mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-14 20:37:55 -05:00
02eaddc2fb
Before this commit, due to a bug in Go's `text/template` package, this would print different output for typed nil interface values:
```
{{ if .AuthenticatedUser }}User is authenticated!{{ else }}{{ end }}
{{ if not .AuthenticatedUser }}{{ else }}}User is authenticated!{{ end }}
```
This commit works around this by wrapping every `if` and `with` with a custom `getif` template func with truth logic that matches `not`, `and` and `or`.
Those 3 template funcs from Go's stdlib are now pulled into Hugo's source tree and adjusted to support custom zero values, e.g. types that implement `IsZero`.
This means that you can now do:
```
{{ with .Date }}{{ . }}{{ end }}
```
And it would work as expected.
Fixes #5738
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package compare
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import (
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"reflect"
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"testing"
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"time"
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"github.com/gohugoio/hugo/common/hreflect"
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"github.com/stretchr/testify/require"
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)
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func TestTruth(t *testing.T) {
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n := New()
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truthv, falsev := reflect.ValueOf(time.Now()), reflect.ValueOf(false)
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assertTruth := func(t *testing.T, v reflect.Value, expected bool) {
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if hreflect.IsTruthfulValue(v) != expected {
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t.Fatal("truth mismatch")
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}
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}
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t.Run("And", func(t *testing.T) {
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assertTruth(t, n.And(truthv, truthv), true)
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assertTruth(t, n.And(truthv, falsev), false)
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})
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t.Run("Or", func(t *testing.T) {
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assertTruth(t, n.Or(truthv, truthv), true)
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assertTruth(t, n.Or(falsev, truthv, falsev), true)
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assertTruth(t, n.Or(falsev, falsev), false)
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})
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t.Run("Not", func(t *testing.T) {
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assert := require.New(t)
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assert.True(n.Not(falsev))
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assert.False(n.Not(truthv))
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})
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t.Run("getIf", func(t *testing.T) {
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assert := require.New(t)
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assertTruth(t, n.getIf(reflect.ValueOf(nil)), false)
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s := reflect.ValueOf("Hugo")
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assert.Equal(s, n.getIf(s))
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})
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}
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