forked from gitea/gitea
106 lines
4.0 KiB
Go
106 lines
4.0 KiB
Go
// Package assertions contains the implementations for all assertions which
|
|
// are referenced in goconvey's `convey` package
|
|
// (github.com/smartystreets/goconvey/convey) and gunit (github.com/smartystreets/gunit)
|
|
// for use with the So(...) method.
|
|
// They can also be used in traditional Go test functions and even in
|
|
// applications.
|
|
//
|
|
// Many of the assertions lean heavily on work done by Aaron Jacobs in his excellent oglematchers library.
|
|
// (https://github.com/jacobsa/oglematchers)
|
|
// The ShouldResemble assertion leans heavily on work done by Daniel Jacques in his very helpful go-render library.
|
|
// (https://github.com/luci/go-render)
|
|
package assertions
|
|
|
|
import (
|
|
"fmt"
|
|
"runtime"
|
|
)
|
|
|
|
// By default we use a no-op serializer. The actual Serializer provides a JSON
|
|
// representation of failure results on selected assertions so the goconvey
|
|
// web UI can display a convenient diff.
|
|
var serializer Serializer = new(noopSerializer)
|
|
|
|
// GoConveyMode provides control over JSON serialization of failures. When
|
|
// using the assertions in this package from the convey package JSON results
|
|
// are very helpful and can be rendered in a DIFF view. In that case, this function
|
|
// will be called with a true value to enable the JSON serialization. By default,
|
|
// the assertions in this package will not serializer a JSON result, making
|
|
// standalone ussage more convenient.
|
|
func GoConveyMode(yes bool) {
|
|
if yes {
|
|
serializer = newSerializer()
|
|
} else {
|
|
serializer = new(noopSerializer)
|
|
}
|
|
}
|
|
|
|
type testingT interface {
|
|
Error(args ...interface{})
|
|
}
|
|
|
|
type Assertion struct {
|
|
t testingT
|
|
failed bool
|
|
}
|
|
|
|
// New swallows the *testing.T struct and prints failed assertions using t.Error.
|
|
// Example: assertions.New(t).So(1, should.Equal, 1)
|
|
func New(t testingT) *Assertion {
|
|
return &Assertion{t: t}
|
|
}
|
|
|
|
// Failed reports whether any calls to So (on this Assertion instance) have failed.
|
|
func (this *Assertion) Failed() bool {
|
|
return this.failed
|
|
}
|
|
|
|
// So calls the standalone So function and additionally, calls t.Error in failure scenarios.
|
|
func (this *Assertion) So(actual interface{}, assert assertion, expected ...interface{}) bool {
|
|
ok, result := So(actual, assert, expected...)
|
|
if !ok {
|
|
this.failed = true
|
|
_, file, line, _ := runtime.Caller(1)
|
|
this.t.Error(fmt.Sprintf("\n%s:%d\n%s", file, line, result))
|
|
}
|
|
return ok
|
|
}
|
|
|
|
// So is a convenience function (as opposed to an inconvenience function?)
|
|
// for running assertions on arbitrary arguments in any context, be it for testing or even
|
|
// application logging. It allows you to perform assertion-like behavior (and get nicely
|
|
// formatted messages detailing discrepancies) but without the program blowing up or panicking.
|
|
// All that is required is to import this package and call `So` with one of the assertions
|
|
// exported by this package as the second parameter.
|
|
// The first return parameter is a boolean indicating if the assertion was true. The second
|
|
// return parameter is the well-formatted message showing why an assertion was incorrect, or
|
|
// blank if the assertion was correct.
|
|
//
|
|
// Example:
|
|
//
|
|
// if ok, message := So(x, ShouldBeGreaterThan, y); !ok {
|
|
// log.Println(message)
|
|
// }
|
|
//
|
|
func So(actual interface{}, assert assertion, expected ...interface{}) (bool, string) {
|
|
if result := so(actual, assert, expected...); len(result) == 0 {
|
|
return true, result
|
|
} else {
|
|
return false, result
|
|
}
|
|
}
|
|
|
|
// so is like So, except that it only returns the string message, which is blank if the
|
|
// assertion passed. Used to facilitate testing.
|
|
func so(actual interface{}, assert func(interface{}, ...interface{}) string, expected ...interface{}) string {
|
|
return assert(actual, expected...)
|
|
}
|
|
|
|
// assertion is an alias for a function with a signature that the So()
|
|
// function can handle. Any future or custom assertions should conform to this
|
|
// method signature. The return value should be an empty string if the assertion
|
|
// passes and a well-formed failure message if not.
|
|
type assertion func(actual interface{}, expected ...interface{}) string
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|