Update gomega godeps to include gstruct

vendor/github.com/onsi/gomega/gstruct/fields.go

@@ -0,0 +1,141 @@
+package gstruct
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"runtime/debug"
+	"strings"
+
+	"github.com/onsi/gomega/format"
+	errorsutil "github.com/onsi/gomega/gstruct/errors"
+	"github.com/onsi/gomega/types"
+)
+
+//MatchAllFields succeeds if every field of a struct matches the field matcher associated with
+//it, and every element matcher is matched.
+//  Expect([]string{"a", "b"}).To(MatchAllFields(idFn, gstruct.Fields{
+//      "a": BeEqual("a"),
+//      "b": BeEqual("b"),
+//  })
+func MatchAllFields(fields Fields) types.GomegaMatcher {
+	return &FieldsMatcher{
+		Fields: fields,
+	}
+}
+
+//MatchFields succeeds if each element of a struct matches the field matcher associated with
+//it. It can ignore extra fields and/or missing fields.
+//  Expect([]string{"a", "c"}).To(MatchFields(idFn, IgnoreMissing|IgnoreExtra, gstruct.Fields{
+//      "a": BeEqual("a")
+//      "b": BeEqual("b"),
+//  })
+func MatchFields(options Options, fields Fields) types.GomegaMatcher {
+	return &FieldsMatcher{
+		Fields:        fields,
+		IgnoreExtras:  options&IgnoreExtras != 0,
+		IgnoreMissing: options&IgnoreMissing != 0,
+	}
+}
+
+type FieldsMatcher struct {
+	// Matchers for each field.
+	Fields Fields
+
+	// Whether to ignore extra elements or consider it an error.
+	IgnoreExtras bool
+	// Whether to ignore missing elements or consider it an error.
+	IgnoreMissing bool
+
+	// State.
+	failures []error
+}
+
+// Field name to matcher.
+type Fields map[string]types.GomegaMatcher
+
+func (m *FieldsMatcher) Match(actual interface{}) (success bool, err error) {
+	if reflect.TypeOf(actual).Kind() != reflect.Struct {
+		return false, fmt.Errorf("%v is type %T, expected struct", actual, actual)
+	}
+
+	m.failures = m.matchFields(actual)
+	if len(m.failures) > 0 {
+		return false, nil
+	}
+	return true, nil
+}
+
+func (m *FieldsMatcher) matchFields(actual interface{}) (errs []error) {
+	val := reflect.ValueOf(actual)
+	typ := val.Type()
+	fields := map[string]bool{}
+	for i := 0; i < val.NumField(); i++ {
+		fieldName := typ.Field(i).Name
+		fields[fieldName] = true
+
+		err := func() (err error) {
+			// This test relies heavily on reflect, which tends to panic.
+			// Recover here to provide more useful error messages in that case.
+			defer func() {
+				if r := recover(); r != nil {
+					err = fmt.Errorf("panic checking %+v: %v\n%s", actual, r, debug.Stack())
+				}
+			}()
+
+			matcher, expected := m.Fields[fieldName]
+			if !expected {
+				if !m.IgnoreExtras {
+					return fmt.Errorf("unexpected field %s: %+v", fieldName, actual)
+				}
+				return nil
+			}
+
+			var field interface{}
+			if val.Field(i).IsValid() {
+				field = val.Field(i).Interface()
+			} else {
+				field = reflect.Zero(typ.Field(i).Type)
+			}
+
+			match, err := matcher.Match(field)
+			if err != nil {
+				return err
+			} else if !match {
+				if nesting, ok := matcher.(errorsutil.NestingMatcher); ok {
+					return errorsutil.AggregateError(nesting.Failures())
+				}
+				return errors.New(matcher.FailureMessage(field))
+			}
+			return nil
+		}()
+		if err != nil {
+			errs = append(errs, errorsutil.Nest("."+fieldName, err))
+		}
+	}
+
+	for field := range m.Fields {
+		if !fields[field] && !m.IgnoreMissing {
+			errs = append(errs, fmt.Errorf("missing expected field %s", field))
+		}
+	}
+
+	return errs
+}
+
+func (m *FieldsMatcher) FailureMessage(actual interface{}) (message string) {
+	failures := make([]string, len(m.failures))
+	for i := range m.failures {
+		failures[i] = m.failures[i].Error()
+	}
+	return format.Message(reflect.TypeOf(actual).Name(),
+		fmt.Sprintf("to match fields: {\n%v\n}\n", strings.Join(failures, "\n")))
+}
+
+func (m *FieldsMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+	return format.Message(actual, "not to match fields")
+}
+
+func (m *FieldsMatcher) Failures() []error {
+	return m.failures
+}