Gen

concat

Returns a new [Gen] which will return the values from this gen and only once values of this gen exhaust it will return the values from the supplied gen. The supplied gen must be a subtype of the type of this gen.

constants

Returns the values that should always be used if this generator is to give complete coverage.

filter

Create a new Gen by filtering the output of this gen.

filterNot

flatMap

Create a new Gen by mapping the output of this gen.

map

Create a new Gen by mapping the output of this gen.

merge

Returns a new [Gen] which will return the values from this gen and the values of the supplied gen together. The supplied gen must be a subtype of the type of this gen.

orNull

Create a new Gen which will return the values of this gen plus null.

random

Generate a random sequence of type T, that is compatible with the constraints of this generator.

shrinker

assertAll

assertNone

filterIsInstance

Create a new Gen by keeping only instances of U generated by this gen. This is useful if you have a type hierarchy and only want to retain a particular subtype.

forAll

forNone

next

Draws a random value from this generator

take

Draws amount values from this generator

uniqueRandoms

Creates a sequence of unique values from the contents of random, using seed to seed the random function.

verifyAll

verifyNone

bigInteger

bind

bool

Returns both boolean values

byte

Returns a stream of values where each value is a randomly chosen Byte. The values always returned include the following edge cases: [Byte.MIN_VALUE, Byte.MAX_VALUE, 0]

char

Returns a stream of randomly-chosen Chars. Custom characters can be generated by providing CharRanges. Distribution will be even across the ranges of Chars. For example: Gen.char('A'..'C', 'D'..'E') Ths will choose A, B, C, D, and E each 20% of the time.

Returns a stream of randomly-chosen Chars. Custom characters can be generated by providing a list of CharRanges. Distribution will be even across the ranges of Chars. For example: Gen.char(listOf('A'..'C', 'D'..'E') Ths will choose A, B, C, D, and E each 20% of the time.

choose

Returns a stream of values, where each value is a random Int between the given min and max.

Returns a stream of values, where each value is a Long between the given min and max.

Returns a stream of values based on weights:

constant

Returns a [Gen] which always returns the same value.

create

Returns a stream of values, where each value is generated from the given function

default

double

Returns a stream of values where each value is a randomly chosen Double.

duration

Generates a stream of random Durations

enum

factors

file

Returns a stream of values where each value is a randomly chosen created File object. The file objects do not necessarily exist on disk.

Returns a stream of values where each value is a randomly chosen File object from given directory. If the Directory does not exist, an empty sequence will be returned instead. If recursive is true(default value is false) it gives files from inner directories as well recursively.

float

Returns a stream of values where each value is a randomly chosen Float.

forClassName

from

Adapts a list into a generator, where random values will be picked. May not choose every item in the list.

int

Returns a stream of values where each value is a randomly chosen Int. The values always returned include the following edge cases: [Int.MIN_VALUE, Int.MAX_VALUE, 0, 1, -1]

list

Returns a stream of values, where each value is a list of values generated by the underlying generator.

localDate

Generates a stream of random LocalDates

localDateTime

Generates a stream of random LocalDateTimes

localTime

Generates a stream of random LocalTimes

long

Returns a stream of values where each value is a randomly chosen long. The values returned always include the following edge cases: [Long.MIN_VALUE, Long.MAX_VALUE, 0, 1, -1]

map

Returns a stream of values, where each value is a Map, which contains keys and values generated from the underlying generators.

multiples

nats

Returns a stream of values where each value is a randomly chosen natural number. The values returned always include the following edge cases: Int.MAX_VALUE

negativeDoubles

negativeIntegers

Returns a stream of values where each value is a randomly chosen negative value. The values returned always include the following edge cases: Int.MIN_VALUE

numericDoubles

Returns a Gen which is the same as Gen.double but does not include +INFINITY, -INFINITY or NaN.

numericFloats

Returns a Gen which is the same as Gen.float but does not include +INFINITY, -INFINITY or NaN.

oneOf

pair

Returns a stream of values, where each value is a pair generated by the underlying generators.

period

Generates a stream of random Periods

positiveDoubles

positiveIntegers

Returns a stream of values where each value is a randomly chosen positive value. The values returned always include the following edge cases: Int.MAX_VALUE

regex

samples

Returns a Gen which returns the sample values in the same order as they are passed in, once all sample values are used it repeats elements from start.

set

Returns a stream of values, where each value is a set of values generated by the given generator.

short

Returns a stream of values where each value is a randomly chosen Short. The values always returned include the following edge cases: [Short.MIN_VALUE, Short.MAX_VALUE, 0]

string

Returns a stream of values where each value is a random printed string.

triple

Returns a [Gen] where each value is a [Triple] generated by a value from each of three supplied generators.

ubyte

Returns a stream of values where each value is a randomly chosen UByte. The values always returned include the following edge cases: [UByte.MIN_VALUE, UByte.MAX_VALUE]

uint

Returns a stream of values where each value is a randomly chosen UInt. The values always returned include the following edge cases: [UInt.MIN_VALUE, UInt.MAX_VALUE]

ulong

Returns a stream of values where each value is a randomly chosen ULong. The values returned always include the following edge cases: [ULong.MIN_VALUE, ULong.MAX_VALUE]

ushort

Returns a stream of values where each value is a randomly chosen UShort. The values always returned include the following edge cases: [UShort.MIN_VALUE, UShort.MAX_VALUE]

uuid

BigIntegerGen

RegexpGen