predicate

package

v0.6.0 Latest Latest Go to latest Published: Jun 26, 2021 License: BSD-3-Clause Imports: 1 Imported by: 0

Details

Valid go.mod file
Redistributable license
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Stable version
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Repository

github.com/maargenton/go-testpredicate

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Documentation ¶

Overview ¶

Package predicate defines the interface between the asserter and specific predicates implementation

Index ¶

func WrapError(nestedErr error, format string, a ...interface{}) error
type Func
type Result
type T
- func Make(description string, fn Func) T
- func MakeBool(description string, fn func(value interface{}) (bool, error)) T

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func WrapError ¶

func WrapError(nestedErr error, format string, a ...interface{}) error

WrapError appends the nested error after the formated message, on a new line

Types ¶

type Func ¶

type Func func(value interface{}) (Result, error)

Func is a the funcPredicate type that implements a predicate

type Result ¶

type Result int8

Result that can be either failed, passed or invalid

const (
	// Invalid is the result of a predicate that could not be evaluated
	// and whom result is undetermined
	Invalid Result = iota

	// Failed is the result of a predicate evaluated successfully
	// yielding a negative result
	Failed

	// Passed is the result of a predicate evaluated successfully
	// yielding a positive result
	Passed
)

func (Result) String ¶

func (r Result) String() string

func (Result) Success ¶

func (r Result) Success() bool

Success is true for valid and positive results

func (Result) Valid ¶

func (r Result) Valid() bool

Valid is true for successful evaluation yielding either positive or negative result

type T ¶

type T interface {
	fmt.Stringer
	Evaluate(v interface{}) (Result, error)
}

T defines the minimum interface that predicates must implement

func Make ¶

func Make(description string, fn Func) T

Make wraps a predicate funcPredicate into a predicate interface

func MakeBool ¶

func MakeBool(
	description string,
	fn func(value interface{}) (bool, error)) T

MakeBool wraps a predicate funcPredicate returning bool into a predicate interface. Any error returned from the funcPredicate is interpreted as an invalid evaluation.

Source Files ¶

View all Source files

predicate.go

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