Testing

Banjo has built-in features for unit testing. To create a test, add a function with the @test attribute somewhere in your code:

@test func test() {
    # ...
}

The test can be run using:

banjo test

This command looks for all functions with the @test attribute and runs them.

Compiling...
Linking...
Running...

Tests:
  main.test ... OK

Passed: 1/1

The std.test module provides assertions to check conditions in your tests.

use std.test.assert_eq;

@test func test() {
    var a = 10;
    assert_eq(a, 10);
}

The error messages of failed tests are displayed on the command line.

use std.test.assert_eq;

@test func failing_test() {
    var a = 5;
    assert_eq(a, 10);
}

> banjo test

Compiling...
Linking...
Running...

Tests:
  main.failing_test ... FAILED

Failures:
  main.failing_test: assertion failed: 5 != 10

Passed: 0/1