Test Impact Analysis for Swift

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Compatibility

Test Impact Analysis is only supported on dd-sdk-swift-testing in versions 2.2.0+.

Setup

Test Optimization

Prior to setting up Test Impact Analysis, set up Test Optimization for Swift. The code coverage option must also be enabled in the test settings of your scheme or test plan, or --enable-code-coverage must be added to your Swift test command (if using a SPM target).

If you are reporting data through the Agent, use v6.40 and later or v7.40 and later.

テストサービスの Test Impact Analysis を有効にする

あなた、またはあなたの組織で Intelligent Test Runner Activation (intelligent_test_runner_activation_write) 権限を持つユーザーが、テストサービス設定ページで Test Impact Analysis を有効にする必要があります。

Test Impact Analysis enabled in test service settings in the CI section of Datadog.

Run tests with Test Impact Analysis enabled

After completing setup, run your tests as you normally do.

Disabling skipping for specific tests

You can override the Test Impact Analysis’s behavior and prevent specific tests from being skipped. These tests are referred to as unskippable tests.

Why make tests unskippable?

Test Impact Analysis uses code coverage data to determine whether or not tests should be skipped. In some cases, this data may not be sufficient to make this determination.

Examples include:

Tests that read data from text files
Tests that interact with APIs outside of the code being tested (such as remote REST APIs)
Tests that run external processes
Tests that depend on global shared state (for example, caches created by a different test or process)
Tests that use forked processes (per test code coverage only collects coverage for the main process)
Integration tests that use capybara or selenium-webdriver

Designating tests as unskippable ensures that Test Impact Analysis runs them regardless of coverage data.

Marking tests as unskippable

import XCTest
import DatadogSDKTesting

class SomeTestCase: XCTestCase {
  func testMethod() {}
}

extension SomeTestCase: ExtendableTaggedType {
  static func extendableTypeTags() -> ExtendableTypeTags {
    withTagger { tagger in
      // Mark all class unskippable
      tagger.set(type: .itrSkippable, to: false)
      // Set only one method unskippable
      tagger.set(instance: .itrSkippable, to: false, method: #selector(testMethod))
    }
  }
}