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package zio.test
import zio.internal.ansi.AnsiStringOps
import zio.internal.stacktracer.SourceLocation
import zio.stacktracer.TracingImplicits.disableAutoTrace
import zio.test.internal.SmartAssertions
import zio.test.{ErrorMessage => M}
import zio.{Cause, Exit, Trace, ZIO}
import scala.reflect.ClassTag
import scala.util.Try
final case class Assertion[-A](arrow: TestArrow[A, Boolean]) { self =>
def &&[A1 <: A](that: Assertion[A1]): Assertion[A1] =
Assertion(arrow && that.arrow)
def ||[A1 <: A](that: Assertion[A1]): Assertion[A1] =
Assertion(arrow || that.arrow)
def unary_! : Assertion[A] =
Assertion(!arrow)
def negate: Assertion[A] =
Assertion(!arrow)
def test(value: A)(implicit sourceLocation: SourceLocation): Boolean =
TestArrow.run(arrow.withLocation, Right(value)).isSuccess
// TODO: IMPLEMENT LABELING
def label(message: String): Assertion[A] =
Assertion(self.arrow.label(message))
def ??(message: String): Assertion[A] =
self.label(message)
def run(value: => A)(implicit sourceLocation: SourceLocation): TestResult =
Assertion.smartAssert(value)(self)
private[test] def withCode(code: String): Assertion[A] =
Assertion(arrow.withCode(code))
}
object Assertion extends AssertionVariants {
private[test] def smartAssert[A](
expr: => A,
codeString: Option[String] = None,
assertionString: Option[String] = None
)(
assertion: Assertion[A]
)(implicit sourceLocation: SourceLocation): TestResult = {
lazy val value0 = expr
val completeString =
codeString.flatMap(code =>
assertionString.map { assertion =>
code.blue + " did not satisfy " + assertion.cyan
}
)
TestResult(
(TestArrow.succeed(value0).withCode(codeString.getOrElse("input")) >>> assertion.arrow).withLocation
.withCompleteCode(completeString.getOrElse(""))
)
}
private[test] def smartAssertZIO[R, E, A](
expr: => ZIO[R, E, A]
)(assertion: Assertion[A])(implicit trace: Trace, sourceLocation: SourceLocation): ZIO[R, E, TestResult] = {
lazy val value0 = expr
value0.map(smartAssert(_)(assertion))
}
/**
* Makes a new `Assertion` from a function.
*/
def assertion[A](name: String)(run: (=> A) => Boolean): Assertion[A] =
Assertion(
TestArrow
.make[A, Boolean] { a =>
val result = run(a)
TestTrace.boolean(result) {
M.text("Custom Assertion") + M.value(name) + M.choice("succeeded", "failed")
}
}
.withCode(name)
)
def assertionRec[A, B](name: String)(assertion: Assertion[B])(get: A => Option[B]): Assertion[A] =
Assertion(
TestArrow
.make[A, B] { a =>
get(a).fold[TestTrace[B]](
TestTrace.fail(M.text("Custom Assertion") + M.value(name) + M.choice("succeeded", "failed"))
) { b =>
TestTrace.succeed(b)
}
}
.withCode(name) >>> assertion.arrow
)
// TODO: Extend Syntax
// def assertion[A](expr: A => Boolean): Assertion[A]
// val hasLengthGreaterThan10 = assertion[String](_.length > 10)
// assertTrue(hasLengthGreaterThan10("hello"))
// # ASSERTIONS
/**
* Makes a new assertion that always succeeds.
*/
val anything: Assertion[Any] =
Assertion[Any] {
SmartAssertions.anything.withCode("anything")
}
def hasAt[A](pos: Int)(assertion: Assertion[A]): Assertion[Seq[A]] =
Assertion[Seq[A]](
SmartAssertions.hasAt(pos).withCode(s"hasAt($pos)") >>>
assertion.arrow
)
/**
* Makes a new assertion that requires a given numeric value to match a value
* with some tolerance.
*/
def approximatelyEquals[A: Numeric](reference: A, tolerance: A): Assertion[A] =
Assertion[A](
SmartAssertions.approximatelyEquals(reference, tolerance).withCode(s"approximatelyEquals($reference, $tolerance)")
)
/**
* Makes a new assertion that requires an Iterable contain the specified
* element. See [[Assertion.exists]] if you want to require an Iterable to
* contain an element satisfying an assertion.
*/
def contains[A](element: A): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
SmartAssertions.containsIterable(element).withCode(s"contains")
)
/**
* Makes a new assertion that requires a `Cause` contain the specified cause.
*/
def containsCause[E](cause: Cause[E]): Assertion[Cause[E]] =
Assertion[Cause[E]] {
SmartAssertions.containsCause(cause).withCode("containsCause")
}
/**
* Makes a new assertion that requires a substring to be present.
*/
def containsString(element: String): Assertion[String] =
Assertion[String](
SmartAssertions.containsString(element).withCode(s"containsString(${PrettyPrint(element)})")
)
/**
* Makes a new assertion that requires an exit value to die.
*/
def dies(assertion: Assertion[Throwable]): Assertion[Exit[Any, Any]] =
Assertion[Exit[Any, Any]](
SmartAssertions.asExitDie.withCode("dies") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an exit value to die with an instance
* of given type (or its subtype).
*/
def diesWithA[E: ClassTag]: Assertion[Exit[E, Any]] =
dies(isSubtype[E](anything))
/**
* Makes a new assertion that requires a given string to end with the
* specified suffix.
*/
def endsWith[A](suffix: Seq[A]): Assertion[Seq[A]] =
Assertion[Seq[A]](
SmartAssertions.endsWithSeq(suffix).withCode(s"endsWith")
)
/**
* Makes a new assertion that requires a given string to end with the
* specified suffix.
*/
def endsWithString(suffix: String): Assertion[String] =
Assertion[String](
SmartAssertions.endsWithString(suffix).withCode(s"endsWithString")
)
/**
* Makes a new assertion that requires a given string to equal another
* ignoring case.
*/
def equalsIgnoreCase(other: String): Assertion[String] =
Assertion[String](
TestArrow
.make[String, Boolean] { string =>
TestTrace.boolean(
string.equalsIgnoreCase(other)
) {
M.pretty(string) + M.equals + M.pretty(other) + "(ignoring case)"
}
}
.withCode(s"equalsIgnoreCase")
)
/**
* Makes a new assertion that focuses in on a field in a case class.
*
* {{{
* hasField("age", _.age, within(0, 10))
* }}}
*/
def hasField[A, B](name: String, proj: A => B, assertion: Assertion[B]): Assertion[A] =
Assertion {
SmartAssertions.hasField(name, proj).withCode(s"hasField") >>> assertion.arrow
}
/**
* Makes a new assertion that requires a Left value satisfying a specified
* assertion.
*/
def isLeft[A](assertion: Assertion[A]): Assertion[Either[A, Any]] =
Assertion[Either[A, Any]](
SmartAssertions.asLeft[A].withCode("isLeft") >>> assertion.arrow
)
/**
* Makes a new assertion that requires a Right value satisfying a specified
* assertion.
*/
def isRight[A](assertion: Assertion[A]): Assertion[Either[Any, A]] =
Assertion[Either[Any, A]](
SmartAssertions.asRight[A].withCode("isRight") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Either is Right.
*/
val isRight: Assertion[Either[Any, Any]] =
isRight(anything)
/**
* Makes a new assertion that requires an Either is Left.
*/
val isLeft: Assertion[Either[Any, Any]] =
isLeft(anything)
/**
* Makes a new assertion that requires a Some value satisfying the specified
* assertion.
*/
def isSome[A](assertion: Assertion[A]): Assertion[Option[A]] =
Assertion[Option[A]](
SmartAssertions.isSome.withCode("isSome") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Option is Some.
*/
val isSome: Assertion[Option[Any]] =
isSome(anything)
/**
* Makes a new assertion that requires an Iterable is sorted.
*/
def isSorted[A](implicit ord: Ordering[A]): Assertion[Iterable[A]] = {
@scala.annotation.tailrec
def loop(iterator: Iterator[A]): Boolean = iterator.hasNext match {
case false => true
case true =>
val x = iterator.next()
if (iterator.hasNext) {
val y = iterator.next()
if (ord.lteq(x, y)) loop(Iterator(y) ++ iterator) else false
} else {
true
}
}
Assertion[Iterable[A]](
TestArrow
.make[Iterable[A], Boolean] { iterable =>
TestTrace.boolean(
loop(iterable.iterator)
) {
M.pretty(iterable) + M.was + "sorted"
}
}
.withCode("isSorted")
)
}
/**
* Makes a new assertion that requires an Iterable is sorted in reverse order.
*/
def isSortedReverse[A](implicit ord: Ordering[A]): Assertion[Iterable[A]] =
isSorted(ord.reverse).withCode("isSortedReverse")
/**
* Makes a new assertion that requires a value have the specified type.
*
* Example:
* {{{
* assert(Duration.fromNanos(1))(isSubtype[Duration.Finite](Assertion.anything))
* }}}
*/
def isSubtype[A](assertion: Assertion[A])(implicit C: ClassTag[A]): Assertion[Any] =
Assertion[Any](
SmartAssertions.as[Any, A].withCode(s"isSubtype") >>> assertion.arrow
)
/**
* Makes a new assertion that requires a value be true.
*/
def isTrue: Assertion[Boolean] =
Assertion {
TestArrow
.make[Boolean, Boolean] { boolean =>
TestTrace.boolean(boolean)(M.value(boolean) + M.was + M.value(true))
}
.withCode("isTrue")
}
/**
* Makes a new assertion that requires a value be false.
*/
def isFalse: Assertion[Boolean] =
Assertion {
TestArrow
.make[Boolean, Boolean] { boolean =>
TestTrace.boolean(!boolean)(M.value(boolean) + M.was + M.value(false))
}
.withCode("isFalse")
}
/**
* Makes a new assertion that requires a Failure value satisfying the
* specified assertion.
*/
def isFailure(assertion: Assertion[Throwable]): Assertion[Try[Any]] =
Assertion[Try[Any]](
TestArrow
.make[Try[Any], Throwable] { tryValue =>
TestTrace.option(tryValue.failed.toOption) {
M.pretty(tryValue) + M.was + "a Failure"
}
}
.withCode("isFailure") >>> assertion.arrow
)
/**
* Makes a new assertion that requires a Try value is Failure.
*/
val isFailure: Assertion[Try[Any]] =
isFailure(anything)
/**
* Makes a new assertion that requires a Success value satisfying the
* specified assertion.
*/
def isSuccess[A](assertion: Assertion[A]): Assertion[Try[A]] =
Assertion[Try[A]](
TestArrow
.make[Try[A], A] { tryValue =>
TestTrace.option(tryValue.toOption) {
M.pretty(tryValue) + M.was + "a Success"
}
}
.withCode("isSuccess") >>> assertion.arrow
)
/**
* Makes a new assertion that requires a Try value is Success.
*/
val isSuccess: Assertion[Try[Any]] =
isSuccess(anything)
/**
* Makes a new assertion that requires a value to be equal to one of the
* specified values.
*/
def isOneOf[A](values: Iterable[A]): Assertion[A] =
Assertion {
TestArrow
.make[A, Boolean] { value =>
TestTrace.boolean(values.exists(_ == value)) {
M.value(value) + M.was + M.value(values)
}
}
.withCode("isOneOf")
}
/**
* Makes a new assertion that requires an exception to have a certain message.
*/
def hasMessage(message: Assertion[String]): Assertion[Throwable] =
Assertion[Throwable](
TestArrow
.make[Throwable, String] { throwable =>
Option(throwable.getMessage) match {
case Some(value) => TestTrace.succeed(value)
case None => TestTrace.fail(s"${throwable.getClass.getName} had no message")
}
}
.withCode("hasMessage") >>> message.arrow
)
/**
* Makes a new assertion that requires an exception to have certain suppressed
* exceptions.
*/
def hasSuppressed(cause: Assertion[Iterable[Throwable]]): Assertion[Throwable] =
Assertion[Throwable](
TestArrow
.fromFunction[Throwable, Iterable[Throwable]]((_: Throwable).getSuppressed)
.withCode("hasSuppressed") >>> cause.arrow
)
/**
* Makes a new assertion that requires an exception to have a certain cause.
*/
def hasThrowableCause(cause: Assertion[Throwable]): Assertion[Throwable] =
Assertion[Throwable](
TestArrow
.make[Throwable, Throwable] { throwable =>
Option(throwable.getCause) match {
case Some(value) => TestTrace.succeed(value)
case None => TestTrace.fail(s"${throwable.getClass.getName} had no cause")
}
}
.withCode("hasThrowableCause") >>> cause.arrow
)
/**
* Makes a new assertion that requires a None value.
*/
val isNone: Assertion[Option[Any]] =
Assertion {
SmartAssertions.isEmptyOption
.withCode("isNone")
}
/**
* Makes a new assertion that requires an Iterable to be non empty.
*/
val isNonEmpty: Assertion[Iterable[Any]] =
Assertion {
SmartAssertions.isNonEmptyIterable
.withCode("isNonEmpty")
}
/**
* Makes a new assertion that requires the value be unit.
*/
val isUnit: Assertion[Unit] =
Assertion[Unit](
TestArrow
.make[Unit, Boolean] { value =>
TestTrace.boolean(true)(M.value(value) + M.was + M.value("unit"))
}
.withCode("isUnit")
)
/**
* Makes a new assertion that requires the value be less than the specified
* reference value.
*/
def isLessThan[A](reference: A)(implicit ord: Ordering[A]): Assertion[A] =
Assertion[A](
SmartAssertions.lessThan(reference).withCode(s"isLessThan")
)
/**
* Makes a new assertion that requires the value be less than or equal to the
* specified reference value.
*/
def isLessThanEqualTo[A](reference: A)(implicit ord: Ordering[A]): Assertion[A] =
Assertion[A](
SmartAssertions.lessThanOrEqualTo(reference).withCode(s"isLessThanEqualTo")
)
/**
* Makes a new assertion that requires the value be greater than the specified
* reference value.
*/
def isGreaterThan[A](reference: A)(implicit ord: Ordering[A]): Assertion[A] =
Assertion[A](
SmartAssertions.greaterThan(reference).withCode(s"isGreaterThan")
)
/**
* Makes a new assertion that requires the value be greater than or equal to
* the specified reference value.
*/
def isGreaterThanEqualTo[A](reference: A)(implicit ord: Ordering[A]): Assertion[A] =
Assertion[A](
SmartAssertions.greaterThanOrEqualTo(reference).withCode(s"isGreaterThanEqualTo")
)
/**
* Makes a new assertion that requires a numeric value is negative.
*/
def isNegative[A](implicit num: Numeric[A]): Assertion[A] =
Assertion[A](
TestArrow
.make[A, Boolean] { value =>
TestTrace.boolean(num.lt(value, num.zero))(M.pretty(value) + M.was + M.value("negative"))
}
.withCode("isNegative")
)
/**
* Makes a new assertion that requires a numeric value is positive.
*/
def isPositive[A](implicit num: Numeric[A]): Assertion[A] =
Assertion[A](
TestArrow
.make[A, Boolean] { value =>
TestTrace.boolean(num.gt(value, num.zero))(M.pretty(value) + M.was + "positive")
}
.withCode("isPositive")
)
/**
* Makes a new assertion that requires an Iterable contain an element
* satisfying the given assertion. See [[Assertion.contains]] if you only need
* an Iterable to contain a given element.
*/
def exists[A](assertion: Assertion[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
SmartAssertions.existsIterable(assertion.arrow).withCode("exists")
)
/**
* Makes a new assertion that requires a value to fall within a specified min
* and max (inclusive).
*/
def isWithin[A](min: A, max: A)(implicit ord: Ordering[A]): Assertion[A] =
Assertion[A](
TestArrow
.make[A, Boolean] { value =>
TestTrace.boolean(ord.gteq(value, min) && ord.lteq(value, max))(
M.pretty(value) + M.was + "within" + M.pretty(min) + "and" + M.pretty(max)
)
}
.withCode("isWithin")
)
/**
* Makes a new assertion that requires an exit value to fail.
*/
def fails[E](assertion: Assertion[E]): Assertion[Exit[E, Any]] =
Assertion[Exit[E, Any]](
SmartAssertions.asExitFailure[E].withCode("fails") >>> assertion.arrow
)
/**
* Makes a new assertion that requires the expression to fail with an instance
* of given type (or its subtype).
*/
def failsWithA[E: ClassTag]: Assertion[Exit[E, Any]] =
fails(isSubtype[E](anything)).withCode("failsWithA")
/**
* Makes a new assertion that requires an exit value to fail with a cause that
* meets the specified assertion.
*/
def failsCause[E](assertion: Assertion[Cause[E]]): Assertion[Exit[E, Any]] =
Assertion[Exit[E, Any]](
SmartAssertions.asExitCause[E].withCode("failsCause") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable contain only elements
* satisfying the given assertion.
*/
def forall[A](assertion: Assertion[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
SmartAssertions.forallIterable(assertion.arrow).withCode("forall")
)
/**
* Makes a new assertion that requires an Iterable to have the same distinct
* elements as the other Iterable, though not necessarily in the same order.
*/
def hasSameElementsDistinct[A](other: Iterable[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
TestArrow
.make[Iterable[A], Boolean] { value =>
TestTrace.boolean(value.toSet == other.toSet)(
M.pretty(value) + M.had + "the same distinct elements as" + M.pretty(other)
)
}
.withCode(s"hasSameElementsDistinct")
)
/**
* Makes a new assertion that requires the size of an Iterable be satisfied by
* the specified assertion.
*/
def hasSize[A](assertion: Assertion[Int]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
TestArrow.fromFunction[Iterable[A], Int](_.size).withCode("hasSize") >>> assertion.arrow
)
/**
* Makes a new assertion that requires the size of a string be satisfied by
* the specified assertion.
*/
def hasSizeString(assertion: Assertion[Int]): Assertion[String] =
Assertion[String](
TestArrow.fromFunction[String, Int](_.length).withCode("hasSizeString") >>> assertion.arrow
)
/**
* Makes a new assertion that requires the intersection of two Iterables
* satisfy the given assertion.
*/
def hasIntersection[A](other: Iterable[A])(assertion: Assertion[Iterable[A]]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
TestArrow
.fromFunction[Iterable[A], Iterable[A]](value => value.toSeq.intersect(other.toSeq))
.withCode("hasIntersection") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable contain at least one of the
* specified elements.
*/
def hasAtLeastOneOf[A](other: Iterable[A]): Assertion[Iterable[A]] =
hasIntersection(other)(hasSize(isGreaterThanEqualTo(1))).withCode("hasAtLeastOneOf")
/**
* Makes a new assertion that requires an Iterable contain at most one of the
* specified elements.
*/
def hasAtMostOneOf[A](other: Iterable[A]): Assertion[Iterable[A]] =
hasIntersection(other)(hasSize(isLessThanEqualTo(1))).withCode("hasAtMostOneOf")
/**
* Makes a new assertion that requires an Iterable to contain the first
* element satisfying the given assertion.
*/
def hasFirst[A](assertion: Assertion[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
SmartAssertions.head.withCode("hasFirst") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable to contain the last element
* satisfying the given assertion.
*/
def hasLast[A](assertion: Assertion[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
SmartAssertions.last.withCode("hasLast") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable to be empty.
*/
val isEmpty: Assertion[Iterable[Any]] =
Assertion[Iterable[Any]](
SmartAssertions.isEmptyIterable.withCode("isEmpty")
)
/**
* Makes a new assertion that requires a given string to be empty.
*/
val isEmptyString: Assertion[String] =
Assertion[String](
SmartAssertions.isEmptyString.withCode("isEmptyString")
)
/**
* Makes a new assertion that requires a Map to have the specified key with
* value satisfying the specified assertion.
*/
def hasKey[K, V](key: K, assertion: Assertion[V]): Assertion[Map[K, V]] =
Assertion[Map[K, V]](
SmartAssertions.hasKey[K, V](key).withCode("hasKey") >>> assertion.arrow
)
/**
* Makes a new assertion that requires a Map to have the specified key.
*/
def hasKey[K, V](key: K): Assertion[Map[K, V]] =
hasKey(key, anything)
/**
* Makes a new assertion that requires a Map have keys satisfying the
* specified assertion.
*/
def hasKeys[K, V](assertion: Assertion[Iterable[K]]): Assertion[Map[K, V]] =
Assertion[Map[K, V]](
TestArrow.make[Map[K, V], Iterable[K]](map => TestTrace.succeed(map.keys)).withCode("hasKeys") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable contain none of the
* specified elements.
*/
def hasNoneOf[A](other: Iterable[A]): Assertion[Iterable[A]] =
hasIntersection(other)(isEmpty).withCode("hasNoneOf")
/**
* Makes a new assertion that requires an Iterable contain exactly one of the
* specified elements.
*/
def hasOneOf[A](other: Iterable[A]): Assertion[Iterable[A]] =
hasIntersection(other)(hasSize(equalTo(1))).withCode("hasOneOf")
/**
* Makes a new assertion that requires an Iterable to have the same elements
* as the specified Iterable, though not necessarily in the same order.
*/
def hasSameElements[A](other: Iterable[A]): Assertion[Iterable[A]] =
Assertion[Iterable[A]](
TestArrow
.make[Iterable[A], Boolean] { actual =>
val actualSeq = actual.toSeq
val otherSeq = other.toSeq
val result = actualSeq.diff(otherSeq).isEmpty && otherSeq.diff(actualSeq).isEmpty
TestTrace.boolean(result) {
M.pretty(actualSeq) + M.had + "the same elements as " + M.pretty(otherSeq)
}
}
.withCode("hasSameElements")
)
/**
* Makes a new assertion that requires the specified Iterable to be a subset
* of the other Iterable.
*/
def hasSubset[A](other: Iterable[A]): Assertion[Iterable[A]] =
hasIntersection(other)(hasSameElements(other)).withCode("hasSubset")
/**
* Makes a new assertion that requires a Map have values satisfying the
* specified assertion.
*/
def hasValues[K, V](assertion: Assertion[Iterable[V]]): Assertion[Map[K, V]] =
Assertion[Map[K, V]](
TestArrow.fromFunction((_: Map[K, V]).values).withCode("hasValues") >>> assertion.arrow
)
/**
* Makes a new assertion that requires the sum type be a specified term.
*
* {{{
* isCase("Some", Some.unapply, anything)
* }}}
*/
def isCase[Sum, Proj](
termName: String,
term: Sum => Option[Proj],
assertion: Assertion[Proj]
): Assertion[Sum] =
Assertion[Sum](
TestArrow
.make[Sum, Proj] { sum =>
TestTrace.option(term(sum)) {
M.pretty(sum) + M.was + "a case of " + termName
}
}
.withCode("isCase") >>> assertion.arrow
)
/**
* Makes a new assertion that requires an Iterable is distinct.
*/
val isDistinct: Assertion[Iterable[Any]] = {
@scala.annotation.tailrec
def loop(iterator: Iterator[Any], seen: Set[Any]): Boolean = iterator.hasNext match {
case false => true
case true =>
val x = iterator.next()
if (seen.contains(x)) false else loop(iterator, seen + x)
}
Assertion[Iterable[Any]](
TestArrow
.make[Iterable[Any], Boolean] { as =>
TestTrace.boolean(loop(as.iterator, Set.empty)) {
M.pretty(as) + M.was + "distinct"
}
}
.withCode("isDistinct")
)
}
/**
* Makes a new assertion that requires a given string to be non empty.
*/
val isNonEmptyString: Assertion[String] =
Assertion[String](
SmartAssertions.isNonEmptyString
.withCode("isNonEmptyString")
)
/**
* Makes a new assertion that requires a null value.
*/
val isNull: Assertion[Any] =
Assertion[Any](
TestArrow
.make[Any, Boolean] { x =>
TestTrace.boolean(x == null) {
M.pretty(x) + M.was + "null"
}
}
.withCode("isNull")
)
/**
* Makes a new assertion that requires a numeric value is zero.
*/
def isZero[A](implicit num: Numeric[A]): Assertion[A] =
Assertion[A](
TestArrow
.make[A, Boolean] { x =>
TestTrace.boolean(num.zero == x) {
M.pretty(x) + M.was + "zero"
}
}
.withCode("isZero")
)
/**
* Makes a new assertion that requires a given string to match the specified
* regular expression.
*/
def matchesRegex(regex: String): Assertion[String] =
Assertion[String](
TestArrow
.make[String, Boolean] { s =>
TestTrace.boolean(s.matches(regex)) {
M.pretty(s) + M.did + "match" + M.pretty(regex)
}
}
.withCode("matchesRegex")
)
/**
* Makes a new assertion that requires a numeric value is non negative.
*/
def nonNegative[A](implicit num: Numeric[A]): Assertion[A] =
isGreaterThanEqualTo(num.zero).withCode("nonNegative")
/**
* Makes a new assertion that requires a numeric value is non positive.
*/
def nonPositive[A](implicit num: Numeric[A]): Assertion[A] =
isLessThanEqualTo(num.zero).withCode("nonPositive")
/**
* Makes a new assertion that negates the specified assertion.
*/
def not[A](assertion: Assertion[A]): Assertion[A] =
assertion.negate
/**
* Makes a new assertion that always fails.
*/
val nothing: Assertion[Any] =
Assertion[Any](
TestArrow
.make[Any, Boolean] { input =>
TestTrace.succeed(false)
}
.withCode("nothing")
)
/**
* Makes a new assertion that requires a given sequence to start with the
* specified prefix.
*/
def startsWith[A](prefix: Seq[A]): Assertion[Seq[A]] =
Assertion[Seq[A]](
SmartAssertions
.startsWithSeq(prefix)
.withCode("startsWith")
)
/**
* Makes a new assertion that requires a given string to start with a
* specified prefix.
*/
def startsWithString(prefix: String): Assertion[String] =
Assertion[String](
SmartAssertions.startsWithString(prefix).withCode("startsWithString")
)
/**
* Makes a new assertion that requires an exit value to succeed.
*/
def succeeds[A](assertion: Assertion[A]): Assertion[Exit[Any, A]] =
Assertion {
SmartAssertions.asExitSuccess[Any, A].withCode("succeeds") >>> assertion.arrow
}
/**
* Makes a new assertion that requires the expression to throw.
*/
def throws[A](assertion: Assertion[Throwable]): Assertion[A] =
Assertion[A](
SmartAssertions.throws.withCode("throws") >>> assertion.arrow
)
/**
* Makes a new assertion that requires the expression to throw an instance of
* given type (or its subtype).
*/
def throwsA[E: ClassTag]: Assertion[Any] =
throws(isSubtype[E](anything))
/**
* Makes a new assertion that requires an exit value to be interrupted.
*/
def isInterrupted: Assertion[Exit[Any, Any]] =
Assertion[Exit[Any, Any]](
TestArrow
.make[Exit[Any, Any], Boolean] {
case Exit.Failure(cause) =>
TestTrace.boolean(cause.isInterrupted) {
M.value("Exit") + M.was + "interrupted"
}
case _ =>
TestTrace.fail {
M.value("Exit") + M.was + "interrupted"
}
}
.withCode("isInterrupted")
)
/**
* Makes a new assertion that requires an exit value to be interrupted.
*/
def isJustInterrupted: Assertion[Exit[Any, Any]] =
Assertion[Exit[Any, Any]](
TestArrow
.make[Exit[Any, Any], Boolean] {
case Exit.Failure(Cause.Interrupt(_, _)) =>
TestTrace.succeed(true)
case _ =>
TestTrace.fail {
M.value("Exit") + M.was + "just interrupted"
}
}
.withCode("isJustInterrupted")
)
}
