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# frozen_string_literal: true
require 'rack/utils'
RSpec.describe Faraday::NestedParamsEncoder do
it_behaves_like 'a params encoder'
it 'decodes arrays' do
query = 'a[1]=one&a[2]=two&a[3]=three'
expected = { 'a' => %w[one two three] }
expect(subject.decode(query)).to eq(expected)
end
it 'decodes hashes' do
query = 'a[b1]=one&a[b2]=two&a[b][c]=foo'
expected = { 'a' => { 'b1' => 'one', 'b2' => 'two', 'b' => { 'c' => 'foo' } } }
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested arrays rack compat' do
query = 'a[][one]=1&a[][two]=2&a[][one]=3&a[][two]=4'
expected = Rack::Utils.parse_nested_query(query)
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested array mixed types' do
query = 'a[][one]=1&a[]=2&a[]=&a[]'
expected = Rack::Utils.parse_nested_query(query)
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested ignores invalid array' do
query = '[][a]=1&b=2'
expected = { 'a' => '1', 'b' => '2' }
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested ignores repeated array notation' do
query = 'a[][][]=1'
expected = { 'a' => ['1'] }
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested ignores malformed keys' do
query = '=1&[]=2'
expected = {}
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested subkeys dont have to be in brackets' do
query = 'a[b]c[d]e=1'
expected = { 'a' => { 'b' => { 'c' => { 'd' => { 'e' => '1' } } } } }
expect(subject.decode(query)).to eq(expected)
end
it 'decodes nested final value overrides any type' do
query = 'a[b][c]=1&a[b]=2'
expected = { 'a' => { 'b' => '2' } }
expect(subject.decode(query)).to eq(expected)
end
it 'encodes rack compat' do
params = { a: [{ one: '1', two: '2' }, '3', ''] }
result = Faraday::Utils.unescape(Faraday::NestedParamsEncoder.encode(params)).split('&')
escaped = Rack::Utils.build_nested_query(params)
expected = Rack::Utils.unescape(escaped).split('&')
expect(result).to match_array(expected)
end
it 'encodes empty string array value' do
expected = 'baz=&foo%5Bbar%5D='
result = Faraday::NestedParamsEncoder.encode(foo: { bar: '' }, baz: '')
expect(result).to eq(expected)
end
it 'encodes nil array value' do
expected = 'baz&foo%5Bbar%5D'
result = Faraday::NestedParamsEncoder.encode(foo: { bar: nil }, baz: nil)
expect(result).to eq(expected)
end
it 'encodes empty array value' do
expected = 'baz%5B%5D&foo%5Bbar%5D%5B%5D'
result = Faraday::NestedParamsEncoder.encode(foo: { bar: [] }, baz: [])
expect(result).to eq(expected)
end
it 'encodes boolean values' do
params = { a: true, b: false }
expect(subject.encode(params)).to eq('a=true&b=false')
end
it 'encodes boolean values in array' do
params = { a: [true, false] }
expect(subject.encode(params)).to eq('a%5B%5D=true&a%5B%5D=false')
end
it 'encodes unsorted when asked' do
params = { b: false, a: true }
expect(subject.encode(params)).to eq('a=true&b=false')
Faraday::NestedParamsEncoder.sort_params = false
expect(subject.encode(params)).to eq('b=false&a=true')
Faraday::NestedParamsEncoder.sort_params = true
end
it 'encodes arrays indices when asked' do
params = { a: [0, 1, 2] }
expect(subject.encode(params)).to eq('a%5B%5D=0&a%5B%5D=1&a%5B%5D=2')
Faraday::NestedParamsEncoder.array_indices = true
expect(subject.encode(params)).to eq('a%5B0%5D=0&a%5B1%5D=1&a%5B2%5D=2')
Faraday::NestedParamsEncoder.array_indices = false
end
shared_examples 'a wrong decoding' do
it do
expect { subject.decode(query) }.to raise_error(TypeError) do |e|
expect(e.message).to eq(error_message)
end
end
end
context 'when expecting hash but getting string' do
let(:query) { 'a=1&a[b]=2' }
let(:error_message) { "expected Hash (got String) for param `a'" }
it_behaves_like 'a wrong decoding'
end
context 'when expecting hash but getting array' do
let(:query) { 'a[]=1&a[b]=2' }
let(:error_message) { "expected Hash (got Array) for param `a'" }
it_behaves_like 'a wrong decoding'
end
context 'when expecting nested hash but getting non nested' do
let(:query) { 'a[b]=1&a[b][c]=2' }
let(:error_message) { "expected Hash (got String) for param `b'" }
it_behaves_like 'a wrong decoding'
end
context 'when expecting array but getting hash' do
let(:query) { 'a[b]=1&a[]=2' }
let(:error_message) { "expected Array (got Hash) for param `a'" }
it_behaves_like 'a wrong decoding'
end
context 'when expecting array but getting string' do
let(:query) { 'a=1&a[]=2' }
let(:error_message) { "expected Array (got String) for param `a'" }
it_behaves_like 'a wrong decoding'
end
end
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