Flutter
matcher
isNull constant
isNull
matcher library
Classes
CustomMatcher
Description
isInstanceOf
Matcher
StringDescription
TypeMatcher
Constants
anything
isArgumentError
isConcurrentModificationError
isCyclicInitializationError
isEmpty
isException
isFalse
isFormatException
isList
isMap
isNaN
isNegative
isNonNegative
isNonPositive
isNonZero
isNoSuchMethodError
isNotEmpty
isNotNaN
isNotNull
isNull
isNullThrownError
isPositive
isRangeError
isStateError
isTrue
isUnimplementedError
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isZero
returnsNormally
Functions
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closeTo
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contains
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everyElement
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hasLength
inClosedOpenRange
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isIn
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wrapMatcher
isNull top-level constant
const
isNull
=
const _IsNull()
A matcher that matches any null value.
Implementation
const Matcher isNull = const _IsNull()