koa-lite/test/request/accepts.js

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'use strict';
const assert = require('assert');
const context = require('../helpers/context');
describe('ctx.accepts(types)', () => {
describe('with no arguments', () => {
describe('when Accept is populated', () => {
it('should return all accepted types', () => {
const ctx = context();
ctx.req.headers.accept = 'application/*;q=0.2, image/jpeg;q=0.8, text/html, text/plain';
assert.deepEqual(ctx.accepts(), ['text/html', 'text/plain', 'image/jpeg', 'application/*']);
});
});
});
describe('with no valid types', () => {
describe('when Accept is populated', () => {
it('should return false', () => {
const ctx = context();
ctx.req.headers.accept = 'application/*;q=0.2, image/jpeg;q=0.8, text/html, text/plain';
assert.equal(ctx.accepts('image/png', 'image/tiff'), false);
});
});
describe('when Accept is not populated', () => {
it('should return the first type', () => {
const ctx = context();
assert.equal(ctx.accepts('text/html', 'text/plain', 'image/jpeg', 'application/*'), 'text/html');
});
});
});
describe('when extensions are given', () => {
it('should convert to mime types', () => {
const ctx = context();
ctx.req.headers.accept = 'text/plain, text/html';
assert.equal(ctx.accepts('html'), 'html');
assert.equal(ctx.accepts('.html'), '.html');
assert.equal(ctx.accepts('txt'), 'txt');
assert.equal(ctx.accepts('.txt'), '.txt');
assert.equal(ctx.accepts('png'), false);
});
});
describe('when an array is given', () => {
it('should return the first match', () => {
const ctx = context();
ctx.req.headers.accept = 'text/plain, text/html';
assert.equal(ctx.accepts(['png', 'text', 'html']), 'text');
assert.equal(ctx.accepts(['png', 'html']), 'html');
});
});
describe('when multiple arguments are given', () => {
it('should return the first match', () => {
const ctx = context();
ctx.req.headers.accept = 'text/plain, text/html';
assert.equal(ctx.accepts('png', 'text', 'html'), 'text');
assert.equal(ctx.accepts('png', 'html'), 'html');
});
});
describe('when present in Accept as an exact match', () => {
it('should return the type', () => {
const ctx = context();
ctx.req.headers.accept = 'text/plain, text/html';
assert.equal(ctx.accepts('text/html'), 'text/html');
assert.equal(ctx.accepts('text/plain'), 'text/plain');
});
});
describe('when present in Accept as a type match', () => {
it('should return the type', () => {
const ctx = context();
ctx.req.headers.accept = 'application/json, */*';
assert.equal(ctx.accepts('text/html'), 'text/html');
assert.equal(ctx.accepts('text/plain'), 'text/plain');
assert.equal(ctx.accepts('image/png'), 'image/png');
});
});
describe('when present in Accept as a subtype match', () => {
it('should return the type', () => {
const ctx = context();
ctx.req.headers.accept = 'application/json, text/*';
assert.equal(ctx.accepts('text/html'), 'text/html');
assert.equal(ctx.accepts('text/plain'), 'text/plain');
assert.equal(ctx.accepts('image/png'), false);
assert.equal(ctx.accepts('png'), false);
});
});
});