Call Validate on custom slice types. Fixes #133. (#134)

* Call Validate on custom slice types. Fixes #133. * Add changelog entry.

Author: blakerouse

CHANGELOG.md

@@ -13,6 +13,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Removed
 
 ### Fixed
+- Call Validate on custom slice types. #133
 
 ## [0.7.0]
 

reify.go

@@ -577,6 +577,11 @@ func reifyDoArray(
 return reflect.Value{}, raiseValidation(ctx, val.meta(), "", err)
 }
 
+if err := tryValidate(to); err != nil {
+ctx := val.Context()
+return reflect.Value{}, raiseValidation(ctx, val.meta(), "", err)
+}
+
 return to, nil
 }
 

validator_test.go

@@ -27,6 +27,7 @@ import (
 )
 
 type myNonzeroInt int
+type myCustomList []int
 
 type structValidator struct{ I int }
 type ptrStructValidator struct{ I int }
@@ -37,6 +38,13 @@ func (m myNonzeroInt) Validate() error {
 return testZeroErr(int(m))
 }
 
+func (l myCustomList) Validate() error {
+if len(l) == 0 {
+return errZeroTest
+}
+return nil
+}
+
 func (s structValidator) Validate() error {
 return testZeroErr(s.I)
 }
@@ -59,6 +67,7 @@ func TestValidationPass(t *testing.T) {
 "i": 5,
 "d": -10,
 "f": 3.14,
+"l": []int{0, 1},
 })
 
 tests := []interface{}{
@@ -163,6 +172,11 @@ func TestValidationPass(t *testing.T) {
 X time.Duration `config:"f" validate:"min=3, max=20"`
 }{},
 
+// validate field 'l'
+&struct {
+L myCustomList
+}{},
+
 // other
 &struct {
 X int // field not present in config, but not required
@@ -184,6 +198,7 @@ func TestValidationFail(t *testing.T) {
 "i": 0,
 "d": -10,
 "f": 3.14,
+"l": []int{},
 })
 
 tests := []interface{}{
@@ -261,6 +276,11 @@ func TestValidationFail(t *testing.T) {
 X time.Duration `config:"f" validate:"min=20s"`
 }{},
 
+// test field 'l'
+&struct {
+X myCustomList `config:"l"`
+}{},
+
 // other
 &struct {
 X int `validate:"required"`