat.messages.length).to.eql(1)
chatService.add(chat, { messages: [ message2 ] })
expect(chat.messages.length).to.eql(2)
})
it('Updates minId and lastMessage and newMessageCount', () => {
const chat = chatService.empty()
chatService.add(chat, { messages: [ message1 ] })
expect(chat.maxId).to.eql(message1.id)
expect(chat.minId).to.eql(message1.id)
expect(chat.newMessageCount).to.eql(1)
chatService.add(chat, { messages: [ message2 ] })
expect(chat.maxId).to.eql(message2.id)
expect(chat.minId).to.eql(message1.id)
expect(chat.newMessageCount).to.eql(2)
chatService.resetNewMessageCount(chat)
expect(chat.newMessageCount).to.eql(0)
expect(chat.lastSeenMessageId).to.eql(message2.id)
// Add message with higher id
chatService.add(chat, { messages: [ message3 ] })
expect(chat.newMessageCount).to.eql(1)
})
})
describe('.delete', () => {
it('Updates minId and lastMessage', () => {
const chat = chatService.empty()
chatService.add(chat, { messages: [ message1 ] })
chatService.add(chat, { messages: [ message2 ] })
chatService.add(chat, { messages: [ message3 ] })
expect(chat.maxId).to.eql(message3.id)
expect(chat.minId).to.eql(message1.id)
chatService.deleteMessage(chat, message3.id)
expect(chat.maxId).to.eql(message2.id)
expect(chat.minId).to.eql(message1.id)
chatService.deleteMessage(chat, message1.id)
expect(chat.maxId).to.eql(message2.id)
expect(chat.minId).to.eql(message2.id)
})
})
describe('.getView', () => {
it('Inserts date separators', () => {
const chat = chatService.empty()
chatService.add(chat, { messages: [ message1 ] })
chatService.add(chat, { messages: [ message2 ] })
chatService.add(chat, { messages: [ message3 ] })
const view = chatService.getView(chat)
expect(view.map(i => i.type)).to.eql(['date', 'message', 'message', 'date', 'message'])
})
})
describe('.cullOlderMessages', () => {
it('keeps 50 newest messages and idIndex matches', () => {
const chat = chatService.empty()
for (let i = 100; i > 0; i--) {
// Use decimal values with toFixed to hack together constant length predictable strings
chatService.add(chat, { messages: [{ ...message1, id: 'a' + (i / 1000).toFixed(3), idempotency_key: i }] })
}
chatService.cullOlderMessages(chat)
expect(chat.messages.length).to.eql(50)
expect(chat.messages[0].id).to.eql('a0.051')
expect(chat.minId).to.eql('a0.051')
expect(chat.messages[49].id).to.eql('a0.100')
expect(Object.keys(chat.idIndex).length).to.eql(50)
})
})
})

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