dd-sdk-ios/DatadogSessionReplay/Tests/Feature/RUMContextReceiverTests.swift at 2dd53ebd5dd38c889eb441ecbb698394622d6752 · DataDog/dd-sdk-ios · GitHub

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/*
 * Unless explicitly stated otherwise all files in this repository are licensed under the Apache License Version 2.0.
 * This product includes software developed at Datadog (https://www.datadoghq.com/).
 * Copyright 2019-Present Datadog, Inc.
 */

#if os(iOS)
import XCTest
import TestUtilities
import DatadogInternal

@testable import DatadogSessionReplay

class RUMContextReceiverTests: XCTestCase {
    private let receiver = RUMContextReceiver()

    func testWhenMessageContainsNonEmptyRUMContext_itNotifiesRUMContext() throws {
        // Given
        let core = PassthroughCoreMock()
        let coreContext: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id",
                    sessionID: "session-id",
                    sessionSampler: .mockKeepAll(),
                    viewID: "view-id",
                    viewServerTimeOffset: 123
                )
            ]
        )

        var rumContext: RUMCoreContext?
        receiver.observe(on: NoQueue()) { context in
            rumContext = context
        }

        // When
        receiver.receive(message: coreContext, from: core)

        // Then
        XCTAssertEqual(rumContext?.applicationID, "app-id")
        XCTAssertEqual(rumContext?.sessionID, "session-id")
        XCTAssertEqual(rumContext?.viewID, "view-id")
        XCTAssertEqual(rumContext?.viewServerTimeOffset, 123)
    }

    func testWhenSucceedingMessagesContainDifferentRUMContexts_itNotifiesRUMContextChange() throws {
        // Given
        let core = PassthroughCoreMock()
        let coreContext1: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id-1",
                    sessionID: "session-id-1",
                    sessionSampler: .mockKeepAll(),
                    viewID: "view-id-1",
                    viewServerTimeOffset: 123
                )
            ]
        )

        let coreContext2: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id-2",
                    sessionID: "session-id-2",
                    sessionSampler: DeterministicSampler.mockKeepAll(),
                    viewID: "view-id-2",
                    viewServerTimeOffset: 345
                )
            ]
        )

        var rumContexts: [RUMCoreContext] = []
        receiver.observe(on: NoQueue()) { context in
            context.flatMap { rumContexts.append($0) }
        }
        // When
        receiver.receive(message: coreContext1, from: core)
        receiver.receive(message: coreContext2, from: core)

        // Then
        XCTAssertEqual(rumContexts.count, 2)
        XCTAssertEqual(rumContexts[0].applicationID, "app-id-1")
        XCTAssertEqual(rumContexts[0].sessionID, "session-id-1")
        XCTAssertEqual(rumContexts[0].viewID, "view-id-1")
        XCTAssertEqual(rumContexts[0].viewServerTimeOffset, 123)
        XCTAssertEqual(rumContexts[1].applicationID, "app-id-2")
        XCTAssertEqual(rumContexts[1].sessionID, "session-id-2")
        XCTAssertEqual(rumContexts[1].viewID, "view-id-2")
        XCTAssertEqual(rumContexts[1].viewServerTimeOffset, 345)
    }

    func testWhenSucceedingMessagesContainSameRUMContexts_itNotifiesRUMContextChangeOnce() throws {
        // Given
        let core = PassthroughCoreMock()
        let coreContext1: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id",
                    sessionID: "session-id",
                    sessionSampler: .mockKeepAll(),
                    viewID: "view-id",
                    viewServerTimeOffset: 123
                )
            ]
        )

        let coreContext2: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id",
                    sessionID: "session-id",
                    sessionSampler: .mockKeepAll(),
                    viewID: "view-id",
                    viewServerTimeOffset: 123
                )
            ]
        )

        var rumContexts: [RUMCoreContext] = []
        receiver.observe(on: NoQueue()) { context in
            context.flatMap { rumContexts.append($0) }
        }
        // When
        receiver.receive(message: coreContext1, from: core)
        receiver.receive(message: coreContext2, from: core)

        // Then
        XCTAssertEqual(rumContexts.count, 1)
        XCTAssertEqual(rumContexts[0].applicationID, "app-id")
        XCTAssertEqual(rumContexts[0].sessionID, "session-id")
        XCTAssertEqual(rumContexts[0].viewID, "view-id")
        XCTAssertEqual(rumContexts[0].viewServerTimeOffset, 123)
    }

    func testWhenMessageContainsNoRUMContext_itResetRUMContext() throws {
        // Given
        let core = PassthroughCoreMock()
        let coreContext1: DatadogContext = .mockWith(
            additionalContext: [
                RUMCoreContext(
                    applicationID: "app-id",
                    sessionID: "session-id",
                    sessionSampler: .mockKeepAll(),
                    viewID: "view-id",
                    viewServerTimeOffset: 123
                )
            ]
        )

        let coreContext2: DatadogContext = .mockWith()

        var rumContext: RUMCoreContext? = .mockAny()
        receiver.observe(on: NoQueue()) { context in
            rumContext = context
        }

        // When
        receiver.receive(message: coreContext1, from: core)

        XCTAssertEqual(rumContext?.applicationID, "app-id")
        XCTAssertEqual(rumContext?.sessionID, "session-id")
        XCTAssertEqual(rumContext?.viewID, "view-id")
        XCTAssertEqual(rumContext?.viewServerTimeOffset, 123)

        // When
        receiver.receive(message: coreContext2, from: core)
        // Then
        XCTAssertNil(rumContext)
    }

    func testWhenNoMessageIsReceived_observerIsNotCalled() throws {
        // Given
        let expectation = expectation(description: "observe not called")
        expectation.isInverted = true

        receiver.observe(on: NoQueue()) { _ in
            expectation.fulfill()
        }

        // Then — no message delivered, observer must stay silent
        waitForExpectations(timeout: 0.1)
    }
}
#endif