Updated the Capturing procotol in the Recording package target to pass captured audio as a file URL instead of data.

Packages/Features/Tests/Recording/Mocks/CapturingMock.swift

@@ -0,0 +1,48 @@
+import Foundation
+import Recording
+
+/// A recording service that records its invocations in call order, each one taking a configurable amount of time, and can be
+/// configured to fail.
+@MainActor
+final class CapturingMock: Capturing {
+
+    /// The duration every method takes before returning, simulating slow capture work.
+    var delay: Duration = .zero
+
+    /// The error the service throws from every method, or `nil` when it should succeed.
+    var error: Error?
+
+    /// The names of the methods called on the service, in call order.
+    private(set) var calls: [String] = []
+
+    func start() async throws {
+        try await called("start")
+    }
+
+    func pause() async throws {
+        try await called("pause")
+    }
+
+    func resume() async throws {
+        try await called("resume")
+    }
+
+    func stop() async throws -> URL {
+        try await called("stop")
+
+        return FileManager.default.temporaryDirectory.appending(path: "mock.m4a")
+    }
+
+    private func called(
+        _ name: String
+    ) async throws {
+        calls.append(name)
+
+        try await Task.sleep(for: delay)
+
+        if let error {
+            throw error
+        }
+    }
+
+}

Packages/Features/Tests/Recording/Mocks/ErrorMock.swift

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+/// An error to configure the service mocks with.
+struct ErrorMock: Error {}

Packages/Features/Tests/Recording/Mocks/TranscribingMock.swift

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+import Foundation
+import Recording
+
+/// A transcribing service with a configurable delay, output, and failure.
+@MainActor
+final class TranscribingMock: Transcribing {
+
+    /// The duration of the simulated transcription work.
+    var delay: Duration = .seconds(0.2)
+
+    /// The error the service throws, or `nil` when it should succeed.
+    var error: Error?
+
+    /// The transcription the service returns.
+    var transcription = "This is a mocked transcription."
+
+    func callAsFunction(
+        _ audio: URL,
+        locale: Locale
+    ) async throws -> Transcription {
+        try await Task.sleep(for: delay)
+
+        if let error {
+            throw error
+        }
+
+        return .init(text: transcription)
+    }
+
+}