forked from public/fvtt-cthulhu-eternal
91 lines
2.0 KiB
JavaScript
91 lines
2.0 KiB
JavaScript
'use strict'
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const test = require('tape')
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const { mockLevel } = require('../util')
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test('defer() requires valid function argument', function (t) {
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t.plan(7)
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const db = mockLevel()
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for (const invalid of [123, true, false, null, undefined, {}]) {
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try {
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db.defer(invalid)
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} catch (err) {
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t.is(err.message, 'The first argument must be a function')
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}
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}
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db.close(t.ifError.bind(t))
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})
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test('defer() custom operation', function (t) {
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t.plan(6)
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const db = mockLevel({
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custom (arg, callback) {
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if (this.status === 'opening') {
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t.is(arg, 123)
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this.defer(() => this.custom(456, callback))
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} else {
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t.is(db.status, 'open')
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t.is(arg, 456)
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this.nextTick(callback, null, 987)
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}
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}
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})
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db.custom(123, function (err, result) {
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t.ifError(err, 'no custom() error')
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t.is(result, 987, 'result ok')
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db.close(t.ifError.bind(t))
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})
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})
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test('defer() custom operation with failed open', function (t) {
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t.plan(4)
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const db = mockLevel({
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_open (options, callback) {
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t.pass('opened')
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this.nextTick(callback, new Error('_open error'))
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},
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custom (arg, callback) {
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if (this.status === 'opening') {
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this.defer(() => this.custom(arg, callback))
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} else {
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t.is(db.status, 'closed')
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this.nextTick(callback, new Error('Database is not open (x)'))
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}
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}
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})
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db.custom(123, function (err, result) {
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t.is(err && err.message, 'Database is not open (x)')
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t.is(result, undefined, 'result ok')
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})
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})
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test('defer() can drop custom synchronous operation', function (t) {
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t.plan(3)
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const db = mockLevel({
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_open (options, callback) {
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t.pass('opened')
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this.nextTick(callback, new Error('_open error'))
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},
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custom (arg) {
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if (this.status === 'opening') {
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this.defer(() => this.custom(arg * 2))
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} else {
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// Handling other states is a userland responsibility
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t.is(db.status, 'closed')
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t.is(arg, 246)
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}
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}
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})
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db.custom(123)
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})
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