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test.go
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test.go
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// Package test contains functions to help validate assumptions and can cause
// template generation to fail in specific cases
package test
import (
"github.com/pkg/errors"
// "reflect"
)
// Assert -
func Assert(value bool, message string) (string, error) {
if !value {
if message != "" {
return "", errors.Errorf("assertion failed: %s", message)
}
return "", errors.New("assertion failed")
}
return "", nil
}
// Fail -
func Fail(message string) error {
if message != "" {
return errors.Errorf("template generation failed: %s", message)
}
return errors.New("template generation failed")
}
// Required -
func Required(message string, value interface{}) (interface{}, error) {
if message == "" {
message = "can not render template: a required value was not set"
}
if s, ok := value.(string); value == nil || (ok && s == "") {
return nil, errors.New(message)
}
return value, nil
}