Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

vendor/github.com/gin-gonic/gin/binding/default_validator.go

@@ -0,0 +1,97 @@
+// Copyright 2017 Manu Martinez-Almeida.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package binding
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+	"sync"
+
+	"github.com/go-playground/validator/v10"
+)
+
+type defaultValidator struct {
+	once     sync.Once
+	validate *validator.Validate
+}
+
+type sliceValidateError []error
+
+// Error concatenates all error elements in sliceValidateError into a single string separated by \n.
+func (err sliceValidateError) Error() string {
+	n := len(err)
+	switch n {
+	case 0:
+		return ""
+	default:
+		var b strings.Builder
+		if err[0] != nil {
+			fmt.Fprintf(&b, "[%d]: %s", 0, err[0].Error())
+		}
+		if n > 1 {
+			for i := 1; i < n; i++ {
+				if err[i] != nil {
+					b.WriteString("\n")
+					fmt.Fprintf(&b, "[%d]: %s", i, err[i].Error())
+				}
+			}
+		}
+		return b.String()
+	}
+}
+
+var _ StructValidator = &defaultValidator{}
+
+// ValidateStruct receives any kind of type, but only performed struct or pointer to struct type.
+func (v *defaultValidator) ValidateStruct(obj interface{}) error {
+	if obj == nil {
+		return nil
+	}
+
+	value := reflect.ValueOf(obj)
+	switch value.Kind() {
+	case reflect.Ptr:
+		return v.ValidateStruct(value.Elem().Interface())
+	case reflect.Struct:
+		return v.validateStruct(obj)
+	case reflect.Slice, reflect.Array:
+		count := value.Len()
+		validateRet := make(sliceValidateError, 0)
+		for i := 0; i < count; i++ {
+			if err := v.ValidateStruct(value.Index(i).Interface()); err != nil {
+				validateRet = append(validateRet, err)
+			}
+		}
+		if len(validateRet) == 0 {
+			return nil
+		}
+		return validateRet
+	default:
+		return nil
+	}
+}
+
+// validateStruct receives struct type
+func (v *defaultValidator) validateStruct(obj interface{}) error {
+	v.lazyinit()
+	return v.validate.Struct(obj)
+}
+
+// Engine returns the underlying validator engine which powers the default
+// Validator instance. This is useful if you want to register custom validations
+// or struct level validations. See validator GoDoc for more info -
+// https://pkg.go.dev/github.com/go-playground/validator/v10
+func (v *defaultValidator) Engine() interface{} {
+	v.lazyinit()
+	return v.validate
+}
+
+func (v *defaultValidator) lazyinit() {
+	v.once.Do(func() {
+		v.validate = validator.New()
+		v.validate.SetTagName("binding")
+	})
+}