test/numeric_matchers_test.dart

// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:matcher/matcher.dart';
import 'package:test/test.dart';

import 'test_utils.dart';

void main() {
  test('closeTo', () {
    shouldPass(0, closeTo(0, 1));
    shouldPass(-1, closeTo(0, 1));
    shouldPass(1, closeTo(0, 1));
    shouldFail(
        1.001,
        closeTo(0, 1),
        'Expected: a numeric value within <1> of <0> '
        'Actual: <1.001> '
        'Which: differs by <1.001>');
    shouldFail(
        -1.001,
        closeTo(0, 1),
        'Expected: a numeric value within <1> of <0> '
        'Actual: <-1.001> '
        'Which: differs by <1.001>');
    shouldFail(
        'not a num', closeTo(0, 1), endsWith('not an <Instance of \'num\'>'));
  });

  test('inInclusiveRange', () {
    shouldFail(
        -1,
        inInclusiveRange(0, 2),
        'Expected: be in range from 0 (inclusive) to 2 (inclusive) '
        'Actual: <-1>');
    shouldPass(0, inInclusiveRange(0, 2));
    shouldPass(1, inInclusiveRange(0, 2));
    shouldPass(2, inInclusiveRange(0, 2));
    shouldFail(
        3,
        inInclusiveRange(0, 2),
        'Expected: be in range from 0 (inclusive) to 2 (inclusive) '
        'Actual: <3>');
    shouldFail('not a num', inInclusiveRange(0, 1),
        endsWith('not an <Instance of \'num\'>'));
  });

  test('inExclusiveRange', () {
    shouldFail(
        0,
        inExclusiveRange(0, 2),
        'Expected: be in range from 0 (exclusive) to 2 (exclusive) '
        'Actual: <0>');
    shouldPass(1, inExclusiveRange(0, 2));
    shouldFail(
        2,
        inExclusiveRange(0, 2),
        'Expected: be in range from 0 (exclusive) to 2 (exclusive) '
        'Actual: <2>');
    shouldFail('not a num', inExclusiveRange(0, 1),
        endsWith('not an <Instance of \'num\'>'));
  });

  test('inOpenClosedRange', () {
    shouldFail(
        0,
        inOpenClosedRange(0, 2),
        'Expected: be in range from 0 (exclusive) to 2 (inclusive) '
        'Actual: <0>');
    shouldPass(1, inOpenClosedRange(0, 2));
    shouldPass(2, inOpenClosedRange(0, 2));
    shouldFail('not a num', inOpenClosedRange(0, 1),
        endsWith('not an <Instance of \'num\'>'));
  });

  test('inClosedOpenRange', () {
    shouldPass(0, inClosedOpenRange(0, 2));
    shouldPass(1, inClosedOpenRange(0, 2));
    shouldFail(
        2,
        inClosedOpenRange(0, 2),
        'Expected: be in range from 0 (inclusive) to 2 (exclusive) '
        'Actual: <2>');
    shouldFail('not a num', inClosedOpenRange(0, 1),
        endsWith('not an <Instance of \'num\'>'));
  });

  group('NaN', () {
    test('inInclusiveRange', () {
      shouldFail(
          double.nan,
          inExclusiveRange(double.negativeInfinity, double.infinity),
          'Expected: be in range from '
          '-Infinity (exclusive) to Infinity (exclusive) '
          'Actual: <NaN>');
    });
  });
}