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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import LanguageServerProtocol
@_spi(Testing) import LanguageServerProtocolJSONRPC
import XCTest
final class MessageParsingTests: XCTestCase {
func testSplitMessage() throws {
func check(
_ string: String,
contentLen: Int? = nil,
restLen: Int?,
file: StaticString = #filePath,
line: UInt = #line
) throws {
let bytes: [UInt8] = [UInt8](string.utf8)
guard let (header, content, rest) = try bytes.jsonrpcSplitMessage() else {
XCTAssert(restLen == nil, "expected non-empty field", file: file, line: line)
return
}
XCTAssertEqual(rest.count, restLen, "rest", file: file, line: line)
XCTAssertEqual(content.count, contentLen, "content", file: file, line: line)
XCTAssertEqual(header.contentLength, contentLen, file: file, line: line)
}
func checkError(
_ string: String,
_ expected: MessageDecodingError,
file: StaticString = #filePath,
line: UInt = #line
) {
do {
_ = try [UInt8](string.utf8).jsonrpcSplitMessage()
XCTFail("missing expected error", file: file, line: line)
} catch let error as MessageDecodingError {
XCTAssertEqual(error, expected, file: file, line: line)
} catch {
XCTFail("error \(error) does not match expected \(expected)", file: file, line: line)
}
}
try check("Content-Length: 2\r\n", restLen: nil)
try check("Content-Length: 1\r\n\r\n", restLen: nil)
try check("Content-Length: 2\r\n\r\n{", restLen: nil)
try check("Content-Length: 0\r\n\r\n", contentLen: 0, restLen: 0)
try check("Content-Length: 0\r\n\r\n{}", contentLen: 0, restLen: 2)
try check("Content-Length: 1\r\n\r\n{}", contentLen: 1, restLen: 1)
try check("Content-Length: 2\r\n\r\n{}", contentLen: 2, restLen: 0)
try check("Content-Length: 2\r\n\r\n{}Co", contentLen: 2, restLen: 2)
checkError("\r\n\r\n{}", MessageDecodingError.parseError("missing Content-Length header"))
}
func testParseHeader() throws {
func check(
_ string: String,
header expected: JSONRPCMessageHeader? = nil,
restLen: Int?,
file: StaticString = #filePath,
line: UInt = #line
) throws {
let bytes: [UInt8] = [UInt8](string.utf8)
guard let (header, rest) = try bytes.jsonrcpParseHeader() else {
XCTAssert(restLen == nil, "expected non-empty field", file: file, line: line)
return
}
XCTAssertEqual(rest.count, restLen, "rest", file: file, line: line)
XCTAssertEqual(header, expected, file: file, line: line)
}
func checkErrorBytes(
_ bytes: [UInt8],
_ expected: MessageDecodingError,
file: StaticString = #filePath,
line: UInt = #line
) {
do {
_ = try bytes.jsonrcpParseHeader()
XCTFail("missing expected error", file: file, line: line)
} catch let error as MessageDecodingError {
XCTAssertEqual(error, expected, file: file, line: line)
} catch {
XCTFail("error \(error) does not match expected \(expected)", file: file, line: line)
}
}
func checkError(
_ string: String,
_ expected: MessageDecodingError,
file: StaticString = #filePath,
line: UInt = #line
) {
checkErrorBytes([UInt8](string.utf8), expected, file: file, line: line)
}
try check("", restLen: nil)
try check("C", restLen: nil)
try check("Content-Length: 1", restLen: nil)
try check("Content-Length: 1\r", restLen: nil)
try check("Content-Length: 1\r\n", restLen: nil)
try check("Content-Length: 1\r\n\r\n", header: JSONRPCMessageHeader(contentLength: 1), restLen: 0)
try check("Content-Length: 1\r\n\r\n{}", header: JSONRPCMessageHeader(contentLength: 1), restLen: 2)
try check("A:B\r\nContent-Length: 1\r\nC:D\r\n\r\n", header: JSONRPCMessageHeader(contentLength: 1), restLen: 0)
try check("Content-Length:123 \r\n\r\n", header: JSONRPCMessageHeader(contentLength: 123), restLen: 0)
checkError("Content-Length:0x1\r\n\r\n", MessageDecodingError.parseError("expected integer value in 0x1"))
checkError("Content-Length:a123\r\n\r\n", MessageDecodingError.parseError("expected integer value in a123"))
checkErrorBytes(
[UInt8]("Content-Length: ".utf8) + [0xFF] + [UInt8]("\r\n".utf8),
MessageDecodingError.parseError("expected integer value in <invalid>")
)
}
func testParseHeaderField() throws {
func check(
_ string: String,
keyLen: Int? = nil,
valueLen: Int? = nil,
restLen: Int?,
file: StaticString = #filePath,
line: UInt = #line
) throws {
let bytes: [UInt8] = [UInt8](string.utf8)
guard let (kv, rest) = try bytes.jsonrpcParseHeaderField() else {
XCTAssert(restLen == nil, "expected non-empty field", file: file, line: line)
return
}
XCTAssertEqual(rest.count, restLen, "rest", file: file, line: line)
XCTAssertEqual(kv?.key.count, keyLen, "key", file: file, line: line)
if let key = kv?.key {
XCTAssertEqual(key, bytes.prefix(key.count), file: file, line: line)
}
XCTAssertEqual(kv?.value.count, valueLen, "value", file: file, line: line)
if let value = kv?.value {
XCTAssertEqual(value, bytes.dropFirst(kv!.key.count + 1).prefix(value.count), file: file, line: line)
}
}
func checkError(
_ string: String,
_ expected: MessageDecodingError,
file: StaticString = #filePath,
line: UInt = #line
) {
do {
_ = try [UInt8](string.utf8).jsonrpcParseHeaderField()
XCTFail("missing expected error", file: file, line: line)
} catch let error as MessageDecodingError {
XCTAssertEqual(error, expected, file: file, line: line)
} catch {
XCTFail("error \(error) does not match expected \(expected)", file: file, line: line)
}
}
try check("", restLen: nil)
try check("C", restLen: nil)
try check("Content-Length", restLen: nil)
try check("Content-Length:", restLen: nil)
try check("Content-Length:a", restLen: nil)
try check("Content-Length: 1", restLen: nil)
try check("Content-Length: 1\r", restLen: nil)
try check("Content-Length: 1\r\n", keyLen: "Content-Length".count, valueLen: 2, restLen: 0)
try check("Content-Length:1\r\n", keyLen: "Content-Length".count, valueLen: 1, restLen: 0)
try check("Content-Length: 1\r\n ", keyLen: "Content-Length".count, valueLen: 2, restLen: 1)
try check("Content-Length: 1\r\n\r\n", keyLen: "Content-Length".count, valueLen: 2, restLen: 2)
try check("Unknown:asdf\r", restLen: nil)
try check("Unknown:asdf\r\n", keyLen: "Unknown".count, valueLen: 4, restLen: 0)
try check("\r", restLen: nil)
try check("\r\n", restLen: 0)
try check("\r\nC", restLen: 1)
try check("\r\nContent-Length:1\r\n", restLen: "Content-Length:1\r\n".utf8.count)
try check(":", restLen: nil)
try check(":\r\n", keyLen: 0, valueLen: 0, restLen: 0)
checkError("C\r\n", MessageDecodingError.parseError("expected ':' in message header"))
}
func testFindSubsequence() {
XCTAssertNil([0, 1, 2].firstIndex(of: [3]))
XCTAssertNil([].firstIndex(of: [3]))
XCTAssertNil([0, 1, 2].firstIndex(of: [1, 3]))
XCTAssertNil([0, 1, 2].firstIndex(of: [0, 2]))
XCTAssertNil([0, 1, 2].firstIndex(of: [2, 3]))
XCTAssertNil([0, 1].firstIndex(of: [1, 0]))
XCTAssertNil([0].firstIndex(of: [0, 1]))
XCTAssertEqual([Int]().firstIndex(of: []), 0)
XCTAssertEqual([0].firstIndex(of: []), 0)
XCTAssertEqual([0].firstIndex(of: [0]), 0)
XCTAssertEqual([0, 1].firstIndex(of: [0]), 0)
XCTAssertEqual([0, 1].firstIndex(of: [1]), 1)
XCTAssertEqual([0, 1].firstIndex(of: [0, 1]), 0)
XCTAssertEqual([0, 1, 2, 3].firstIndex(of: [0, 1]), 0)
XCTAssertEqual([0, 1, 2, 3].firstIndex(of: [0, 1, 2]), 0)
XCTAssertEqual([0, 1, 2, 3].firstIndex(of: [1, 2]), 1)
XCTAssertEqual([0, 1, 2, 3].firstIndex(of: [3]), 3)
}
func testIntFromAscii() {
XCTAssertNil(Int(ascii: ""))
XCTAssertNil(Int(ascii: "a"))
XCTAssertNil(Int(ascii: "0x1"))
XCTAssertNil(Int(ascii: " "))
XCTAssertNil(Int(ascii: "+"))
XCTAssertNil(Int(ascii: "-"))
XCTAssertNil(Int(ascii: "+ "))
XCTAssertNil(Int(ascii: "- "))
XCTAssertNil(Int(ascii: "1 1"))
XCTAssertNil(Int(ascii: "1a1"))
XCTAssertNil(Int(ascii: "1a"))
XCTAssertNil(Int(ascii: "1+"))
XCTAssertNil(Int(ascii: "+ 1"))
XCTAssertNil(Int(ascii: "- 1"))
XCTAssertNil(Int(ascii: "1-1"))
XCTAssertEqual(Int(ascii: "0"), 0)
XCTAssertEqual(Int(ascii: "1"), 1)
XCTAssertEqual(Int(ascii: "45"), 45)
XCTAssertEqual(Int(ascii: " 45 "), 45)
XCTAssertEqual(Int(ascii: "\(Int.max)"), Int.max)
XCTAssertEqual(Int(ascii: "\(Int.max-1)"), Int.max - 1)
XCTAssertEqual(Int(ascii: "\(Int.min)"), Int.min)
XCTAssertEqual(Int(ascii: "\(Int.min+1)"), Int.min + 1)
XCTAssertEqual(Int(ascii: "+0"), 0)
XCTAssertEqual(Int(ascii: "+1"), 1)
XCTAssertEqual(Int(ascii: "+45"), 45)
XCTAssertEqual(Int(ascii: " +45 "), 45)
XCTAssertEqual(Int(ascii: "-0"), 0)
XCTAssertEqual(Int(ascii: "-1"), -1)
XCTAssertEqual(Int(ascii: "-45"), -45)
XCTAssertEqual(Int(ascii: " -45 "), -45)
XCTAssertEqual(Int(ascii: "+\(Int.max)"), Int.max)
XCTAssertEqual(Int(ascii: "+\(Int.max-1)"), Int.max - 1)
XCTAssertEqual(Int(ascii: "\(Int.min)"), Int.min)
XCTAssertEqual(Int(ascii: "\(Int.min+1)"), Int.min + 1)
XCTAssertEqual(Int(ascii: "1234567890"), 1234567890)
XCTAssertEqual(Int(ascii: "\n\r \u{b}\u{d}\t45\n\t\r\u{c}"), 45)
}
}
|
