hugo/tpl/math/math_test.go

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// 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 math
import (
"fmt"
"math"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestBasicNSArithmetic(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
fn func(a, b interface{}) (interface{}, error)
a interface{}
b interface{}
expect interface{}
}{
{ns.Add, 4, 2, int64(6)},
{ns.Add, 1.0, "foo", false},
{ns.Sub, 4, 2, int64(2)},
{ns.Sub, 1.0, "foo", false},
{ns.Mul, 4, 2, int64(8)},
{ns.Mul, 1.0, "foo", false},
{ns.Div, 4, 2, int64(2)},
{ns.Div, 1.0, "foo", false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test)
result, err := test.fn(test.a, test.b)
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 TestDoArithmetic(t *testing.T) {
t.Parallel()
for i, test := range []struct {
a interface{}
b interface{}
op rune
expect interface{}
}{
{3, 2, '+', int64(5)},
{3, 2, '-', int64(1)},
{3, 2, '*', int64(6)},
{3, 2, '/', int64(1)},
{3.0, 2, '+', float64(5)},
{3.0, 2, '-', float64(1)},
{3.0, 2, '*', float64(6)},
{3.0, 2, '/', float64(1.5)},
{3, 2.0, '+', float64(5)},
{3, 2.0, '-', float64(1)},
{3, 2.0, '*', float64(6)},
{3, 2.0, '/', float64(1.5)},
{3.0, 2.0, '+', float64(5)},
{3.0, 2.0, '-', float64(1)},
{3.0, 2.0, '*', float64(6)},
{3.0, 2.0, '/', float64(1.5)},
{uint(3), uint(2), '+', uint64(5)},
{uint(3), uint(2), '-', uint64(1)},
{uint(3), uint(2), '*', uint64(6)},
{uint(3), uint(2), '/', uint64(1)},
{uint(3), 2, '+', uint64(5)},
{uint(3), 2, '-', uint64(1)},
{uint(3), 2, '*', uint64(6)},
{uint(3), 2, '/', uint64(1)},
{3, uint(2), '+', uint64(5)},
{3, uint(2), '-', uint64(1)},
{3, uint(2), '*', uint64(6)},
{3, uint(2), '/', uint64(1)},
{uint(3), -2, '+', int64(1)},
{uint(3), -2, '-', int64(5)},
{uint(3), -2, '*', int64(-6)},
{uint(3), -2, '/', int64(-1)},
{-3, uint(2), '+', int64(-1)},
{-3, uint(2), '-', int64(-5)},
{-3, uint(2), '*', int64(-6)},
{-3, uint(2), '/', int64(-1)},
{uint(3), 2.0, '+', float64(5)},
{uint(3), 2.0, '-', float64(1)},
{uint(3), 2.0, '*', float64(6)},
{uint(3), 2.0, '/', float64(1.5)},
{3.0, uint(2), '+', float64(5)},
{3.0, uint(2), '-', float64(1)},
{3.0, uint(2), '*', float64(6)},
{3.0, uint(2), '/', float64(1.5)},
{0, 0, '+', 0},
{0, 0, '-', 0},
{0, 0, '*', 0},
{"foo", "bar", '+', "foobar"},
{3, 0, '/', false},
{3.0, 0, '/', false},
{3, 0.0, '/', false},
{uint(3), uint(0), '/', false},
{3, uint(0), '/', false},
{-3, uint(0), '/', false},
{uint(3), 0, '/', false},
{3.0, uint(0), '/', false},
{uint(3), 0.0, '/', false},
{3, "foo", '+', false},
{3.0, "foo", '+', false},
{uint(3), "foo", '+', false},
{"foo", 3, '+', false},
{"foo", "bar", '-', false},
{3, 2, '%', false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test)
result, err := DoArithmetic(test.a, test.b, test.op)
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 TestLog(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
a interface{}
expect interface{}
}{
{1, float64(0)},
{3, float64(1.0986)},
{0, float64(math.Inf(-1))},
{1.0, float64(0)},
{3.1, float64(1.1314)},
{"abc", false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test)
result, err := ns.Log(test.a)
if b, ok := test.expect.(bool); ok && !b {
require.Error(t, err, errMsg)
continue
}
// we compare only 4 digits behind point if its a real float
// otherwise we usually get different float values on the last positions
if result != math.Inf(-1) {
result = float64(int(result*10000)) / 10000
}
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
}
}
func TestMod(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
a interface{}
b interface{}
expect interface{}
}{
{3, 2, int64(1)},
{3, 1, int64(0)},
{3, 0, false},
{0, 3, int64(0)},
{3.1, 2, false},
{3, 2.1, false},
{3.1, 2.1, false},
{int8(3), int8(2), int64(1)},
{int16(3), int16(2), int64(1)},
{int32(3), int32(2), int64(1)},
{int64(3), int64(2), int64(1)},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test)
result, err := ns.Mod(test.a, test.b)
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 TestModBool(t *testing.T) {
t.Parallel()
ns := New()
for i, test := range []struct {
a interface{}
b interface{}
expect interface{}
}{
{3, 3, true},
{3, 2, false},
{3, 1, true},
{3, 0, nil},
{0, 3, true},
{3.1, 2, nil},
{3, 2.1, nil},
{3.1, 2.1, nil},
{int8(3), int8(3), true},
{int8(3), int8(2), false},
{int16(3), int16(3), true},
{int16(3), int16(2), false},
{int32(3), int32(3), true},
{int32(3), int32(2), false},
{int64(3), int64(3), true},
{int64(3), int64(2), false},
} {
errMsg := fmt.Sprintf("[%d] %v", i, test)
result, err := ns.ModBool(test.a, test.b)
if test.expect == nil {
require.Error(t, err, errMsg)
continue
}
require.NoError(t, err, errMsg)
assert.Equal(t, test.expect, result, errMsg)
}
}