generator

Documentation

Overview

Package generator provides pgtype specific value generators. Generation is driven by the pseudo-random number generator from `math/rand`. This allows for deterministic value generation, using a seed for each constructor. Note that this determinism is also affected by other parameters, such as a minimum or maximum value.

Each constructor also takes an argument for percentage of probability for a SQL null with each newly generated value. If the probability is 0 or lower, random null generation is disabled. Use this mode for columns with constraint NOT NULL. If the probability is 100 or higher, only nulls are generated.

Index

• type Value
  • func NewBool(seed int64, nullProbabilty, probabilty float32) Value

Types

type Value

type Value interface {
	pgtype.ValueTranscoder
	// NextValue populates the Value with a newly generated value.
	NextValue()
}

Value generates a pgtype value on each read access.

func NewBool

func NewBool(seed int64, nullProbabilty, probabilty float32) Value

NewBool returns a boolean value generator.

Probability is a percentage of chance `true` values are generated on each read. If probability is 0 or lower, only `false` values are generated. If probability is 100 or highter, only `true` values are generated.