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GenerativeModelTests.swift
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// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import FirebaseAppCheckInterop
import FirebaseAuthInterop
import FirebaseCore
import XCTest
@testable import FirebaseVertexAI
@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
final class GenerativeModelTests: XCTestCase {
let testPrompt = "What sorts of questions can I ask you?"
let safetyRatingsNegligible: [SafetyRating] = [
.init(
category: .sexuallyExplicit,
probability: .negligible,
probabilityScore: 0.1431877,
severity: .negligible,
severityScore: 0.11027937,
blocked: false
),
.init(
category: .hateSpeech,
probability: .negligible,
probabilityScore: 0.029035643,
severity: .negligible,
severityScore: 0.05613278,
blocked: false
),
.init(
category: .harassment,
probability: .negligible,
probabilityScore: 0.087252244,
severity: .negligible,
severityScore: 0.04509957,
blocked: false
),
.init(
category: .dangerousContent,
probability: .negligible,
probabilityScore: 0.2641685,
severity: .negligible,
severityScore: 0.082253955,
blocked: false
),
].sorted()
let testModelName = "test-model"
let testModelResourceName =
"projects/test-project-id/locations/test-location/publishers/google/models/test-model"
let apiConfig = VertexAI.defaultVertexAIAPIConfig
let vertexSubdirectory = "vertexai"
var urlSession: URLSession!
var model: GenerativeModel!
override func setUp() async throws {
let configuration = URLSessionConfiguration.default
configuration.protocolClasses = [MockURLProtocol.self]
urlSession = try XCTUnwrap(URLSession(configuration: configuration))
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
}
override func tearDown() {
MockURLProtocol.requestHandler = nil
}
// MARK: - Generate Content
func testGenerateContent_success_basicReplyLong() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-long",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
let finishReason = try XCTUnwrap(candidate.finishReason)
XCTAssertEqual(finishReason, .stop)
XCTAssertEqual(candidate.safetyRatings.count, 4)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
let partText = try XCTUnwrap(part as? TextPart).text
XCTAssertTrue(partText.hasPrefix("1. **Use Freshly Ground Coffee**:"))
XCTAssertEqual(response.text, partText)
XCTAssertEqual(response.functionCalls, [])
}
func testGenerateContent_success_basicReplyShort() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
let finishReason = try XCTUnwrap(candidate.finishReason)
XCTAssertEqual(finishReason, .stop)
XCTAssertEqual(candidate.safetyRatings.sorted(), safetyRatingsNegligible)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
let textPart = try XCTUnwrap(part as? TextPart)
XCTAssertEqual(textPart.text, "Mountain View, California")
XCTAssertEqual(response.text, textPart.text)
XCTAssertEqual(response.functionCalls, [])
}
func testGenerateContent_success_basicReplyFullUsageMetadata() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-response-long-usage-metadata",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
let finishReason = try XCTUnwrap(candidate.finishReason)
XCTAssertEqual(finishReason, .stop)
let usageMetadata = try XCTUnwrap(response.usageMetadata)
XCTAssertEqual(usageMetadata.promptTokensDetails.count, 2)
XCTAssertEqual(usageMetadata.promptTokensDetails[0].modality, .image)
XCTAssertEqual(usageMetadata.promptTokensDetails[0].tokenCount, 1806)
XCTAssertEqual(usageMetadata.promptTokensDetails[1].modality, .text)
XCTAssertEqual(usageMetadata.promptTokensDetails[1].tokenCount, 76)
XCTAssertEqual(usageMetadata.candidatesTokensDetails.count, 1)
XCTAssertEqual(usageMetadata.candidatesTokensDetails[0].modality, .text)
XCTAssertEqual(usageMetadata.candidatesTokensDetails[0].tokenCount, 76)
}
func testGenerateContent_success_citations() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-citations",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let expectedPublicationDate = DateComponents(
calendar: Calendar(identifier: .gregorian),
year: 2019,
month: 5,
day: 10
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 1)
XCTAssertEqual(response.text, "Some information cited from an external source")
let citationMetadata = try XCTUnwrap(candidate.citationMetadata)
XCTAssertEqual(citationMetadata.citations.count, 3)
let citationSource1 = try XCTUnwrap(citationMetadata.citations[0])
XCTAssertEqual(citationSource1.uri, "https://www.example.com/some-citation-1")
XCTAssertEqual(citationSource1.startIndex, 0)
XCTAssertEqual(citationSource1.endIndex, 128)
XCTAssertNil(citationSource1.title)
XCTAssertNil(citationSource1.license)
XCTAssertNil(citationSource1.publicationDate)
let citationSource2 = try XCTUnwrap(citationMetadata.citations[1])
XCTAssertEqual(citationSource2.title, "some-citation-2")
XCTAssertEqual(citationSource2.publicationDate, expectedPublicationDate)
XCTAssertEqual(citationSource2.startIndex, 130)
XCTAssertEqual(citationSource2.endIndex, 265)
XCTAssertNil(citationSource2.uri)
XCTAssertNil(citationSource2.license)
let citationSource3 = try XCTUnwrap(citationMetadata.citations[2])
XCTAssertEqual(citationSource3.uri, "https://www.example.com/some-citation-3")
XCTAssertEqual(citationSource3.startIndex, 272)
XCTAssertEqual(citationSource3.endIndex, 431)
XCTAssertEqual(citationSource3.license, "mit")
XCTAssertNil(citationSource3.title)
XCTAssertNil(citationSource3.publicationDate)
}
func testGenerateContent_success_quoteReply() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-quote-reply",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
let finishReason = try XCTUnwrap(candidate.finishReason)
XCTAssertEqual(finishReason, .stop)
XCTAssertEqual(candidate.safetyRatings.count, 4)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
let textPart = try XCTUnwrap(part as? TextPart)
XCTAssertTrue(textPart.text.hasPrefix("Google"))
XCTAssertEqual(response.text, textPart.text)
let promptFeedback = try XCTUnwrap(response.promptFeedback)
XCTAssertNil(promptFeedback.blockReason)
XCTAssertEqual(promptFeedback.safetyRatings.count, 4)
}
func testGenerateContent_success_unknownEnum_safetyRatings() async throws {
let expectedSafetyRatings = [
SafetyRating(
category: .harassment,
probability: .medium,
probabilityScore: 0.0,
severity: .init(rawValue: "HARM_SEVERITY_UNSPECIFIED"),
severityScore: 0.0,
blocked: false
),
SafetyRating(
category: .dangerousContent,
probability: SafetyRating.HarmProbability(rawValue: "FAKE_NEW_HARM_PROBABILITY"),
probabilityScore: 0.0,
severity: .init(rawValue: "HARM_SEVERITY_UNSPECIFIED"),
severityScore: 0.0,
blocked: false
),
SafetyRating(
category: HarmCategory(rawValue: "FAKE_NEW_HARM_CATEGORY"),
probability: .high,
probabilityScore: 0.0,
severity: .init(rawValue: "HARM_SEVERITY_UNSPECIFIED"),
severityScore: 0.0,
blocked: false
),
]
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-unknown-enum-safety-ratings",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.text, "Some text")
XCTAssertEqual(response.candidates.first?.safetyRatings, expectedSafetyRatings)
XCTAssertEqual(response.promptFeedback?.safetyRatings, expectedSafetyRatings)
}
func testGenerateContent_success_prefixedModelName() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_success_functionCall_emptyArguments() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-function-call-empty-arguments",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
guard let functionCall = part as? FunctionCallPart else {
XCTFail("Part is not a FunctionCall.")
return
}
XCTAssertEqual(functionCall.name, "current_time")
XCTAssertTrue(functionCall.args.isEmpty)
XCTAssertEqual(response.functionCalls, [functionCall])
}
func testGenerateContent_success_functionCall_noArguments() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-function-call-no-arguments",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
guard let functionCall = part as? FunctionCallPart else {
XCTFail("Part is not a FunctionCall.")
return
}
XCTAssertEqual(functionCall.name, "current_time")
XCTAssertTrue(functionCall.args.isEmpty)
XCTAssertEqual(response.functionCalls, [functionCall])
}
func testGenerateContent_success_functionCall_withArguments() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-function-call-with-arguments",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 1)
let part = try XCTUnwrap(candidate.content.parts.first)
guard let functionCall = part as? FunctionCallPart else {
XCTFail("Part is not a FunctionCall.")
return
}
XCTAssertEqual(functionCall.name, "sum")
XCTAssertEqual(functionCall.args.count, 2)
let argX = try XCTUnwrap(functionCall.args["x"])
XCTAssertEqual(argX, .number(4))
let argY = try XCTUnwrap(functionCall.args["y"])
XCTAssertEqual(argY, .number(5))
XCTAssertEqual(response.functionCalls, [functionCall])
}
func testGenerateContent_success_functionCall_parallelCalls() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-function-call-parallel-calls",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 3)
let functionCalls = response.functionCalls
XCTAssertEqual(functionCalls.count, 3)
}
func testGenerateContent_success_functionCall_mixedContent() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-function-call-mixed-content",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
let candidate = try XCTUnwrap(response.candidates.first)
XCTAssertEqual(candidate.content.parts.count, 4)
let functionCalls = response.functionCalls
XCTAssertEqual(functionCalls.count, 2)
let text = try XCTUnwrap(response.text)
XCTAssertEqual(text, "The sum of [1, 2, 3] is")
}
func testGenerateContent_appCheck_validToken() async throws {
let appCheckToken = "test-valid-token"
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(appCheck: AppCheckInteropFake(token: appCheckToken)),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
appCheckToken: appCheckToken
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_dataCollectionOff() async throws {
let appCheckToken = "test-valid-token"
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(appCheck: AppCheckInteropFake(token: appCheckToken),
privateAppID: true),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
appCheckToken: appCheckToken,
dataCollection: false
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_appCheck_tokenRefreshError() async throws {
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(appCheck: AppCheckInteropFake(error: AppCheckErrorFake())),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
appCheckToken: AppCheckInteropFake.placeholderTokenValue
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_auth_validAuthToken() async throws {
let authToken = "test-valid-token"
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(auth: AuthInteropFake(token: authToken)),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
authToken: authToken
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_auth_nilAuthToken() async throws {
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(auth: AuthInteropFake(token: nil)),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
authToken: nil
)
_ = try await model.generateContent(testPrompt)
}
func testGenerateContent_auth_authTokenRefreshError() async throws {
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(auth: AuthInteropFake(error: AuthErrorFake())),
apiConfig: apiConfig,
tools: nil,
requestOptions: RequestOptions(),
urlSession: urlSession
)
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
authToken: nil
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw internalError(AuthErrorFake); no error.")
} catch GenerateContentError.internalError(_ as AuthErrorFake) {
//
} catch {
XCTFail("Should throw internalError(AuthErrorFake); error thrown: \(error)")
}
}
func testGenerateContent_usageMetadata() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let response = try await model.generateContent(testPrompt)
let usageMetadata = try XCTUnwrap(response.usageMetadata)
XCTAssertEqual(usageMetadata.promptTokenCount, 6)
XCTAssertEqual(usageMetadata.candidatesTokenCount, 7)
XCTAssertEqual(usageMetadata.totalTokenCount, 13)
XCTAssertEqual(usageMetadata.promptTokensDetails.isEmpty, true)
XCTAssertEqual(usageMetadata.candidatesTokensDetails.isEmpty, true)
}
func testGenerateContent_failure_invalidAPIKey() async throws {
let expectedStatusCode = 400
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-api-key",
withExtension: "json",
subdirectory: vertexSubdirectory,
statusCode: expectedStatusCode
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw GenerateContentError.internalError; no error thrown.")
} catch let GenerateContentError.internalError(error as BackendError) {
XCTAssertEqual(error.httpResponseCode, 400)
XCTAssertEqual(error.status, .invalidArgument)
XCTAssertEqual(error.message, "API key not valid. Please pass a valid API key.")
XCTAssertTrue(error.localizedDescription.contains(error.message))
XCTAssertTrue(error.localizedDescription.contains(error.status.rawValue))
XCTAssertTrue(error.localizedDescription.contains("\(error.httpResponseCode)"))
let nsError = error as NSError
XCTAssertEqual(nsError.domain, "\(Constants.baseErrorDomain).\(BackendError.self)")
XCTAssertEqual(nsError.code, error.httpResponseCode)
return
} catch {
XCTFail("Should throw GenerateContentError.internalError(RPCError); error thrown: \(error)")
}
}
func testGenerateContent_failure_firebaseVertexAIAPINotEnabled() async throws {
let expectedStatusCode = 403
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-firebasevertexai-api-not-enabled",
withExtension: "json",
subdirectory: vertexSubdirectory,
statusCode: expectedStatusCode
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw GenerateContentError.internalError; no error thrown.")
} catch let GenerateContentError.internalError(error as BackendError) {
XCTAssertEqual(error.httpResponseCode, expectedStatusCode)
XCTAssertEqual(error.status, .permissionDenied)
XCTAssertTrue(error.message
.starts(with: "Vertex AI in Firebase API has not been used in project"))
XCTAssertTrue(error.isVertexAIInFirebaseServiceDisabledError())
return
} catch {
XCTFail("Should throw GenerateContentError.internalError(RPCError); error thrown: \(error)")
}
}
func testGenerateContent_failure_emptyContent() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-empty-content",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw GenerateContentError.internalError; no error thrown.")
} catch let GenerateContentError
.internalError(underlying: invalidCandidateError as InvalidCandidateError) {
guard case let .emptyContent(decodingError) = invalidCandidateError else {
XCTFail("Not an InvalidCandidateError.emptyContent error: \(invalidCandidateError)")
return
}
_ = try XCTUnwrap(decodingError as? DecodingError,
"Not a DecodingError: \(decodingError)")
} catch {
XCTFail("Should throw GenerateContentError.internalError; error thrown: \(error)")
}
}
func testGenerateContent_failure_finishReasonSafety() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-finish-reason-safety",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.responseStoppedEarly(reason, response) {
XCTAssertEqual(reason, .safety)
XCTAssertEqual(response.text, "<redacted>")
} catch {
XCTFail("Should throw a responseStoppedEarly")
}
}
func testGenerateContent_failure_finishReasonSafety_noContent() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-finish-reason-safety-no-content",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.responseStoppedEarly(reason, response) {
XCTAssertEqual(reason, .safety)
XCTAssertNil(response.text)
} catch {
XCTFail("Should throw a responseStoppedEarly")
}
}
func testGenerateContent_failure_imageRejected() async throws {
let expectedStatusCode = 400
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-image-rejected",
withExtension: "json",
subdirectory: vertexSubdirectory,
statusCode: 400
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw GenerateContentError.internalError; no error thrown.")
} catch let GenerateContentError.internalError(underlying: rpcError as BackendError) {
XCTAssertEqual(rpcError.status, .invalidArgument)
XCTAssertEqual(rpcError.httpResponseCode, expectedStatusCode)
XCTAssertEqual(rpcError.message, "Request contains an invalid argument.")
} catch {
XCTFail("Should throw GenerateContentError.internalError; error thrown: \(error)")
}
}
func testGenerateContent_failure_promptBlockedSafety() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-prompt-blocked-safety",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.promptBlocked(response) {
XCTAssertNil(response.text)
let promptFeedback = try XCTUnwrap(response.promptFeedback)
XCTAssertEqual(promptFeedback.blockReason, PromptFeedback.BlockReason.safety)
XCTAssertNil(promptFeedback.blockReasonMessage)
} catch {
XCTFail("Should throw a promptBlocked")
}
}
func testGenerateContent_failure_promptBlockedSafetyWithMessage() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-prompt-blocked-safety-with-message",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.promptBlocked(response) {
XCTAssertNil(response.text)
let promptFeedback = try XCTUnwrap(response.promptFeedback)
XCTAssertEqual(promptFeedback.blockReason, PromptFeedback.BlockReason.safety)
XCTAssertEqual(promptFeedback.blockReasonMessage, "Reasons")
} catch {
XCTFail("Should throw a promptBlocked")
}
}
func testGenerateContent_failure_unknownEnum_finishReason() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-unknown-enum-finish-reason",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let unknownFinishReason = FinishReason(rawValue: "FAKE_NEW_FINISH_REASON")
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.responseStoppedEarly(reason, response) {
XCTAssertEqual(reason, unknownFinishReason)
XCTAssertEqual(response.text, "Some text")
} catch {
XCTFail("Should throw a responseStoppedEarly")
}
}
func testGenerateContent_failure_unknownEnum_promptBlocked() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-unknown-enum-prompt-blocked",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let unknownBlockReason = PromptFeedback.BlockReason(rawValue: "FAKE_NEW_BLOCK_REASON")
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw")
} catch let GenerateContentError.promptBlocked(response) {
let promptFeedback = try XCTUnwrap(response.promptFeedback)
XCTAssertEqual(promptFeedback.blockReason, unknownBlockReason)
} catch {
XCTFail("Should throw a promptBlocked")
}
}
func testGenerateContent_failure_unknownModel() async throws {
let expectedStatusCode = 404
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-unknown-model",
withExtension: "json",
subdirectory: vertexSubdirectory,
statusCode: 404
)
do {
_ = try await model.generateContent(testPrompt)
XCTFail("Should throw GenerateContentError.internalError; no error thrown.")
} catch let GenerateContentError.internalError(underlying: rpcError as BackendError) {
XCTAssertEqual(rpcError.status, .notFound)
XCTAssertEqual(rpcError.httpResponseCode, expectedStatusCode)
XCTAssertTrue(rpcError.message.hasPrefix("models/unknown is not found"))
} catch {
XCTFail("Should throw GenerateContentError.internalError; error thrown: \(error)")
}
}
func testGenerateContent_failure_nonHTTPResponse() async throws {
MockURLProtocol.requestHandler = try nonHTTPRequestHandler()
var responseError: Error?
var content: GenerateContentResponse?
do {
content = try await model.generateContent(testPrompt)
} catch {
responseError = error
}
XCTAssertNil(content)
XCTAssertNotNil(responseError)
let generateContentError = try XCTUnwrap(responseError as? GenerateContentError)
guard case let .internalError(underlyingError) = generateContentError else {
XCTFail("Not an internal error: \(generateContentError)")
return
}
XCTAssertEqual(underlyingError.localizedDescription, "Response was not an HTTP response.")
let underlyingNSError = underlyingError as NSError
XCTAssertEqual(underlyingNSError.domain, NSURLErrorDomain)
XCTAssertEqual(underlyingNSError.code, URLError.Code.badServerResponse.rawValue)
}
func testGenerateContent_failure_invalidResponse() async throws {
MockURLProtocol.requestHandler = try httpRequestHandler(
forResource: "unary-failure-invalid-response",
withExtension: "json",
subdirectory: vertexSubdirectory
)
var responseError: Error?
var content: GenerateContentResponse?
do {
content = try await model.generateContent(testPrompt)
} catch {
responseError = error
}
XCTAssertNil(content)
XCTAssertNotNil(responseError)
let generateContentError = try XCTUnwrap(responseError as? GenerateContentError)
guard case let .internalError(underlyingError) = generateContentError else {
XCTFail("Not an internal error: \(generateContentError)")
return
}
let decodingError = try XCTUnwrap(underlyingError as? DecodingError)
guard case let .dataCorrupted(context) = decodingError else {
XCTFail("Not a data corrupted error: \(decodingError)")
return
}
XCTAssert(context.debugDescription.hasPrefix("Failed to decode GenerateContentResponse"))
}
func testGenerateContent_failure_malformedContent() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-malformed-content",
withExtension: "json",
subdirectory: vertexSubdirectory
)
var responseError: Error?
var content: GenerateContentResponse?
do {
content = try await model.generateContent(testPrompt)
} catch {
responseError = error
}
XCTAssertNil(content)
XCTAssertNotNil(responseError)
let generateContentError = try XCTUnwrap(responseError as? GenerateContentError)
guard case let .internalError(underlyingError) = generateContentError else {
XCTFail("Not an internal error: \(generateContentError)")
return
}
let invalidCandidateError = try XCTUnwrap(underlyingError as? InvalidCandidateError)
guard case let .malformedContent(malformedContentUnderlyingError) = invalidCandidateError else {
XCTFail("Not a malformed content error: \(invalidCandidateError)")
return
}
_ = try XCTUnwrap(
malformedContentUnderlyingError as? DecodingError,
"Not a decoding error: \(malformedContentUnderlyingError)"
)
}
func testGenerateContentMissingSafetyRatings() async throws {
MockURLProtocol.requestHandler = try httpRequestHandler(
forResource: "unary-success-missing-safety-ratings",
withExtension: "json",
subdirectory: vertexSubdirectory
)
let content = try await model.generateContent(testPrompt)
let promptFeedback = try XCTUnwrap(content.promptFeedback)
XCTAssertEqual(promptFeedback.safetyRatings.count, 0)
XCTAssertEqual(content.text, "This is the generated content.")
}
func testGenerateContent_requestOptions_customTimeout() async throws {
let expectedTimeout = 150.0
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-success-basic-reply-short",
withExtension: "json",
subdirectory: vertexSubdirectory,
timeout: expectedTimeout
)
let requestOptions = RequestOptions(timeout: expectedTimeout)
model = GenerativeModel(
modelName: testModelName,
modelResourceName: testModelResourceName,
firebaseInfo: testFirebaseInfo(),
apiConfig: apiConfig,
tools: nil,
requestOptions: requestOptions,
urlSession: urlSession
)
let response = try await model.generateContent(testPrompt)
XCTAssertEqual(response.candidates.count, 1)
}
// MARK: - Generate Content (Streaming)
func testGenerateContentStream_failureInvalidAPIKey() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-api-key",
withExtension: "json",
subdirectory: vertexSubdirectory
)
do {
let stream = try model.generateContentStream("Hi")
for try await _ in stream {
XCTFail("No content is there, this shouldn't happen.")
}
} catch let GenerateContentError.internalError(error as BackendError) {
XCTAssertEqual(error.httpResponseCode, 400)
XCTAssertEqual(error.status, .invalidArgument)
XCTAssertEqual(error.message, "API key not valid. Please pass a valid API key.")
XCTAssertTrue(error.localizedDescription.contains(error.message))
XCTAssertTrue(error.localizedDescription.contains(error.status.rawValue))
XCTAssertTrue(error.localizedDescription.contains("\(error.httpResponseCode)"))
let nsError = error as NSError
XCTAssertEqual(nsError.domain, "\(Constants.baseErrorDomain).\(BackendError.self)")
XCTAssertEqual(nsError.code, error.httpResponseCode)
return
}
XCTFail("Should have caught an error.")
}
func testGenerateContentStream_failure_vertexAIInFirebaseAPINotEnabled() async throws {
let expectedStatusCode = 403
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "unary-failure-firebasevertexai-api-not-enabled",
withExtension: "json",
subdirectory: vertexSubdirectory,
statusCode: expectedStatusCode
)
do {
let stream = try model.generateContentStream(testPrompt)
for try await _ in stream {
XCTFail("No content is there, this shouldn't happen.")
}
} catch let GenerateContentError.internalError(error as BackendError) {
XCTAssertEqual(error.httpResponseCode, expectedStatusCode)
XCTAssertEqual(error.status, .permissionDenied)
XCTAssertTrue(error.message
.starts(with: "Vertex AI in Firebase API has not been used in project"))
XCTAssertTrue(error.isVertexAIInFirebaseServiceDisabledError())
return
}
XCTFail("Should have caught an error.")
}
func testGenerateContentStream_failureEmptyContent() async throws {
MockURLProtocol
.requestHandler = try httpRequestHandler(
forResource: "streaming-failure-empty-content",
withExtension: "txt",
subdirectory: vertexSubdirectory
)
do {
let stream = try model.generateContentStream("Hi")
for try await _ in stream {
XCTFail("No content is there, this shouldn't happen.")
}
} catch GenerateContentError.internalError(_ as InvalidCandidateError) {
// Underlying error is as expected, nothing else to check.
return
}