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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2017-2018 Apple Inc. and the SwiftNIO project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
import XCTest
@testable import NIO
@testable import NIOHTTP1
class HTTPHeadersTest : XCTestCase {
func testCasePreservedButInsensitiveLookup() {
let originalHeaders = [ ("User-Agent", "1"),
("host", "2"),
("X-SOMETHING", "3"),
("SET-COOKIE", "foo=bar"),
("Set-Cookie", "buz=cux")]
let headers = HTTPHeaders(originalHeaders)
// looking up headers value is case-insensitive
XCTAssertEqual(["1"], headers["User-Agent"])
XCTAssertEqual(["1"], headers["User-agent"])
XCTAssertEqual(["2"], headers["Host"])
XCTAssertEqual(["foo=bar", "buz=cux"], headers["set-cookie"])
for (key,value) in headers {
switch key {
case "User-Agent":
XCTAssertEqual("1", value)
case "host":
XCTAssertEqual("2", value)
case "X-SOMETHING":
XCTAssertEqual("3", value)
case "SET-COOKIE":
XCTAssertEqual("foo=bar", value)
case "Set-Cookie":
XCTAssertEqual("buz=cux", value)
default:
XCTFail("Unexpected key: \(key)")
}
}
}
func testDictionaryLiteralAlternative() {
let headers: HTTPHeaders = [ "User-Agent": "1",
"host": "2",
"X-SOMETHING": "3",
"SET-COOKIE": "foo=bar",
"Set-Cookie": "buz=cux"]
// looking up headers value is case-insensitive
XCTAssertEqual(["1"], headers["User-Agent"])
XCTAssertEqual(["1"], headers["User-agent"])
XCTAssertEqual(["2"], headers["Host"])
XCTAssertEqual(["foo=bar", "buz=cux"], headers["set-cookie"])
for (key,value) in headers {
switch key {
case "User-Agent":
XCTAssertEqual("1", value)
case "host":
XCTAssertEqual("2", value)
case "X-SOMETHING":
XCTAssertEqual("3", value)
case "SET-COOKIE":
XCTAssertEqual("foo=bar", value)
case "Set-Cookie":
XCTAssertEqual("buz=cux", value)
default:
XCTFail("Unexpected key: \(key)")
}
}
}
func testWriteHeadersSeparately() {
let originalHeaders = [ ("User-Agent", "1"),
("host", "2"),
("X-SOMETHING", "3"),
("X-Something", "4"),
("SET-COOKIE", "foo=bar"),
("Set-Cookie", "buz=cux")]
let headers = HTTPHeaders(originalHeaders)
let channel = EmbeddedChannel()
var buffer = channel.allocator.buffer(capacity: 1024)
buffer.write(headers: headers)
let writtenBytes = buffer.getString(at: buffer.readerIndex, length: buffer.readableBytes)!
XCTAssertTrue(writtenBytes.contains("User-Agent: 1\r\n"))
XCTAssertTrue(writtenBytes.contains("host: 2\r\n"))
XCTAssertTrue(writtenBytes.contains("X-SOMETHING: 3\r\n"))
XCTAssertTrue(writtenBytes.contains("X-Something: 4\r\n"))
XCTAssertTrue(writtenBytes.contains("SET-COOKIE: foo=bar\r\n"))
XCTAssertTrue(writtenBytes.contains("Set-Cookie: buz=cux\r\n"))
XCTAssertTrue(try channel.finish().isClean)
}
func testRevealHeadersSeparately() {
let originalHeaders = [ ("User-Agent", "1"),
("host", "2"),
("X-SOMETHING", "3, 4"),
("X-Something", "5")]
let headers = HTTPHeaders(originalHeaders)
XCTAssertEqual(headers[canonicalForm: "user-agent"], ["1"])
XCTAssertEqual(headers[canonicalForm: "host"], ["2"])
XCTAssertEqual(headers[canonicalForm: "x-something"], ["3", "4", "5"])
XCTAssertEqual(headers[canonicalForm: "foo"], [])
}
func testSubscriptDoesntSplitHeaders() {
let originalHeaders = [ ("User-Agent", "1"),
("host", "2"),
("X-SOMETHING", "3, 4"),
("X-Something", "5")]
let headers = HTTPHeaders(originalHeaders)
XCTAssertEqual(headers["user-agent"], ["1"])
XCTAssertEqual(headers["host"], ["2"])
XCTAssertEqual(headers["x-something"], ["3, 4", "5"])
XCTAssertEqual(headers["foo"], [])
}
func testCanonicalisationDoesntHappenForSetCookie() {
let originalHeaders = [ ("User-Agent", "1"),
("host", "2"),
("Set-Cookie", "foo=bar; expires=Sun, 17-Mar-2013 13:49:50 GMT"),
("Set-Cookie", "buz=cux; expires=Fri, 13 Oct 2017 21:21:41 GMT")]
let headers = HTTPHeaders(originalHeaders)
XCTAssertEqual(headers[canonicalForm: "user-agent"], ["1"])
XCTAssertEqual(headers[canonicalForm: "host"], ["2"])
XCTAssertEqual(headers[canonicalForm: "set-cookie"], ["foo=bar; expires=Sun, 17-Mar-2013 13:49:50 GMT",
"buz=cux; expires=Fri, 13 Oct 2017 21:21:41 GMT"])
}
func testTrimWhitespaceWorksOnEmptyString() {
let expected = ""
let actual = String("".trimASCIIWhitespace())
XCTAssertEqual(expected, actual)
}
func testTrimWhitespaceWorksOnOnlyWhitespace() {
let expected = ""
for wsString in [" ", "\t", "\r", "\n", "\r\n", "\n\r", " \r\n \n\r\t\r\t\n"] {
let actual = String(wsString.trimASCIIWhitespace())
XCTAssertEqual(expected, actual)
}
}
func testTrimWorksWithCharactersInTheMiddleAndWhitespaceAround() {
let expected = "x"
let actual = String(" x\n\n\n".trimASCIIWhitespace())
XCTAssertEqual(expected, actual)
}
func testContains() {
let originalHeaders = [ ("X-Header", "1"),
("X-SomeHeader", "3"),
("X-Header", "2")]
let headers = HTTPHeaders(originalHeaders)
XCTAssertTrue(headers.contains(name: "x-header"))
XCTAssertTrue(headers.contains(name: "X-Header"))
XCTAssertFalse(headers.contains(name: "X-NonExistingHeader"))
}
func testFirst() throws {
let headers = HTTPHeaders([
(":method", "GET"),
("foo", "bar"),
("foo", "baz"),
("custom-key", "value-1,value-2")
])
XCTAssertEqual(headers.first(name: ":method"), "GET")
XCTAssertEqual(headers.first(name: "Foo"), "bar")
XCTAssertEqual(headers.first(name: "custom-key"), "value-1,value-2")
XCTAssertNil(headers.first(name: "not-present"))
}
func testKeepAliveStateStartsWithClose() {
var headers = HTTPHeaders([("Connection", "close")])
XCTAssertEqual("close", headers["connection"].first)
XCTAssertFalse(headers.isKeepAlive(version: .http1_1))
headers.replaceOrAdd(name: "connection", value: "keep-alive")
XCTAssertEqual("keep-alive", headers["connection"].first)
XCTAssertTrue(headers.isKeepAlive(version: .http1_1))
headers.remove(name: "connection")
XCTAssertTrue(headers.isKeepAlive(version: .http1_1))
XCTAssertFalse(headers.isKeepAlive(version: .http1_0))
}
func testKeepAliveStateStartsWithKeepAlive() {
var headers = HTTPHeaders([("Connection", "keep-alive")])
XCTAssertEqual("keep-alive", headers["connection"].first)
XCTAssertTrue(headers.isKeepAlive(version: .http1_1))
headers.replaceOrAdd(name: "connection", value: "close")
XCTAssertEqual("close", headers["connection"].first)
XCTAssertFalse(headers.isKeepAlive(version: .http1_1))
headers.remove(name: "connection")
XCTAssertTrue(headers.isKeepAlive(version: .http1_1))
XCTAssertFalse(headers.isKeepAlive(version: .http1_0))
}
func testKeepAliveStateHasKeepAlive() {
let headers = HTTPHeaders([("Connection", "other, keEP-alive"),
("Content-Type", "text/html"),
("Connection", "server, x-options")])
XCTAssertTrue(headers.isKeepAlive(version: .http1_1))
}
func testKeepAliveStateHasClose() {
let headers = HTTPHeaders([("Connection", "x-options, other"),
("Content-Type", "text/html"),
("Connection", "server, clOse")])
XCTAssertFalse(headers.isKeepAlive(version: .http1_1))
}
func testRandomAccess() {
let originalHeaders = [ ("X-first", "one"),
("X-second", "two")]
let headers = HTTPHeaders(originalHeaders)
XCTAssertEqual(headers[headers.startIndex].name, originalHeaders.first?.0)
XCTAssertEqual(headers[headers.startIndex].value, originalHeaders.first?.1)
XCTAssertEqual(headers[headers.index(before: headers.endIndex)].name, originalHeaders.last?.0)
XCTAssertEqual(headers[headers.index(before: headers.endIndex)].value, originalHeaders.last?.1)
let beforeLast = headers[headers.index(before: headers.endIndex)]
XCTAssertEqual(beforeLast.name, originalHeaders[originalHeaders.endIndex - 1].0)
XCTAssertEqual(beforeLast.value, originalHeaders[originalHeaders.endIndex - 1].1)
let afterFirst = headers[headers.index(after: headers.startIndex)]
XCTAssertEqual(afterFirst.name, originalHeaders[originalHeaders.startIndex + 1].0)
XCTAssertEqual(afterFirst.value, originalHeaders[originalHeaders.startIndex + 1].1)
}
func testCanBeSeededWithKeepAliveState() {
// we may later on decide that this test doesn't make sense but for now we want to keep the seeding behaviour.
let headersSeededWithClose = HTTPHeaders([], keepAliveState: .close)
XCTAssertEqual(false, headersSeededWithClose.isKeepAlive(version: .init(major: 0, minor: 0)))
let headersSeededWithKeepAlive = HTTPHeaders([], keepAliveState: .keepAlive)
XCTAssertEqual(true, headersSeededWithKeepAlive.isKeepAlive(version: .init(major: 0, minor: 0)))
}
func testSeedDominatesActualValue() {
// we may later on decide that this test doesn't make sense but for now we want to keep the seeding behaviour
let headersSeededWithClose = HTTPHeaders([], keepAliveState: .close)
XCTAssertEqual(false, headersSeededWithClose.isKeepAlive(version: .http1_1))
let headersSeededWithKeepAlive = HTTPHeaders([], keepAliveState: .keepAlive)
XCTAssertEqual(true, headersSeededWithKeepAlive.isKeepAlive(version: .http1_0))
}
func testSeedDominatesEvenAfterMutation() {
// we may later on decide that this test doesn't make sense but for now we want to keep the seeding behaviour
var headersSeededWithClose = HTTPHeaders([], keepAliveState: .close)
headersSeededWithClose.add(name: "foo", value: "bar")
headersSeededWithClose.add(name: "bar", value: "qux")
headersSeededWithClose.remove(name: "bar")
XCTAssertEqual(false, headersSeededWithClose.isKeepAlive(version: .http1_1))
var headersSeededWithKeepAlive = HTTPHeaders([], keepAliveState: .keepAlive)
headersSeededWithKeepAlive.add(name: "foo", value: "bar")
headersSeededWithKeepAlive.add(name: "bar", value: "qux")
headersSeededWithKeepAlive.remove(name: "bar")
XCTAssertEqual(true, headersSeededWithKeepAlive.isKeepAlive(version: .http1_0))
}
func testSeedGetsUpdatedToDefaultOnConnectionHeaderModification() {
var headersSeededWithClose = HTTPHeaders([], keepAliveState: .close)
headersSeededWithClose.add(name: "connection", value: "bar")
XCTAssertEqual(true, headersSeededWithClose.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, headersSeededWithClose.isKeepAlive(version: .http1_0))
var headersSeededWithKeepAlive = HTTPHeaders([], keepAliveState: .keepAlive)
headersSeededWithKeepAlive.add(name: "connection", value: "bar")
XCTAssertEqual(true, headersSeededWithKeepAlive.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, headersSeededWithKeepAlive.isKeepAlive(version: .http1_0))
}
func testSeedGetsUpdatedToWhateverTheHeaderSaysIfPresent() {
var headersSeededWithClose = HTTPHeaders([], keepAliveState: .close)
headersSeededWithClose.add(name: "connection", value: "bar,keep-alive,true")
XCTAssertEqual(true, headersSeededWithClose.isKeepAlive(version: .http1_1))
XCTAssertEqual(true, headersSeededWithClose.isKeepAlive(version: .http1_0))
var headersSeededWithKeepAlive = HTTPHeaders([], keepAliveState: .keepAlive)
headersSeededWithKeepAlive.add(name: "connection", value: "bar,close,true")
XCTAssertEqual(false, headersSeededWithKeepAlive.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, headersSeededWithKeepAlive.isKeepAlive(version: .http1_0))
}
func testWeDefaultToCloseIfDoesNotMakeSense() {
var nonSenseInOneHeaderCK = HTTPHeaders([])
nonSenseInOneHeaderCK.add(name: "connection", value: "close,keep-alive")
XCTAssertEqual(false, nonSenseInOneHeaderCK.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, nonSenseInOneHeaderCK.isKeepAlive(version: .http1_0))
var nonSenseInMultipleHeadersCK = HTTPHeaders([])
nonSenseInMultipleHeadersCK.add(name: "connection", value: "close")
nonSenseInMultipleHeadersCK.add(name: "connection", value: "keep-alive")
XCTAssertEqual(false, nonSenseInMultipleHeadersCK.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, nonSenseInMultipleHeadersCK.isKeepAlive(version: .http1_0))
var nonSenseInOneHeaderKC = HTTPHeaders([])
nonSenseInOneHeaderKC.add(name: "connection", value: "keep-alive,close")
XCTAssertEqual(false, nonSenseInOneHeaderKC.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, nonSenseInOneHeaderKC.isKeepAlive(version: .http1_0))
var nonSenseInMultipleHeadersKC = HTTPHeaders([])
nonSenseInMultipleHeadersKC.add(name: "connection", value: "keep-alive")
nonSenseInMultipleHeadersKC.add(name: "connection", value: "close")
XCTAssertEqual(false, nonSenseInMultipleHeadersKC.isKeepAlive(version: .http1_1))
XCTAssertEqual(false, nonSenseInMultipleHeadersKC.isKeepAlive(version: .http1_0))
}
func testAddingSequenceOfPairs() {
var headers = HTTPHeaders([], keepAliveState: .keepAlive)
let fooBar = [("foo", "bar"), ("bar", "qux"), ("connection", "foo")]
headers.add(contentsOf: fooBar)
XCTAssertEqual(["bar"], headers["foo"])
XCTAssertEqual(["qux"], headers["bar"])
XCTAssertEqual(.unknown, headers.keepAliveState)
}
func testAddingOtherHTTPHeader() {
var fooBarHeaders = HTTPHeaders([("foo", "bar"), ("bar", "qux")], keepAliveState: .keepAlive)
let bazHeaders = HTTPHeaders([("bar", "baz"), ("baz", "bazzy")], keepAliveState: .unknown)
fooBarHeaders.add(contentsOf: bazHeaders)
XCTAssertEqual(["bar"], fooBarHeaders["foo"])
XCTAssertEqual(["qux", "baz"], fooBarHeaders["bar"])
XCTAssertEqual(["bazzy"], fooBarHeaders["baz"])
XCTAssertEqual(.unknown, fooBarHeaders.keepAliveState)
}
func testCapacity() {
// no headers
var headers = HTTPHeaders()
XCTAssertEqual(headers.capacity, 0)
// reserve capacity
headers.reserveCapacity(5)
XCTAssertEqual(headers.capacity, 5)
// initialize with some headers
headers = HTTPHeaders([("foo", "bar")])
XCTAssertEqual(headers.capacity, 1)
// reserve more capacity
headers.reserveCapacity(4)
XCTAssertEqual(headers.capacity, 4)
}
}
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