testing library

A conformance suite for FluentBackend implementations.

A backend author (or a satellite package) runs fluentBackendConformanceChecks against a real bundle and wires each returned check into their test runner — this library deliberately does NOT depend on package:test, so the core stays pure:

import 'package:fluent_bundle/testing.dart';
import 'package:fluent_intl/fluent_intl.dart';
import 'package:test/test.dart';

void main() {
  for (final c in fluentBackendConformanceChecks(IntlBackend.new)) {
    test(c.name, c.run);
  }
}

The pieces live under src/testing/: BackendExpectations declares a backend's capability set; the check groups (checks_core, checks_number, checks_datetime, checks_degrade) test every flag in both directions — positive render when true, degrade+error when false.

Classes

BackendExpectations

What a particular backend is expected to support. The spec-fallback FluentBackend sets everything false; CLDR backends declare exactly what they render. Every flag here has a matching conformance check — a backend's declaration IS tested, in both directions: a true flag runs the positive rendering check, and (under recordsUnsupportedOptionErrors) a false flag runs the degrade check (still renders, records an error, never throws).

Functions

fluentBackendConformanceChecks(FluentBackend create(), {BackendExpectations expectations = const BackendExpectations()}) → List<ConformanceCheck>

Build the conformance checks for the backend produced by create, gated by expectations.

Typedefs

ConformanceCheck = ({String name, void Function() run})

One named conformance check: its run throws on failure.