fluent_assertions

Description:

fluent assertions

The Fluent Assertions library written in Dart.
It uses Dart's Extension Functions to provide a fluent wrapper around test assertions.
Usage #
Basic Assertions
These assertions are available for all objects.
Equality
'Hello'.shouldBeEqualTo('Hello');
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'Hello'.shouldNotBeEqualTo('Word');
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Reference equality
final me = Person(name: 'Karol');
final someoneElse = Person(name: 'Karol');
me.shouldBe(me);
me.shouldNotBe(someoneElse);
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Subtypes
const num numberOfGirlsIAttract = 0;
numberOfGirlsIAttract.shouldBeInstanceOf<int>();
numberOfGirlsIAttract.shouldNotBeInstanceOf<double>();
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Nullability
const hello = 'Hello';
hello.shouldNotBeNull();
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const hello = null;
hello.shouldBeNull();
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Booleans
const hasChildren = true;
hasChildren.shouldBeTrue();
hasChildren.shouldNotBeFalse();
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const hasChildren = false;
hasChildren.shouldBeFalse();
hasChildren.shouldNotBeTrue();
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Numerical Assertions
2.shouldBeGreaterOrEqualTo(2);
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2.shouldBeGreaterThan(1);
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2.shouldBeLessOrEqualTo(2);
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1.shouldBeLessThan(2);
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1.shouldBePositive();
1.shouldNotBeNegative();
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(-1).shouldBeNegative();
(-1).shouldNotBePositive();
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0.shouldBeZero();
1.shouldNotBeZero();
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0.999.shouldBeNear(1, delta: 0.01);
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0.shouldNotBeInRange(lowerBound: 1, upperBound: 6);
1.shouldBeInRange(lowerBound: 1, upperBound: 6);
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String Assertions
'Flutter'.shouldBeEqualToIgnoringCase('FLUTTER');
'Flutter'.shouldNotBeEqualToIgnoringCase('Xamarin');
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'Flutter rules'.shouldStartWith('Flutter');
'Flutter rules'.shouldNotStartWith('Xamarin');
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'Flutter rules'.shouldStartWithIgnoringCase('FLUTTER');
'Flutter rules'.shouldNotStartWithIgnoringCase('Xamarin');
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'I love Flutter'.shouldEndWith('Flutter');
'I love Flutter'.shouldNotEndWith('Xamarin');
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'I love Flutter'.shouldEndWithIgnoringCase('flutter');
'I love Flutter'.shouldNotEndWithIgnoringCase('xamarin');
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'I love Flutter'.shouldContain('love');
'I love Flutter'.shouldNotContain('hate');
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'I love Flutter'.shouldContainIgnoringCase('LOVE');
'I love Flutter'.shouldNotContainIgnoringCase('HATE');
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'I love Flutter'.shouldContainAll(['Flutter', 'love']);
'I love Flutter'.shouldContainAllIgnoringCase(['flutter', 'love']);
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'I love Flutter'.shouldContainAllInOrder(['love', 'Flutter']);
'I love Flutter'.shouldContainAllInOrderIgnoringCase(['Love', 'Flutter']);
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'12345'.shouldMatch(r'\d');
'Hello'.shouldNotMatch(r'\d');
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''.shouldBeEmpty()
'name'.shouldNotBeEmpty()
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''.shouldBeNullOrEmpty()
'name'.shouldNotBeNullOrEmpty()
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' '.shouldBeBlank()
'name'.shouldNotBeBlank()
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' '.shouldBeNullOrBlank()
'name'.shouldNotBeNullOrBlank()
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Collection Assertions
Features and bugs #
Please file feature requests and bugs at the issue tracker.
Author #

Karol Lisiewicz