Add Transcriptions Tests

Tests/SwiftOpenAITests/OpenAITests/Unit Tests/Audio/CreateTranscription/CreateTranscriptionEndpointSpec.swift

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+import XCTest
+@testable import SwiftOpenAI
+
+final class CreateTranscriptionEndpointSpec: XCTestCase {
+    func testEndpointCreateSpeech_WithModelTTS() throws {
+        let model: OpenAITranscriptionModelType = .whisper
+        let language = "en"
+        let responseFormat: OpenAIAudioResponseType = .mp3
+        let temperature = 1.0
+
+        let sut = OpenAIEndpoints.createTranscription(
+            file: Data(),
+            model: model,
+            language: language,
+            prompt: "",
+            responseFormat: responseFormat,
+            temperature: temperature
+        ).endpoint
+
+        let modelParameter = sut.parameters!["model"] as! String
+        let languageParameter = sut.parameters!["language"] as! String
+        let responseFormatParameter = sut.parameters!["response_format"] as! String
+        let temperatureFormatParameter = sut.parameters!["temperature"] as! Double
+
+        XCTAssertEqual(sut.path, "audio/transcriptions")
+        XCTAssertEqual(sut.method, .POST)
+        XCTAssertEqual(sut.parameters?.count, 5)
+        XCTAssertEqual(modelParameter, model.rawValue)
+        XCTAssertEqual(languageParameter, language)
+        XCTAssertEqual(responseFormatParameter, responseFormat.rawValue)
+        XCTAssertEqual(temperatureFormatParameter, temperature)
+    }
+}
+

Tests/SwiftOpenAITests/OpenAITests/Unit Tests/Audio/CreateTranscription/CreateTranscriptionRequestSpec.swift

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+import XCTest
+@testable import SwiftOpenAI
+
+final class CreateTranscriptionRequestSpec: XCTestCase {
+    private let api = API()
+
+    func testRequest_CreatedWithCorrectHeaders() throws {
+        let apiKey = "1234567890"
+        let model: OpenAITranscriptionModelType = .whisper
+        let language = "en"
+        let responseFormat: OpenAIAudioResponseType = .mp3
+        let temperature = 1.0
+
+        var endpoint = OpenAIEndpoints.createTranscription(
+            file: Data(),
+            model: model,
+            language: language,
+            prompt: "",
+            responseFormat: responseFormat,
+            temperature: temperature
+        ).endpoint
+
+        api.routeEndpoint(&endpoint, environment: OpenAIEnvironmentV1())
+
+        var sut = api.buildURLRequest(endpoint: endpoint)
+        api.addHeaders(urlRequest: &sut,
+                       headers: ["Content-Type" : "application/json",
+                                 "Authorization" : "Bearer \(apiKey)"])
+
+        XCTAssertEqual(sut.allHTTPHeaderFields?.count, 2)
+        XCTAssertEqual(sut.allHTTPHeaderFields?["Content-Type"], "application/json")
+        XCTAssertEqual(sut.allHTTPHeaderFields?["Authorization"], "Bearer 1234567890")
+    }
+}