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JobExecutorTests.swift
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JobExecutorTests.swift
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//===--------------- JobExecutorTests.swift - Swift Execution Tests -------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 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 XCTest
import TSCBasic
import Foundation
@_spi(Testing) import SwiftDriver
import SwiftDriverExecution
import TestUtilities
extension Job.ArgTemplate: ExpressibleByStringLiteral {
public init(stringLiteral value: String) {
self = .flag(value)
}
}
class JobCollectingDelegate: JobExecutionDelegate {
struct StubProcess: ProcessProtocol {
static func launchProcess(arguments: [String], env: [String : String]) throws -> StubProcess {
return .init()
}
static func launchProcessAndWriteInput(arguments: [String], env: [String : String],
inputFileHandle: FileHandle) throws -> StubProcess {
return .init()
}
var processID: TSCBasic.Process.ProcessID { .init(-1) }
func waitUntilExit() throws -> ProcessResult {
return ProcessResult(
arguments: [],
environment: [:],
exitStatus: .terminated(code: EXIT_SUCCESS),
output: Result.success(ByteString("test").contents),
stderrOutput: Result.success([])
)
}
}
var started: [Job] = []
var finished: [(Job, ProcessResult)] = []
func jobFinished(job: Job, result: ProcessResult, pid: Int) {
finished.append((job, result))
}
func jobStarted(job: Job, arguments: [String], pid: Int) {
started.append(job)
}
func jobSkipped(job: Job) {}
}
extension DarwinToolchain {
/// macOS SDK path, for testing only.
var sdk: Result<AbsolutePath, Swift.Error> {
Result {
let result = try executor.checkNonZeroExit(
args: "xcrun", "-sdk", "macosx", "--show-sdk-path",
environment: env
).spm_chomp()
return AbsolutePath(result)
}
}
/// macOS resource directory, for testing only.
var resourcesDirectory: Result<AbsolutePath, Swift.Error> {
return Result {
try AbsolutePath("../../lib/swift/macosx", relativeTo: getToolPath(.swiftCompiler))
}
}
var clangRT: Result<AbsolutePath, Error> {
resourcesDirectory.map { AbsolutePath("../clang/lib/darwin/libclang_rt.osx.a", relativeTo: $0) }
}
var compatibility50: Result<AbsolutePath, Error> {
resourcesDirectory.map { $0.appending(component: "libswiftCompatibility50.a") }
}
var compatibilityDynamicReplacements: Result<AbsolutePath, Error> {
resourcesDirectory.map { $0.appending(component: "libswiftCompatibilityDynamicReplacements.a") }
}
}
final class JobExecutorTests: XCTestCase {
func testDarwinBasic() throws {
#if os(macOS)
let hostTriple = try Driver(args: ["swiftc", "test.swift"]).hostTriple
let executor = try SwiftDriverExecutor(diagnosticsEngine: DiagnosticsEngine(),
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: ProcessEnv.vars)
let toolchain = DarwinToolchain(env: ProcessEnv.vars, executor: executor)
try withTemporaryDirectory { path in
let foo = path.appending(component: "foo.swift")
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(foo) {
$0 <<< "let foo = 5"
}
try localFileSystem.writeFileContents(main) {
$0 <<< "print(foo)"
}
let exec = path.appending(component: "main")
let resolver = try ArgsResolver(fileSystem: localFileSystem)
resolver.pathMapping = [
.relative(RelativePath("foo.swift")): foo.pathString,
.relative(RelativePath("main.swift")): main.pathString,
.relative(RelativePath("main")): exec.pathString,
]
let inputs: [String: TypedVirtualPath] = [
"foo" : .init(file: VirtualPath.relative(RelativePath( "foo.swift")).intern(), type: .swift),
"main": .init(file: VirtualPath.relative(RelativePath("main.swift")).intern(), type: .swift)
]
let compileFoo = Job(
moduleName: "main",
kind: .compile,
tool: try toolchain.resolvedTool(.swiftCompiler),
commandLine: [
"-frontend",
"-c",
"-primary-file",
.path(inputs[ "foo"]!.file),
.path(inputs["main"]!.file),
"-target", .flag(hostTriple.triple),
"-enable-objc-interop",
"-sdk",
.path(.absolute(try toolchain.sdk.get())),
"-module-name", "main",
"-o", .path(.temporary(RelativePath("foo.o"))),
],
inputs: Array(inputs.values),
primaryInputs: [inputs["foo"]!],
outputs: [.init(file: VirtualPath.temporary(RelativePath("foo.o")).intern(), type: .object)]
)
let compileMain = Job(
moduleName: "main",
kind: .compile,
tool: try toolchain.resolvedTool(.swiftCompiler),
commandLine: [
"-frontend",
"-c",
.path(.relative(RelativePath("foo.swift"))),
"-primary-file",
.path(inputs["main"]!.file),
"-target", .flag(hostTriple.triple),
"-enable-objc-interop",
"-sdk",
.path(.absolute(try toolchain.sdk.get())),
"-module-name", "main",
"-o", .path(.temporary(RelativePath("main.o"))),
],
inputs: Array(inputs.values),
primaryInputs: [inputs["main"]!],
outputs: [.init(file: VirtualPath.temporary(RelativePath("main.o")).intern(), type: .object)]
)
let link = Job(
moduleName: "main",
kind: .link,
tool: try toolchain.resolvedTool(.dynamicLinker),
commandLine: [
.path(.temporary(RelativePath("foo.o"))),
.path(.temporary(RelativePath("main.o"))),
.path(.absolute(try toolchain.clangRT.get())),
"-syslibroot", .path(.absolute(try toolchain.sdk.get())),
"-lobjc", "-lSystem", "-arch", .flag(hostTriple.archName),
"-L", .path(.absolute(try toolchain.resourcesDirectory.get())),
"-L", .path(.absolute(try toolchain.sdkStdlib(sdk: toolchain.sdk.get()))),
"-rpath", "/usr/lib/swift", "-macosx_version_min", "10.14.0", "-o",
.path(.relative(RelativePath("main"))),
],
inputs: [
.init(file: VirtualPath.temporary(RelativePath("foo.o")).intern(), type: .object),
.init(file: VirtualPath.temporary(RelativePath("main.o")).intern(), type: .object),
],
primaryInputs: [],
outputs: [.init(file: VirtualPath.relative(RelativePath("main")).intern(), type: .image)]
)
let delegate = JobCollectingDelegate()
let executor = MultiJobExecutor(workload: .all([compileFoo, compileMain, link]),
resolver: resolver, executorDelegate: delegate, diagnosticsEngine: DiagnosticsEngine())
try executor.execute(env: toolchain.env, fileSystem: localFileSystem)
let output = try TSCBasic.Process.checkNonZeroExit(args: exec.pathString)
XCTAssertEqual(output, "5\n")
XCTAssertEqual(delegate.started.count, 3)
let fooObject = try resolver.resolve(.path(.temporary(RelativePath("foo.o"))))
XCTAssertTrue(localFileSystem.exists(AbsolutePath(fooObject)), "expected foo.o to be present in the temporary directory")
try resolver.removeTemporaryDirectory()
XCTAssertFalse(localFileSystem.exists(AbsolutePath(fooObject)), "expected foo.o to be removed from the temporary directory")
}
#endif
}
/// Ensure the executor is capable of forwarding its standard input to the compile job that requires it.
func testInputForwarding() throws {
#if os(macOS)
let hostTriple = try Driver(args: ["swiftc", "test.swift"]).hostTriple
let executor = try SwiftDriverExecutor(diagnosticsEngine: DiagnosticsEngine(),
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: ProcessEnv.vars)
let toolchain = DarwinToolchain(env: ProcessEnv.vars, executor: executor)
try withTemporaryDirectory { path in
let exec = path.appending(component: "main")
let compile = Job(
moduleName: "main",
kind: .compile,
tool: try toolchain.resolvedTool(.swiftCompiler),
commandLine: [
"-frontend",
"-c",
"-primary-file",
// This compile job must read the input from STDIN
"-",
"-target", .flag(hostTriple.triple),
"-enable-objc-interop",
"-sdk",
.path(.absolute(try toolchain.sdk.get())),
"-module-name", "main",
"-o", .path(.temporary(RelativePath("main.o"))),
],
inputs: [TypedVirtualPath(file: .standardInput, type: .swift )],
primaryInputs: [TypedVirtualPath(file: .standardInput, type: .swift )],
outputs: [.init(file: VirtualPath.temporary(RelativePath("main.o")).intern(),
type: .object)]
)
let link = Job(
moduleName: "main",
kind: .link,
tool: try toolchain.resolvedTool(.dynamicLinker),
commandLine: [
.path(.temporary(RelativePath("main.o"))),
.path(.absolute(try toolchain.clangRT.get())),
"-syslibroot", .path(.absolute(try toolchain.sdk.get())),
"-lobjc", "-lSystem", "-arch", .flag(hostTriple.archName),
"-L", .path(.absolute(try toolchain.resourcesDirectory.get())),
"-L", .path(.absolute(try toolchain.sdkStdlib(sdk: toolchain.sdk.get()))),
"-rpath", "/usr/lib/swift", "-macosx_version_min", "10.14.0",
"-o", .path(.absolute(exec)),
],
inputs: [
.init(file: VirtualPath.temporary(RelativePath("main.o")).intern(), type: .object),
],
primaryInputs: [],
outputs: [.init(file: VirtualPath.relative(RelativePath("main")).intern(), type: .image)]
)
// Create a file with inpuit
let inputFile = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(inputFile) {
$0 <<< "print(\"Hello, World\")"
}
// We are going to override he executors standard input FileHandle to the above
// input file, to simulate it being piped over standard input to this compilation.
let testFile: FileHandle = FileHandle(forReadingAtPath: inputFile.description)!
let delegate = JobCollectingDelegate()
let resolver = try ArgsResolver(fileSystem: localFileSystem)
let executor = MultiJobExecutor(workload: .all([compile, link]),
resolver: resolver, executorDelegate: delegate,
diagnosticsEngine: DiagnosticsEngine(),
inputHandleOverride: testFile)
try executor.execute(env: toolchain.env, fileSystem: localFileSystem)
// Execute the resulting program
let output = try TSCBasic.Process.checkNonZeroExit(args: exec.pathString)
XCTAssertEqual(output, "Hello, World\n")
}
#endif
}
func testStubProcessProtocol() throws {
#if os(Windows)
throw XCTSkip("processId.getter returning `-1`")
#else
let job = Job(
moduleName: "main",
kind: .compile,
tool: ResolvedTool(path: AbsolutePath("/usr/bin/swift"), supportsResponseFiles: false),
commandLine: [.flag("something")],
inputs: [],
primaryInputs: [],
outputs: [.init(file: VirtualPath.temporary(RelativePath("main")).intern(), type: .object)]
)
let delegate = JobCollectingDelegate()
let executor = MultiJobExecutor(
workload: .all([job]), resolver: try ArgsResolver(fileSystem: localFileSystem),
executorDelegate: delegate,
diagnosticsEngine: DiagnosticsEngine(),
processType: JobCollectingDelegate.StubProcess.self
)
try executor.execute(env: ProcessEnv.vars, fileSystem: localFileSystem)
XCTAssertEqual(try delegate.finished[0].1.utf8Output(), "test")
#endif
}
func testSwiftDriverExecOverride() throws {
var env = ProcessEnv.vars
let envVarName = "SWIFT_DRIVER_SWIFT_FRONTEND_EXEC"
let dummyPath = "/some/garbage/path/fnord"
let executor = try SwiftDriverExecutor(diagnosticsEngine: DiagnosticsEngine(),
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: env)
// DarwinToolchain
env.removeValue(forKey: envVarName)
let normalSwiftPath = try DarwinToolchain(env: env, executor: executor).getToolPath(.swiftCompiler)
// Match Toolchain temporary shim of a fallback to looking for "swift" before failing.
XCTAssertTrue(normalSwiftPath.basenameWithoutExt == "swift-frontend" ||
normalSwiftPath.basenameWithoutExt == "swift")
env[envVarName] = dummyPath
let overriddenSwiftPath = try DarwinToolchain(env: env, executor: executor).getToolPath(.swiftCompiler)
XCTAssertEqual(overriddenSwiftPath, AbsolutePath(dummyPath))
// GenericUnixToolchain
env.removeValue(forKey: envVarName)
let unixSwiftPath = try GenericUnixToolchain(env: env, executor: executor).getToolPath(.swiftCompiler)
XCTAssertTrue(unixSwiftPath.basenameWithoutExt == "swift-frontend" ||
unixSwiftPath.basenameWithoutExt == "swift")
env[envVarName] = dummyPath
let unixOverriddenSwiftPath = try GenericUnixToolchain(env: env, executor: executor).getToolPath(.swiftCompiler)
XCTAssertEqual(unixOverriddenSwiftPath, AbsolutePath(dummyPath))
}
func testInputModifiedDuringSingleJobBuild() throws {
#if os(Windows)
throw XCTSkip("Requires -sdk")
#else
try withTemporaryDirectory { path in
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(main) {
$0 <<< "let foo = 1"
}
var driver = try Driver(args: ["swift", main.pathString])
let jobs = try driver.planBuild()
XCTAssertTrue(jobs.count == 1 && jobs[0].requiresInPlaceExecution)
// Change the file
try localFileSystem.writeFileContents(main) {
$0 <<< "let foo = 1"
}
XCTAssertThrowsError(try driver.run(jobs: jobs)) {
XCTAssertEqual($0 as? Job.InputError,
.inputUnexpectedlyModified(TypedVirtualPath(file: VirtualPath.absolute(main).intern(), type: .swift)))
}
}
#endif
}
func testShellEscapingArgsInJobDescription() throws {
let executor = try SwiftDriverExecutor(diagnosticsEngine: DiagnosticsEngine(),
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: [:])
let job = Job(moduleName: "Module",
kind: .compile,
tool: ResolvedTool(
path: AbsolutePath("/path/to/the tool"),
supportsResponseFiles: false),
commandLine: [.path(.absolute(.init("/with space"))),
.path(.absolute(.init("/withoutspace")))],
inputs: [], primaryInputs: [], outputs: [])
#if os(Windows)
XCTAssertEqual(try executor.description(of: job, forceResponseFiles: false),
#""\path\to\the tool" "\with space" \withoutspace"#)
#else
XCTAssertEqual(try executor.description(of: job, forceResponseFiles: false),
"'/path/to/the tool' '/with space' /withoutspace")
#endif
}
func testInputModifiedDuringMultiJobBuild() throws {
try withTemporaryDirectory { path in
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(main) {
$0 <<< "let foo = 1"
}
let other = path.appending(component: "other.swift")
try localFileSystem.writeFileContents(other) {
$0 <<< "let bar = 2"
}
// Sleep for 1s to allow for quiescing mtimes on filesystems with
// insufficient timestamp precision.
Thread.sleep(forTimeInterval: 1)
try assertDriverDiagnostics(args: ["swiftc", main.pathString, other.pathString]) {driver, verifier in
let jobs = try driver.planBuild()
XCTAssertTrue(jobs.count > 1)
// Change the file
try localFileSystem.writeFileContents(other) {
$0 <<< "let bar = 3"
}
verifier.expect(.error("input file '\(other.description)' was modified during the build"))
// There's a tool-specific linker error that usually happens here from
// whatever job runs last - probably the linker.
// It's no use testing for a particular error message, let's just make
// sure we emit the diagnostic we need.
verifier.permitUnexpected(.error)
XCTAssertThrowsError(try driver.run(jobs: jobs))
}
}
}
func testTemporaryFileWriting() throws {
try withTemporaryDirectory { path in
let resolver = try ArgsResolver(fileSystem: localFileSystem, temporaryDirectory: .absolute(path))
let tmpPath = VirtualPath.temporaryWithKnownContents(.init("one.txt"), "hello, world!".data(using: .utf8)!)
let resolvedOnce = try resolver.resolve(.path(tmpPath))
let readContents = try localFileSystem.readFileContents(.init(validating: resolvedOnce))
XCTAssertEqual(readContents, "hello, world!")
let resolvedTwice = try resolver.resolve(.path(tmpPath))
XCTAssertEqual(resolvedOnce, resolvedTwice)
let readContents2 = try localFileSystem.readFileContents(.init(validating: resolvedTwice))
XCTAssertEqual(readContents2, readContents)
}
}
func testResolveSquashedArgs() throws {
try withTemporaryDirectory { path in
let resolver = try ArgsResolver(fileSystem: localFileSystem, temporaryDirectory: .absolute(path))
let tmpPath = VirtualPath.temporaryWithKnownContents(.init("one.txt"), "hello, world!".data(using: .utf8)!)
let tmpPath2 = VirtualPath.temporaryWithKnownContents(.init("two.txt"), "goodbye!".data(using: .utf8)!)
let resolvedCommandLine = try resolver.resolve(
.squashedArgumentList(option: "--opt=", args: [.path(tmpPath), .path(tmpPath2)]))
XCTAssertEqual(resolvedCommandLine, "--opt=\(path.appending(component: "one.txt").pathString) \(path.appending(component: "two.txt").pathString)")
#if os(Windows)
XCTAssertEqual(resolvedCommandLine.spm_shellEscaped(),
#""--opt=\#(path.appending(component: "one.txt").pathString) \#(path.appending(component: "two.txt").pathString)""#)
#else
XCTAssertEqual(resolvedCommandLine.spm_shellEscaped(), "'--opt=\(path.appending(component: "one.txt").pathString) \(path.appending(component: "two.txt").pathString)'")
#endif
}
}
private func getHostToolchainSdkArg(_ executor: SwiftDriverExecutor) throws -> [String] {
#if os(macOS)
let toolchain = DarwinToolchain(env: ProcessEnv.vars, executor: executor)
return try ["-sdk", toolchain.sdk.get().pathString]
#elseif os(Windows)
let toolchain = WindowsToolchain(env: ProcessEnv.vars, executor: executor)
if let path = try toolchain.defaultSDKPath(nil) {
return ["-sdk", path.nativePathString(escaped: false)]
}
return []
#else
return []
#endif
}
func testSaveTemps() throws {
do {
try withTemporaryDirectory { path in
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(main) {
$0 <<< "print(\"hello, world!\")"
}
let diags = DiagnosticsEngine()
let executor = try SwiftDriverExecutor(diagnosticsEngine: diags,
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: ProcessEnv.vars)
let outputPath = path.appending(component: "finalOutput")
var driver = try Driver(args: ["swiftc", main.pathString,
"-driver-filelist-threshold", "0",
"-o", outputPath.pathString] + getHostToolchainSdkArg(executor),
env: ProcessEnv.vars,
diagnosticsEngine: diags,
fileSystem: localFileSystem,
executor: executor)
let jobs = try driver.planBuild()
XCTAssertEqual(jobs.removingAutolinkExtractJobs().map(\.kind), [.compile, .link])
XCTAssertEqual(jobs[0].outputs.count, 1)
let compileOutput = jobs[0].outputs[0].file
guard matchTemporary(compileOutput, "main.o") else {
XCTFail("unexpected output")
return
}
try driver.run(jobs: jobs)
XCTAssertTrue(localFileSystem.exists(outputPath))
// -save-temps wasn't passed, so ensure the temporary file was removed.
XCTAssertFalse(
localFileSystem.exists(.init(try executor.resolver.resolve(.path(driver.allSourcesFileList!))))
)
XCTAssertFalse(localFileSystem.exists(.init(try executor.resolver.resolve(.path(compileOutput)))))
}
}
do {
try withTemporaryDirectory { path in
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(main) {
$0 <<< "print(\"hello, world!\")"
}
let diags = DiagnosticsEngine()
let executor = try SwiftDriverExecutor(diagnosticsEngine: diags,
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: ProcessEnv.vars)
let outputPath = path.appending(component: "finalOutput")
var driver = try Driver(args: ["swiftc", main.pathString,
"-save-temps",
"-driver-filelist-threshold", "0",
"-o", outputPath.pathString] + getHostToolchainSdkArg(executor),
env: ProcessEnv.vars,
diagnosticsEngine: diags,
fileSystem: localFileSystem,
executor: executor)
let jobs = try driver.planBuild()
XCTAssertEqual(jobs.removingAutolinkExtractJobs().map(\.kind), [.compile, .link])
XCTAssertEqual(jobs[0].outputs.count, 1)
let compileOutput = jobs[0].outputs[0].file
guard matchTemporary(compileOutput, "main.o") else {
XCTFail("unexpected output")
return
}
try driver.run(jobs: jobs)
XCTAssertTrue(localFileSystem.exists(outputPath))
// -save-temps was passed, so ensure the temporary file was not removed.
XCTAssertTrue(
localFileSystem.exists(.init(try executor.resolver.resolve(.path(driver.allSourcesFileList!))))
)
XCTAssertTrue(localFileSystem.exists(.init(try executor.resolver.resolve(.path(compileOutput)))))
}
}
do {
try withTemporaryDirectory { path in
let main = path.appending(component: "main.swift")
try localFileSystem.writeFileContents(main) {
$0 <<< "print(\"hello, world!\")"
}
let diags = DiagnosticsEngine()
let executor = try SwiftDriverExecutor(diagnosticsEngine: diags,
processSet: ProcessSet(),
fileSystem: localFileSystem,
env: ProcessEnv.vars)
let outputPath = path.appending(component: "finalOutput")
var driver = try Driver(args: ["swiftc", main.pathString,
"-driver-filelist-threshold", "0",
"-Xfrontend", "-debug-crash-immediately",
"-o", outputPath.pathString] + getHostToolchainSdkArg(executor),
env: ProcessEnv.vars,
diagnosticsEngine: diags,
fileSystem: localFileSystem,
executor: executor)
let jobs = try driver.planBuild()
XCTAssertEqual(jobs.removingAutolinkExtractJobs().map(\.kind), [.compile, .link])
XCTAssertEqual(jobs[0].outputs.count, 1)
let compileOutput = jobs[0].outputs[0].file
guard matchTemporary(compileOutput, "main.o") else {
XCTFail("unexpected output")
return
}
try? driver.run(jobs: jobs)
// A job crashed, so ensure any temporary files written so far are preserved.
XCTAssertTrue(
localFileSystem.exists(.init(try executor.resolver.resolve(.path(driver.allSourcesFileList!))))
)
}
}
}
}