hugo/tpl/cast/cast_test.go
Lucas Jenss 57adc539fc tpl: Add float template function
Add a template function that allows conversion to float. This is
useful, for example, when passing aspect ratios into templates,
which tend to not be integers.

Fixes #3307
2017-09-28 16:53:18 +02:00

120 lines
2.5 KiB
Go

// Copyright 2017 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cast
import (
"fmt"
"html/template"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestToInt(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
v interface{}
expect interface{}
}{
{"1", 1},
{template.HTML("2"), 2},
{template.CSS("3"), 3},
{template.HTMLAttr("4"), 4},
{template.JS("5"), 5},
{template.JSStr("6"), 6},
{"a", false},
{t, false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test.v)
result, err := ns.ToInt(test.v)
if b, ok := test.expect.(bool); ok && !b {
require.Error(t, err, errMsg)
continue
}
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
}
}
func TestToString(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
v interface{}
expect interface{}
}{
{1, "1"},
{template.HTML("2"), "2"},
{"a", "a"},
{t, false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test.v)
result, err := ns.ToString(test.v)
if b, ok := test.expect.(bool); ok && !b {
require.Error(t, err, errMsg)
continue
}
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
}
}
func TestToFloat(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
v interface{}
expect interface{}
}{
{"1", 1.0},
{template.HTML("2"), 2.0},
{template.CSS("3"), 3.0},
{template.HTMLAttr("4"), 4.0},
{template.JS("-5.67"), -5.67},
{template.JSStr("6"), 6.0},
{"1.23", 1.23},
{"-1.23", -1.23},
{"0", 0.0},
{float64(2.12), 2.12},
{int64(123), 123.0},
{2, 2.0},
{t, false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test.v)
result, err := ns.ToFloat(test.v)
if b, ok := test.expect.(bool); ok && !b {
require.Error(t, err, errMsg)
continue
}
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
}
}