SwiftlySalesforce/Tests/SwiftlySalesforceTests/DefaultAuthorizerTests.swift at master · mike4aday/SwiftlySalesforce · GitHub

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import XCTest
@testable import SwiftlySalesforce

class DefaultAuthorizerTests: XCTestCase {

    // Note: user must successfully authenticate for the test to pass
    func testThatItAuthenticates() async throws {

        // Given
        let config = try loadConfiguration()
        let authorizer = DefaultAuthorizer(consumerKey: config.consumerKey, callbackURL: config.callbackURL)

        // When
        let credential = try await authorizer.grantCredential(refreshing: nil)

        // Then
        XCTAssertNotNil(credential)
    }

    // Note: testing user must successfully authenticate for this test to pass
    func testThatItAuthenticatesConcurrently() async throws {

        // Given
        let config = try loadConfiguration()
        let authorizer = DefaultAuthorizer(consumerKey: config.consumerKey, callbackURL: config.callbackURL)
        let taskCount = 30

        // When
        let credentials = try await withThrowingTaskGroup(of: Credential.self) { group -> [Credential] in

            var creds = [Credential]()
            creds.reserveCapacity(taskCount)

            for _ in 0..<taskCount {
                group.addTask {
                    return try await authorizer.grantCredential(refreshing: nil)
                }
            }

            for try await cred in group {
                creds.append(cred)
            }
            return creds
        }

        // Then
        XCTAssertTrue(credentials.dropLast().allSatisfy { $0 == credentials.last })
    }

    // Note: testing user must successfully authenticate for this test to pass
    func testThatItLogsInAndRefreshesConcurrently() async throws {

        // Given
        let config = try loadConfiguration()
        let authorizer = DefaultAuthorizer(consumerKey: config.consumerKey, callbackURL: config.callbackURL)
        let initialCredential = try await authorizer.grantCredential(refreshing: nil)
        let taskCount = 30

        // When
        let credentials = try await withThrowingTaskGroup(of: Credential.self) { group -> [Credential] in

            var creds = [Credential]()
            creds.reserveCapacity(taskCount)

            for n in 0..<taskCount {
                group.addTask {
                    return try await authorizer.grantCredential(refreshing: n % 2 == 0 ? initialCredential : nil)
                }
            }

            for try await cred in group {
                creds.append(cred)
            }
            return creds
        }

        // Then
        XCTAssertTrue(credentials.dropLast().allSatisfy { $0 == credentials.last })
    }
}