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//===------------- PhasedTest.swift - Swift Testing ---------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2021 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
@_spi(Testing) import SwiftDriver
import SwiftOptions
import TestUtilities
/// Performs a test of the incremental logic and incremental import logic in the driver.
/// Runs the test with incremental imports enabled and then disabled.
/// Eacn test is a series of `Step`s.
public struct IncrementalTest {
/// The `Step`s to run, in order.
let steps: [Step]
let context: Context
/// Runs the test.
/// - Parameters:
/// - steps: The `Step` to run.
/// - verbose: Pass `true` to debug a test. Otherwise, omit.
/// - file: Determines where any test failure messages will appear in Xcode
/// - line: Ditto
public static func perform(
_ steps: [Step],
verbose: Bool = false,
file: StaticString = #file,
line: UInt = #line
) throws {
try [.enabled, .disabled].forEach {
try perform(steps: steps,
incrementalImports: $0,
verbose: verbose,
file: file,
line: line)
}
}
private static func perform(steps: [Step],
incrementalImports: Context.IncrementalImports,
verbose: Bool,
file: StaticString,
line: UInt
) throws {
try withTemporaryDirectory { rootDir in
try localFileSystem.changeCurrentWorkingDirectory(to: rootDir)
for file in try localFileSystem.getDirectoryContents(rootDir) {
try localFileSystem.removeFileTree(rootDir.appending(component: file))
}
try Self(steps: steps,
context: Context(rootDir: rootDir,
incrementalImports: incrementalImports,
verbose: verbose,
stepIndex: 0,
file: file,
line: line))
.performSteps()
}
}
private init(steps: [Step], context: Context) {
self.steps = steps
self.context = context
}
private func performSteps() throws {
for (index, step) in steps.enumerated() {
if context.verbose {
print("\(index)", terminator: " ")
}
try step.perform(stepIndex: index, in: context)
}
if context.verbose {
print("")
}
}
}
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