koa-lite/test/request/accepts.js

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