object ScalacheckDatetimeSection extends Checkers with Matchers with Section
scalacheck-datetime is a library for helping use datetime libraries with ScalaCheck
The motivation behind this library is to provide a simple, easy way to provide generated date and time instances that are useful to your own domain.
For SBT, you can add the dependency to your project’s build file:
resolvers += Resolver.sonatypeRepo("releases") "com.47deg" %% "scalacheck-toolbox-datetime" % "0.3.1" % "test"
Please, visit the homepage for more information
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- def all[K, V, MAP[k, v] <: GenMap[k, v]](xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
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- def all[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
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- def atLeast[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
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- def atLeast[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
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- def atLeast[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
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- def atLeastOneElementOf(elements: GenTraversable[Any]): ResultOfAtLeastOneElementOfApplication
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- def atLeastOneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfAtLeastOneOfApplication
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- def atMost(num: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
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- def atMost[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
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- def atMost[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
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- def atMost[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
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- def atMostOneElementOf[R](elements: GenTraversable[R]): ResultOfAtMostOneElementOfApplication
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- def atMostOneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfAtMostOneOfApplication
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- def between[K, V, JMAP[k, v] <: Map[k, v]](from: Int, upTo: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
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- def between[E, C[_]](from: Int, upTo: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
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- def cancel(cause: Throwable)(implicit pos: Position): Nothing
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- def check(p: Prop, prms: Parameters)(implicit prettifier: Prettifier, pos: Position): Assertion
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- def check[A1, A2, A3, A4, A5, A6, P](f: (A1, A2, A3, A4, A5, A6) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, a2: Arbitrary[A2], s2: Shrink[A2], pp2: (A2) => Pretty, a3: Arbitrary[A3], s3: Shrink[A3], pp3: (A3) => Pretty, a4: Arbitrary[A4], s4: Shrink[A4], pp4: (A4) => Pretty, a5: Arbitrary[A5], s5: Shrink[A5], pp5: (A5) => Pretty, a6: Arbitrary[A6], s6: Shrink[A6], pp6: (A6) => Pretty, prettifier: Prettifier, pos: Position): Assertion
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- def check[A1, A2, A3, A4, A5, P](f: (A1, A2, A3, A4, A5) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, a2: Arbitrary[A2], s2: Shrink[A2], pp2: (A2) => Pretty, a3: Arbitrary[A3], s3: Shrink[A3], pp3: (A3) => Pretty, a4: Arbitrary[A4], s4: Shrink[A4], pp4: (A4) => Pretty, a5: Arbitrary[A5], s5: Shrink[A5], pp5: (A5) => Pretty, prettifier: Prettifier, pos: Position): Assertion
- Definition Classes
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- def check[A1, A2, A3, A4, P](f: (A1, A2, A3, A4) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, a2: Arbitrary[A2], s2: Shrink[A2], pp2: (A2) => Pretty, a3: Arbitrary[A3], s3: Shrink[A3], pp3: (A3) => Pretty, a4: Arbitrary[A4], s4: Shrink[A4], pp4: (A4) => Pretty, prettifier: Prettifier, pos: Position): Assertion
- Definition Classes
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- def check[A1, A2, A3, P](f: (A1, A2, A3) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, a2: Arbitrary[A2], s2: Shrink[A2], pp2: (A2) => Pretty, a3: Arbitrary[A3], s3: Shrink[A3], pp3: (A3) => Pretty, prettifier: Prettifier, pos: Position): Assertion
- Definition Classes
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- def check[A1, A2, P](f: (A1, A2) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, a2: Arbitrary[A2], s2: Shrink[A2], pp2: (A2) => Pretty, prettifier: Prettifier, pos: Position): Assertion
- Definition Classes
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- def check[A1, P](f: (A1) => P, configParams: PropertyCheckConfigParam*)(implicit config: PropertyCheckConfiguration, p: (P) => Prop, a1: Arbitrary[A1], s1: Shrink[A1], pp1: (A1) => Pretty, prettifier: Prettifier, pos: Position): Assertion
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- def clone(): AnyRef
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- val compile: CompileWord
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- val contain: ContainWord
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- def convertEquivalenceToAToBConstraint[A, B](equivalenceOfB: Equivalence[B])(implicit ev: <:<[A, B]): CanEqual[A, B]
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- TripleEquals → TripleEqualsSupport
- def convertEquivalenceToBToAConstraint[A, B](equivalenceOfA: Equivalence[A])(implicit ev: <:<[B, A]): CanEqual[A, B]
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- TripleEquals → TripleEqualsSupport
- implicit def convertNumericToPlusOrMinusWrapper[T](pivot: T)(implicit arg0: Numeric[T]): PlusOrMinusWrapper[T]
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- implicit def convertSymbolToHavePropertyMatcherGenerator(symbol: Symbol)(implicit prettifier: Prettifier, pos: Position): HavePropertyMatcherGenerator
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- implicit def convertToAnyShouldWrapper[T](o: T)(implicit pos: Position, prettifier: Prettifier): AnyShouldWrapper[T]
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- def convertToCheckingEqualizer[T](left: T): CheckingEqualizer[T]
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- TripleEquals → TripleEqualsSupport
- implicit def convertToEqualizer[T](left: T): Equalizer[T]
- Definition Classes
- TripleEquals → TripleEqualsSupport
- implicit def convertToRegexWrapper(o: Regex): RegexWrapper
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- implicit def convertToStringShouldWrapper(o: String)(implicit pos: Position, prettifier: Prettifier): StringShouldWrapper
- Definition Classes
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- implicit def convertToStringShouldWrapperForVerb(o: String)(implicit position: Position): StringShouldWrapperForVerb
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- val decided: DecidedWord
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- def defaultEquality[A]: Equality[A]
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- val defined: DefinedWord
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- def definedAt[T](right: T): ResultOfDefinedAt[T]
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- val determined: DeterminedWord
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- val empty: EmptyWord
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- val endWith: EndWithWord
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- final def eq(arg0: AnyRef): Boolean
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- AnyRef
- def equal(o: Null): Matcher[AnyRef]
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- def equal[T](spread: Spread[T]): Matcher[T]
- Definition Classes
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- def equal(right: Any): MatcherFactory1[Any, Equality]
- Definition Classes
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- def equals(arg0: AnyRef): Boolean
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- AnyRef → Any
- def every(xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
- Definition Classes
- Matchers
- def every[K, V, JMAP[k, v] <: Map[k, v]](xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
- Definition Classes
- Matchers
- def every[K, V, MAP[k, v] <: Map[k, v]](xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
- Definition Classes
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- def every[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
- Definition Classes
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- def exactly(num: Int, xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
- Definition Classes
- Matchers
- def exactly[K, V, JMAP[k, v] <: Map[k, v]](num: Int, xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
- Definition Classes
- Matchers
- def exactly[K, V, MAP[k, v] <: GenMap[k, v]](num: Int, xs: MAP[K, V])(implicit collecting: Collecting[(K, V), GenTraversable[(K, V)]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[(K, V)]
- Definition Classes
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- def exactly[E, C[_]](num: Int, xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
- Definition Classes
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- val exist: ExistWord
- Definition Classes
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- def fail(cause: Throwable)(implicit pos: Position): Nothing
- Definition Classes
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- def fail(message: String, cause: Throwable)(implicit pos: Position): Nothing
- Definition Classes
- Assertions
- def fail(message: String)(implicit pos: Position): Nothing
- Definition Classes
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- def fail()(implicit pos: Position): Nothing
- Definition Classes
- Assertions
- def finalize(): Unit
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- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- val fullyMatch: FullyMatchWord
- Definition Classes
- MatcherWords
- implicit val generatorDrivenConfig: PropertyCheckConfiguration
- Definition Classes
- Configuration
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- def getParameter(configParams: Seq[PropertyCheckConfigParam], config: PropertyCheckConfiguration): Parameter
- Definition Classes
- Configuration
- def granularity(res0: Int, res1: Int, res2: Int, res3: Int, res4: Int): Assertion
For all of the examples given in this document, you can substitute
jdk8
forjoda
and vice-versa, depending on which library you would like to generate instances for.A note on imports
For all of the examples given in this document, you can substitute
jdk8
forjoda
and vice-versa, depending on which library you would like to generate instances for.Implementation
The infrastructure behind the generation of date/time instances for any given date/time library, which may take ranges into account, is done using a fairly simple typeclass, which has the type signature
ScalaCheckDateTimeInfra[D, R]
. That is to say, as long as there is an implicitScalaCheckDateTimeInfra
instance in scope for a given date/time typeD
(such as Joda’sDateTime
) and a range typeR
(such as Joda’sPeriod
), then the code will compile and be able to provide generated date/time instances.As stated, currently there are two instances,
ScalaCheckDateTimeInfra[DateTime, Period]
for Joda Time andScalaCheckDateTimeInfra[ZonedDateTime, Duration]
for Java SE 8’s Date and Time.Granularity
If you wish to restrict the precision of the generated instances, this library refers to that as granularity.
You can constrain the granularity to:
- Seconds
- Minutes
- Hours
- Days
- Years
When a value is constrained, the time fields are set to zero, and the rest to the first day of the month, or day of the year. For example, if you constrain a field to be years, the generated instance will be midnight exactly, on the first day of January.
To constrain a generated type, you simply need to provide an import for the typeclass for your date/time and range, and also an import for the granularity. As an example, this time using Java SE 8's
java.time
package: - def granularityAndRanges(res0: Int, res1: Int, res2: Int, res3: Int, res4: Int): Assertion
As you would expect, it is possible to use the granularity and range concepts together.
Using Granularity and Ranges Together
As you would expect, it is possible to use the granularity and range concepts together. This example should not show anything surprising by now:
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- val have: HaveWord
- Definition Classes
- MatcherWords
- def inOrder(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfInOrderApplication
- Definition Classes
- Matchers
- def inOrderElementsOf[R](elements: GenTraversable[R]): ResultOfInOrderElementsOfApplication
- Definition Classes
- Matchers
- def inOrderOnly[T](firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfInOrderOnlyApplication
- Definition Classes
- Matchers
- val include: IncludeWord
- Definition Classes
- MatcherWords
- def intercept[T <: AnyRef](f: => Any)(implicit classTag: ClassTag[T], pos: Position): T
- Definition Classes
- Assertions
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- val key: KeyWord
- Definition Classes
- Matchers
- val length: LengthWord
- Definition Classes
- MatcherWords
- def lowPriorityTypeCheckedConstraint[A, B](implicit equivalenceOfB: Equivalence[B], ev: <:<[A, B]): CanEqual[A, B]
- Definition Classes
- TripleEquals → TripleEqualsSupport
- val matchPattern: MatchPatternWord
- Definition Classes
- MatcherWords
- def maxDiscardedFactor(value: PosZDouble): MaxDiscardedFactor
- Definition Classes
- Configuration
- def message(expectedMessage: String): ResultOfMessageWordApplication
- Definition Classes
- Matchers
- def minSize(value: PosZInt): MinSize
- Definition Classes
- Configuration
- def minSuccessful(value: PosInt): MinSuccessful
- Definition Classes
- Configuration
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def no(xs: String)(implicit collecting: Collecting[Char, String], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Char]
- Definition Classes
- Matchers
- def no[K, V, JMAP[k, v] <: Map[k, v]](xs: JMAP[K, V])(implicit collecting: Collecting[Entry[K, V], JMAP[K, V]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[Entry[K, V]]
- Definition Classes
- Matchers
- def no[E, C[_]](xs: C[E])(implicit collecting: Collecting[E, C[E]], prettifier: Prettifier, pos: Position): ResultOfCollectedAny[E]
- Definition Classes
- Matchers
- def noElementsOf(elements: GenTraversable[Any]): ResultOfNoElementsOfApplication
- Definition Classes
- Matchers
- def noException(implicit pos: Position): NoExceptionWord
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- def noneOf(firstEle: Any, secondEle: Any, remainingEles: Any*)(implicit pos: Position): ResultOfNoneOfApplication
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- def ranges(res0: Int): Assertion
You can generate date/time instances only within a certain range, using the
genDateTimeWithinRange
in theGenDateTime
class.Creating Ranges
You can generate date/time instances only within a certain range, using the
genDateTimeWithinRange
in theGenDateTime
class. The function takes two parameters, the date/time instances as a base from which to generate new date/time instances, and a range for the generated instances.If the range is positive, it will be in the future from the base date/time, negative in the past.
Showing this usage with Joda Time:
- val readable: ReadableWord
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- val size: SizeWord
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- def sizeRange(value: PosZInt): SizeRange
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- val sorted: SortedWord
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- val typeCheck: TypeCheckWord
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- def typeCheckedConstraint[A, B](implicit equivalenceOfA: Equivalence[A], ev: <:<[B, A]): CanEqual[A, B]
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- implicit def unconstrainedEquality[A, B](implicit equalityOfA: Equality[A]): CanEqual[A, B]
- Definition Classes
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- def usage(res0: Boolean): Assertion
To arbitrarily generate dates and times, you need to have the
Arbitrary
in scope for your date/time class.Usage
To arbitrarily generate dates and times, you need to have the
Arbitrary
in scope for your date/time class. Assuming Joda Time: - val value: ValueWord
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- val writable: WritableWord
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Deprecated Value Members
- def conversionCheckedConstraint[A, B](implicit equivalenceOfA: Equivalence[A], cnv: (B) => A): CanEqual[A, B]
- Definition Classes
- TripleEquals → TripleEqualsSupport
- Annotations
- @deprecated
- Deprecated
(Since version 3.1.0) The conversionCheckedConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.
- def convertEquivalenceToAToBConversionConstraint[A, B](equivalenceOfB: Equivalence[B])(implicit ev: (A) => B): CanEqual[A, B]
- Definition Classes
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- @deprecated
- Deprecated
(Since version 3.1.0) The convertEquivalenceToAToBConversionConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.
- def convertEquivalenceToBToAConversionConstraint[A, B](equivalenceOfA: Equivalence[A])(implicit ev: (B) => A): CanEqual[A, B]
- Definition Classes
- TripleEquals → TripleEqualsSupport
- Annotations
- @deprecated
- Deprecated
(Since version 3.1.0) The convertEquivalenceToBToAConversionConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.
- def lowPriorityConversionCheckedConstraint[A, B](implicit equivalenceOfB: Equivalence[B], cnv: (A) => B): CanEqual[A, B]
- Definition Classes
- TripleEquals → TripleEqualsSupport
- Annotations
- @deprecated
- Deprecated
(Since version 3.1.0) The lowPriorityConversionCheckedConstraint method has been deprecated and will be removed in a future version of ScalaTest. It is no longer needed now that the deprecation period of ConversionCheckedTripleEquals has expired. It will not be replaced.