Testing

osl test discovers files ending in .test.osl. With no path, it walks the current directory. Hidden directories, vendor, and node_modules are skipped.

osl test
osl test src/
osl test src/users/validation.test.osl

Test files are ordinary OSL programs. A thrown error or failed assertion makes the file fail.

Assertions

import "std:testing"

testing.equal(add(2, 3), 5)
testing.notEqual(status, "failed")
testing.near(measured, 10, 0.01)
testing.isNull(optional)
testing.notNull(record)
testing.assert(items.len > 0)
testing.panics(def() -> (
  throw "expected"
))

Each assertion accepts an optional final message. testing.fail(message) fails immediately.

Direct checks

For small focused tests, direct checks and throw are often clearer than an assertion wrapper:

object parsed = parseInput(source)

if parsed.name != "Ada" (
  throw "parseInput should preserve the name"
)

The OriginChats test files use this style for domain behavior. It keeps the failure message next to the rule being tested.

Discovery and output

The runner sorts discovered paths, compiles each file separately, and prints PASS or FAIL for each one. It returns status 1 if any file fails.