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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cldr
import (
"reflect"
"testing"
)
type testSlice []*Common
func mkElem(alt, typ, ref string) *Common {
return &Common{
Type: typ,
Reference: ref,
Alt: alt,
}
}
var (
testSlice1 = testSlice{
mkElem("1", "a", "i.a"),
mkElem("1", "b", "i.b"),
mkElem("1", "c", "i.c"),
mkElem("2", "b", "ii"),
mkElem("3", "c", "iii"),
mkElem("4", "a", "iv.a"),
mkElem("4", "d", "iv.d"),
}
testSliceE = testSlice{}
)
func panics(f func()) (panics bool) {
defer func() {
if err := recover(); err != nil {
panics = true
}
}()
f()
return panics
}
func TestMakeSlice(t *testing.T) {
foo := 1
bar := []int{}
tests := []struct {
i interface{}
panics bool
err string
}{
{&foo, true, "should panic when passed a pointer to the wrong type"},
{&bar, true, "should panic when slice element of the wrong type"},
{testSlice1, true, "should panic when passed a slice"},
{&testSlice1, false, "should not panic"},
}
for i, tt := range tests {
if panics(func() { MakeSlice(tt.i) }) != tt.panics {
t.Errorf("%d: %s", i, tt.err)
}
}
}
var anyOfTests = []struct {
sl testSlice
values []string
n int
}{
{testSliceE, []string{}, 0},
{testSliceE, []string{"1", "2", "3"}, 0},
{testSlice1, []string{}, 0},
{testSlice1, []string{"1"}, 3},
{testSlice1, []string{"2"}, 1},
{testSlice1, []string{"5"}, 0},
{testSlice1, []string{"1", "2", "3"}, 5},
}
func TestSelectAnyOf(t *testing.T) {
for i, tt := range anyOfTests {
sl := tt.sl
s := MakeSlice(&sl)
s.SelectAnyOf("alt", tt.values...)
if len(sl) != tt.n {
t.Errorf("%d: found len == %d; want %d", i, len(sl), tt.n)
}
}
sl := testSlice1
s := MakeSlice(&sl)
if !panics(func() { s.SelectAnyOf("foo") }) {
t.Errorf("should panic on non-existing attribute")
}
}
func TestFilter(t *testing.T) {
for i, tt := range anyOfTests {
sl := tt.sl
s := MakeSlice(&sl)
s.Filter(func(e Elem) bool {
v, _ := findField(reflect.ValueOf(e), "alt")
return in(tt.values, v.String())
})
if len(sl) != tt.n {
t.Errorf("%d: found len == %d; want %d", i, len(sl), tt.n)
}
}
}
func TestGroup(t *testing.T) {
f := func(excl ...string) func(Elem) string {
return func(e Elem) string {
return Key(e, excl...)
}
}
tests := []struct {
sl testSlice
f func(Elem) string
lens []int
}{
{testSliceE, f(), []int{}},
{testSlice1, f(), []int{1, 1, 1, 1, 1, 1, 1}},
{testSlice1, f("type"), []int{3, 1, 1, 2}},
{testSlice1, f("alt"), []int{2, 2, 2, 1}},
{testSlice1, f("alt", "type"), []int{7}},
{testSlice1, f("alt", "type"), []int{7}},
}
for i, tt := range tests {
sl := tt.sl
s := MakeSlice(&sl)
g := s.Group(tt.f)
if len(tt.lens) != len(g) {
t.Errorf("%d: found %d; want %d", i, len(g), len(tt.lens))
continue
}
for j, v := range tt.lens {
if n := g[j].Value().Len(); n != v {
t.Errorf("%d: found %d for length of group %d; want %d", i, n, j, v)
}
}
}
}
func TestSelectOnePerGroup(t *testing.T) {
tests := []struct {
sl testSlice
attr string
values []string
refs []string
}{
{testSliceE, "alt", []string{"1"}, []string{}},
{testSliceE, "type", []string{"a"}, []string{}},
{testSlice1, "alt", []string{"2", "3", "1"}, []string{"i.a", "ii", "iii"}},
{testSlice1, "alt", []string{"1", "4"}, []string{"i.a", "i.b", "i.c", "iv.d"}},
{testSlice1, "type", []string{"c", "d"}, []string{"i.c", "iii", "iv.d"}},
}
for i, tt := range tests {
sl := tt.sl
s := MakeSlice(&sl)
s.SelectOnePerGroup(tt.attr, tt.values)
if len(sl) != len(tt.refs) {
t.Errorf("%d: found result length %d; want %d", i, len(sl), len(tt.refs))
continue
}
for j, e := range sl {
if tt.refs[j] != e.Reference {
t.Errorf("%d:%d found %s; want %s", i, j, e.Reference, tt.refs[i])
}
}
}
sl := testSlice1
s := MakeSlice(&sl)
if !panics(func() { s.SelectOnePerGroup("foo", nil) }) {
t.Errorf("should panic on non-existing attribute")
}
}
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