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# coding: utf-8
RSpec.describe HTTP::Request::Writer do
let(:io) { StringIO.new }
let(:body) { "" }
let(:headers) { HTTP::Headers.new }
let(:headerstart) { "GET /test HTTP/1.1" }
subject(:writer) { described_class.new(io, body, headers, headerstart) }
describe "#initalize" do
context "when body is nil" do
let(:body) { nil }
it "does not raise an error" do
expect { writer }.not_to raise_error
end
end
context "when body is a string" do
let(:body) { "string body" }
it "does not raise an error" do
expect { writer }.not_to raise_error
end
end
context "when body is an Enumerable" do
let(:body) { %w(bees cows) }
it "does not raise an error" do
expect { writer }.not_to raise_error
end
end
context "when body is not string, enumerable or nil" do
let(:body) { 123 }
it "raises an error" do
expect { writer }.to raise_error(HTTP::RequestError)
end
end
end
describe "#stream" do
context "when body is Enumerable" do
let(:body) { %w(bees cows) }
let(:headers) { HTTP::Headers.coerce "Transfer-Encoding" => "chunked" }
it "writes a chunked request from an Enumerable correctly" do
writer.stream
expect(io.string).to end_with "\r\n4\r\nbees\r\n4\r\ncows\r\n0\r\n\r\n"
end
it "writes Transfer-Encoding header only once" do
writer.stream
expect(io.string).to start_with "#{headerstart}\r\nTransfer-Encoding: chunked\r\n\r\n"
end
context "when Transfer-Encoding not set" do
let(:headers) { HTTP::Headers.new }
specify { expect { writer.stream }.to raise_error(HTTP::RequestError) }
end
context "when Transfer-Encoding is not chunked" do
let(:headers) { HTTP::Headers.coerce "Transfer-Encoding" => "gzip" }
specify { expect { writer.stream }.to raise_error(HTTP::RequestError) }
end
end
context "when body is a unicode String" do
let(:body) { "Привет, мир!" }
it "properly calculates Content-Length if needed" do
writer.stream
expect(io.string).to start_with "#{headerstart}\r\nContent-Length: 21\r\n\r\n"
end
context "when Content-Length explicitly set" do
let(:headers) { HTTP::Headers.coerce "Content-Length" => 12 }
it "keeps given value" do
writer.stream
expect(io.string).to start_with "#{headerstart}\r\nContent-Length: 12\r\n\r\n"
end
end
end
end
end
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