fix(ios): make swift tests self-contained

Author: adamTrz

packages/react-native-brownfield/ios/Package.swift

@@ -42,9 +42,7 @@ let package = Package(
       name: "BrownfieldBundleSupportTests",
       dependencies: ["BrownfieldBundleSupport"],
       path: "Tests",
-      resources: [
-        .copy("Fixtures/main.jsbundle"),
-      ]
+      exclude: ["Fixtures"]
     ),
   ]
 )

packages/react-native-brownfield/ios/Tests/BrownfieldBundleURLResolverTests.swift

@@ -4,12 +4,13 @@ import XCTest
 final class BrownfieldBundleURLResolverTests: XCTestCase {
   func test_debugResolutionPrefersBundledResourceWhenEnabled() throws {
     let metroURL = URL(string: "http://localhost:8081/index.bundle?platform=ios")!
+    let bundle = try makeFixtureBundle()
 
     let resolvedURL = try BrownfieldBundleURLResolver.resolve(
       isDebug: true,
       preferBundledBundleInDebug: true,
       bundlePath: "main.jsbundle",
-      bundle: .module,
+      bundle: bundle,
       bundleURLOverride: nil,
       metroURL: { metroURL }
     )
@@ -21,12 +22,13 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
 
   func test_debugResolutionUsesMetroByDefault() throws {
     let metroURL = URL(string: "http://localhost:8081/index.bundle?platform=ios")!
+    let bundle = try makeFixtureBundle()
 
     let resolvedURL = try BrownfieldBundleURLResolver.resolve(
       isDebug: true,
       preferBundledBundleInDebug: false,
       bundlePath: "main.jsbundle",
-      bundle: .module,
+      bundle: bundle,
       bundleURLOverride: nil,
       metroURL: { metroURL }
     )
@@ -36,12 +38,13 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
 
   func test_releaseResolutionUsesBundledResource() throws {
     let metroURL = URL(string: "http://localhost:8081/index.bundle?platform=ios")!
+    let bundle = try makeFixtureBundle()
 
     let resolvedURL = try BrownfieldBundleURLResolver.resolve(
       isDebug: false,
       preferBundledBundleInDebug: false,
       bundlePath: "main.jsbundle",
-      bundle: .module,
+      bundle: bundle,
       bundleURLOverride: nil,
       metroURL: { metroURL }
     )
@@ -54,12 +57,13 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
   func test_bundleURLOverrideTakesPrecedenceWhenItReturnsAURL() throws {
     let metroURL = URL(string: "http://localhost:8081/index.bundle?platform=ios")!
     let overrideURL = URL(string: "https://example.com/custom.bundle")!
+    let bundle = try makeFixtureBundle()
 
     let resolvedURL = try BrownfieldBundleURLResolver.resolve(
       isDebug: true,
       preferBundledBundleInDebug: false,
       bundlePath: "main.jsbundle",
-      bundle: .module,
+      bundle: bundle,
       bundleURLOverride: { overrideURL },
       metroURL: { metroURL }
     )
@@ -69,12 +73,13 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
 
   func test_bundleURLOverrideFallsBackWhenItReturnsNil() throws {
     let metroURL = URL(string: "http://localhost:8081/index.bundle?platform=ios")!
+    let bundle = try makeFixtureBundle()
 
     let resolvedURL = try BrownfieldBundleURLResolver.resolve(
       isDebug: true,
       preferBundledBundleInDebug: true,
       bundlePath: "main.jsbundle",
-      bundle: .module,
+      bundle: bundle,
       bundleURLOverride: { nil },
       metroURL: { metroURL }
     )
@@ -90,7 +95,7 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
         isDebug: false,
         preferBundledBundleInDebug: false,
         bundlePath: "mainjsbundle",
-        bundle: .module,
+        bundle: Bundle(for: Self.self),
         bundleURLOverride: nil,
         metroURL: { nil }
       )
@@ -102,4 +107,50 @@ final class BrownfieldBundleURLResolverTests: XCTestCase {
       XCTAssertEqual(bundlePath, "mainjsbundle")
     }
   }
+
+  private func makeFixtureBundle() throws -> Bundle {
+    let fileManager = FileManager.default
+    let bundleURL = fileManager.temporaryDirectory
+      .appendingPathComponent("BrownfieldBundleFixture-\(UUID().uuidString).bundle")
+    let contentsURL = bundleURL.appendingPathComponent("Contents")
+    let resourcesURL = contentsURL.appendingPathComponent("Resources")
+    let plistURL = contentsURL.appendingPathComponent("Info.plist")
+    let fixtureURL = resourcesURL.appendingPathComponent("main.jsbundle")
+
+    try fileManager.createDirectory(at: resourcesURL, withIntermediateDirectories: true)
+
+    let plist = """
+    <?xml version="1.0" encoding="UTF-8"?>
+    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+    <plist version="1.0">
+    <dict>
+      <key>CFBundleIdentifier</key>
+      <string>com.callstack.BrownfieldBundleFixture</string>
+      <key>CFBundleName</key>
+      <string>BrownfieldBundleFixture</string>
+      <key>CFBundlePackageType</key>
+      <string>BNDL</string>
+      <key>CFBundleVersion</key>
+      <string>1</string>
+    </dict>
+    </plist>
+    """
+
+    try plist.write(to: plistURL, atomically: true, encoding: .utf8)
+    try "console.log(\"fixture\");".write(to: fixtureURL, atomically: true, encoding: .utf8)
+
+    addTeardownBlock {
+      try? fileManager.removeItem(at: bundleURL)
+    }
+
+    guard let bundle = Bundle(url: bundleURL) else {
+      throw NSError(
+        domain: "BrownfieldBundleURLResolverTests",
+        code: 1,
+        userInfo: [NSLocalizedDescriptionKey: "Failed to create fixture bundle"]
+      )
+    }
+
+    return bundle
+  }
 }