Test Canvas Android Apps

Run unit tests, instrumentation tests, and Espresso tests for Canvas Android apps.

Test Location

All test commands must be run from the repository root (canvas-android/), not the apps/ directory.

Unit Tests

Unit tests verify business logic in isolation using Mockk for mocking.

Prerequisites

•Set Build Variant to qaDebug in Android Studio, or
•Use command line with testQaDebugUnitTest as shown below

Run Unit Tests for Apps

bash

# Student app - all unit tests
./gradle/gradlew -p apps :student:testQaDebugUnitTest

# Teacher app - all unit tests
./gradle/gradlew -p apps :teacher:testQaDebugUnitTest

# Parent app - all unit tests
./gradle/gradlew -p apps :parent:testQaDebugUnitTest

Run Unit Tests for Shared Libraries

bash

# Test a specific module (e.g., pandautils)
./gradle/gradlew -p apps :pandautils:testDebugUnitTest

# Test specific class or package
./gradle/gradlew -p apps :pandautils:testDebugUnitTest --tests "com.instructure.pandautils.features.discussion.router.*"

# Force re-run tests (ignore cache)
./gradle/gradlew -p apps :pandautils:testDebugUnitTest --rerun-tasks

Run Specific Unit Tests

Use the --tests flag to run specific test classes or methods:

bash

# Run single test class
./gradle/gradlew -p apps :student:testQaDebugUnitTest --tests "com.instructure.student.features.dashboard.DashboardViewModelTest"

# Run tests matching a pattern
./gradle/gradlew -p apps :student:testQaDebugUnitTest --tests "com.instructure.student.features.dashboard.widget.*"

Test Structure

•Unit tests: src/test/java/com/instructure/{app}/features/{feature}/
•Instrumentation tests: src/androidTest/java/com/instructure/{app}/ui/{feature}/

Instrumentation/Espresso Tests

Instrumentation tests run on a device or emulator to test UI interactions.

Prerequisites

Before running UI tests, check for connected devices:

bash

adb devices -l

If multiple devices are connected:

•Prefer running on an emulator if available
•Use ANDROID_SERIAL environment variable or -s flag to specify a device

Run All Instrumentation Tests

bash

# Student app
./gradle/gradlew -p apps :student:connectedQaDebugAndroidTest

# Teacher app
./gradle/gradlew -p apps :teacher:connectedQaDebugAndroidTest

Run Specific Instrumentation Test

bash

# Run single test class
./gradle/gradlew -p apps :student:connectedQaDebugAndroidTest -Pandroid.testInstrumentationRunnerArguments.class=com.instructure.student.ui.dashboard.DashboardPageTest

Target Specific Device

If multiple devices are connected:

bash

# Use environment variable
ANDROID_SERIAL=emulator-5554 ./gradle/gradlew -p apps :student:connectedQaDebugAndroidTest

# Or use adb flag
adb -s emulator-5554 shell ...

Testing Patterns

•Write unit tests in the same style as existing tests (check student/src/test/)
•Write instrumentation tests following existing patterns (check student/src/androidTest/)
•Mock dependencies with Mockk
•Use test doubles for repositories in ViewModel tests
•Espresso tests should use page object pattern from :espresso module
•Ensure tests are isolated and repeatable

Examples

Run all widget tests:

bash

./gradle/gradlew -p apps :student:testQaDebugUnitTest --tests "com.instructure.student.features.dashboard.widget.*"

Run tests and view report:

bash

./gradle/gradlew -p apps :student:testQaDebugUnitTest
open apps/student/build/reports/tests/testQaDebugUnitTest/index.html