Change unit test fixture to not fetch packages (such as swift-argument-parser) while running.

Author: abertelrud

Fixtures/Miscellaneous/Extensions/MySourceGenExtension/Package.swift

@@ -10,16 +10,12 @@ let package = Package(
         //     target: "MySourceGenExt"
         // )
     ],
-    dependencies: [
-        .package(url: "https://github.com/apple/swift-argument-parser.git", .upToNextMinor(from: "0.3.1")),
-    ],
     targets: [
         // A local tool that uses an extension.
         .executableTarget(
             name: "MyLocalTool",
             dependencies: [
                 "MySourceGenExt",
-                .product(name: "ArgumentParser", package: "swift-argument-parser"),
                 "MySourceGenTool"
             ]
         ),
@@ -36,7 +32,6 @@ let package = Package(
             name: "MySourceGenTool",
             dependencies: [
                 "MySourceGenToolLib",
-                .product(name: "ArgumentParser", package: "swift-argument-parser")
             ]
         ),
         // A library used by MySourceGenTool (not the client).

Fixtures/Miscellaneous/Extensions/MySourceGenExtension/Sources/MySourceGenExt/extension.swift

@@ -1,21 +1,17 @@
 import PackageExtension
 
-
 for inputPath in targetBuildContext.otherFiles {
-    guard inputPath.hasSuffix(".dat") else { continue }
-    
-    let outputPath = targetBuildContext.outputDir.appending(inputPath.basename + ".swift")
-    print("inputPath:  \(inputPath)")
-    print("outputPath: \(outputPath)")
-
+    guard inputPath.suffix == ".dat" else { continue }
+    let outputName = inputPath.basename + ".swift"
+    let outputPath = targetBuildContext.outputDir.appending(outputName)
     commandConstructor.createCommand(
         displayName:
-            "MySourceGenTooling \(outputPath.string)",
+            "MySourceGenTooling \(inputPath)",
         executable:
             try targetBuildContext.lookupTool(named: "MySourceGenTool"),
         arguments: [
-            inputPath.string,
-            outputPath.string
+            "\(inputPath)",
+            "\(outputPath)"
         ],
         inputPaths: [
             inputPath,

Fixtures/Miscellaneous/Extensions/MySourceGenExtension/Sources/MySourceGenTool/main.swift

@@ -1,19 +1,16 @@
-import ArgumentParser
 import Foundation
 import MySourceGenToolLib
 
-// Sample source generator tool that just emits the hex representation of the contents of a file as a quoted string.
-struct MySourceGenTool: ParsableCommand {
-    @Argument() var inputFile: String
-    @Argument() var outputFile: String
-    
-    func run() {
-        let inputData = FileManager.default.contents(atPath: inputFile) ?? Data()
-        let dataAsHex = inputData.map { String(format: "%02hhx", $0) }.joined()
-        let outputString = "public var data = \(dataAsHex.quotedForSourceCode)\n"
-        let outputData = outputString.data(using: .utf8)
-        FileManager.default.createFile(atPath: outputFile, contents: outputData)
-    }
+// Sample source generator tool that just emits the hex representation of the contents of a file as a quoted string.  The input file is the first argument and the output file is the second.
+if ProcessInfo.processInfo.arguments.count != 3 {
+    print("usage: MySourceGenTool <input> <output>")
+    exit(1)
 }
+let inputFile = ProcessInfo.processInfo.arguments[1]
+let outputFile = ProcessInfo.processInfo.arguments[2]
 
-MySourceGenTool.main()
+let inputData = FileManager.default.contents(atPath: inputFile) ?? Data()
+let dataAsHex = inputData.map { String(format: "%02hhx", $0) }.joined()
+let outputString = "public var data = \(dataAsHex.quotedForSourceCode)\n"
+let outputData = outputString.data(using: .utf8)
+FileManager.default.createFile(atPath: outputFile, contents: outputData)

Tests/FunctionalTests/ExtensionTests.swift

@@ -19,10 +19,10 @@ class ExtensionTests: XCTestCase {
         fixture(name: "Miscellaneous/Extensions/MySourceGenExtension") { prefix in
             do {
                 let (stdout, _) = try executeSwiftBuild(prefix, configuration: .Debug, env: ["SWIFTPM_ENABLE_EXTENSION_TARGETS": "1"])
-                XCTAssert(stdout.contains("Linking MySourceGenTool"))
-                XCTAssert(stdout.contains("MySourceGenTooling Foo.dat.swift"))
-                XCTAssert(stdout.contains("Linking MyLocalTool"))
-                XCTAssert(stdout.contains("Build Completed"))
+                XCTAssert(stdout.contains("Linking MySourceGenTool"), "stdout:\n\(stdout)")
+                XCTAssert(stdout.contains("MySourceGenTooling Foo.dat"), "stdout:\n\(stdout)")
+                XCTAssert(stdout.contains("Linking MyLocalTool"), "stdout:\n\(stdout)")
+                XCTAssert(stdout.contains("Build Completed"), "stdout:\n\(stdout)")
             }
             catch {
                 print(error)