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Testing.adoc

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AddressBook Level 4 - Testing

1. Running Tests

There are three ways to run tests.

💡
 The most reliable way to run tests is the 3rd one. The first two methods might fail some GUI tests due to platform/resolution-specific idiosyncrasies.

Method 1: Using IntelliJ JUnit test runner

  • To run all tests, right-click on the src/test/java folder and choose Run 'All Tests'

  • To run a subset of tests, you can right-click on a test package, test class, or a test and choose Run 'ABC'

Method 2: Using Gradle

  • Open a console and run the command gradlew clean allTests (Mac/Linux: ./gradlew clean allTests)

ℹ️
 See UsingGradle.adoc for more info on how to run tests using Gradle.

Method 3: Using Gradle (headless)

Thanks to the TestFX library we use, our GUI tests can be run in the headless mode. In the headless mode, GUI tests do not show up on the screen. That means the developer can do other things on the Computer while the tests are running.

To run tests in headless mode, open a console and run the command gradlew clean headless allTests (Mac/Linux: ./gradlew clean headless allTests)

2. Types of tests

We have two types of tests:

  1. GUI Tests - These are tests involving the GUI. They include,

    1. System Tests that test the entire App by simulating user actions on the GUI. These are in the systemtests package.

    2. Unit tests that test the individual components. These are in seedu.address.ui package.

  2. Non-GUI Tests - These are tests not involving the GUI. They include,

    1. Unit tests targeting the lowest level methods/classes.
      e.g. seedu.address.commons.StringUtilTest

    2. Integration tests that are checking the integration of multiple code units (those code units are assumed to be working).
      e.g. seedu.address.storage.StorageManagerTest

    3. Hybrids of unit and integration tests. These test are checking multiple code units as well as how the are connected together.
      e.g. seedu.address.logic.LogicManagerTest

3. Troubleshooting Testing

Problem: HelpWindowTest fails with a NullPointerException.

  • Reason: One of its dependencies, HelpWindow.html in src/main/resources/docs is missing.

  • Solution: Execute Gradle task processResources.

Problem: Keyboard and mouse movements are not simulated on macOS Mojave, resulting in GUI Tests failure.

  • Reason: From macOS Mojave onwards, applications without Accessibility permission cannot simulate certain keyboard and mouse movements.

  • Solution: Open System Preferences, click Security and Privacy → Privacy → Accessibility, and check the box beside Intellij IDEA.

testfx idea accessibility permissions
Figure 1. Accessibility permission is granted to IntelliJ IDEA