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Interface: IProperty<Ts>

Defined in: packages/fast-check/src/check/property/Property.generic.ts:30

Interface for synchronous property, see IRawProperty

Remarks

Since 1.19.0

Extends

Extended by

Type Parameters

Type Parameter
Ts

Properties

runAfterEach

runAfterEach: () => void

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:81

Run after each hook

Returns

void

Remarks

Since 3.4.0

Inherited from

IRawProperty.runAfterEach


runBeforeEach

runBeforeEach: () => void

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:75

Run before each hook

Returns

void

Remarks

Since 3.4.0

Inherited from

IRawProperty.runBeforeEach

Methods

generate()

generate(mrng, runId?): Value<Ts>

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:49

Generate values of type Ts

Parameters

ParameterTypeDescription
mrngRandomRandom number generator
runId?numberId of the generation, starting at 0 - if set the generation might be biased

Returns

Value<Ts>

Remarks

Since 0.0.7 (return type changed in 3.0.0)

Inherited from

IRawProperty.generate


isAsync()

isAsync(): false

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:39

Is the property asynchronous?

true in case of asynchronous property, false otherwise

Returns

false

Remarks

Since 0.0.7

Inherited from

IRawProperty.isAsync


run()

run(v): PreconditionFailure | PropertyFailure | null

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:65

Check the predicate for v

Parameters

ParameterTypeDescription
vTsValue of which we want to check the predicate

Returns

PreconditionFailure | PropertyFailure | null

Remarks

Since 0.0.7

Inherited from

IRawProperty.run


shrink()

shrink(value): Stream<Value<Ts>>

Defined in: packages/fast-check/src/check/property/IRawProperty.ts:58

Shrink value of type Ts

Parameters

ParameterTypeDescription
valueValue<Ts>The value to be shrunk, it can be context-less

Returns

Stream<Value<Ts>>

Remarks

Since 3.0.0

Inherited from

IRawProperty.shrink