package testing

import "github.com/IBM/fp-go/internal/functor/testing"

Index

Functions

func AssertComposition 

func AssertComposition[HKTA, HKTB, HKTC, A, B, C any](
	t *testing.T,

	eq E.Eq[HKTC],

	fab func(HKTA, func(A) B) HKTB,
	fac func(HKTA, func(A) C) HKTC,
	fbc func(HKTB, func(B) C) HKTC,
	ab func(A) B,
	bc func(B) C,
) func(fa HKTA) bool

Functor composition law

F.map(fa, a => bc(ab(a))) <-> F.map(F.map(fa, ab), bc)

Deprecated: use FunctorAssertComposition instead

func AssertIdentity 

func AssertIdentity[HKTA, A any](t *testing.T, eq E.Eq[HKTA], fmap func(HKTA, func(A) A) HKTA) func(fa HKTA) bool

Functor identity law

F.map(fa, a => a) <-> fa

Deprecated: use FunctorAssertIdentity

func AssertLaws 

func AssertLaws[HKTA, HKTB, HKTC, A, B, C any](t *testing.T,
	eqa E.Eq[HKTA],
	eqc E.Eq[HKTC],

	faa func(HKTA, func(A) A) HKTA,
	fab func(HKTA, func(A) B) HKTB,
	fac func(HKTA, func(A) C) HKTC,
	fbc func(HKTB, func(B) C) HKTC,

	ab func(A) B,
	bc func(B) C,
) func(fa HKTA) bool

AssertLaws asserts the functor laws `identity` and `composition`

Deprecated: use FunctorAssertLaws instead

func FunctorAssertComposition 

func FunctorAssertComposition[HKTA, HKTB, HKTC, A, B, C any](
	t *testing.T,

	eq E.Eq[HKTC],

	fab functor.Functor[A, B, HKTA, HKTB],
	fac functor.Functor[A, C, HKTA, HKTC],
	fbc functor.Functor[B, C, HKTB, HKTC],

	ab func(A) B,
	bc func(B) C,
) func(fa HKTA) bool

Functor composition law

F.map(fa, a => bc(ab(a))) <-> F.map(F.map(fa, ab), bc)

func FunctorAssertIdentity 

func FunctorAssertIdentity[HKTA, A any](
	t *testing.T,
	eq E.Eq[HKTA],

	fca functor.Functor[A, A, HKTA, HKTA],
) func(fa HKTA) bool

Functor identity law

F.map(fa, a => a) <-> fa

func FunctorAssertLaws 

func FunctorAssertLaws[HKTA, HKTB, HKTC, A, B, C any](t *testing.T,
	eqa E.Eq[HKTA],
	eqc E.Eq[HKTC],

	faa functor.Functor[A, A, HKTA, HKTA],
	fab functor.Functor[A, B, HKTA, HKTB],
	fac functor.Functor[A, C, HKTA, HKTC],
	fbc functor.Functor[B, C, HKTB, HKTC],

	ab func(A) B,
	bc func(B) C,
) func(fa HKTA) bool

FunctorAssertLaws asserts the functor laws `identity` and `composition`

Source Files

laws.go

Version
v1.0.151 (latest)
Published
Nov 23, 2024
Platform
linux/amd64
Imports
5 packages
Last checked
5 months ago –

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