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19c5910485
Ceil and Floor are frontends for the stdlib math functions. The Round implementation is essentially the same thing except that the Go stdlib doesn't include a Round implementation in a stable release yet. I've included the Round function slated for Go 1.10. Fixes #3883
357 lines
7.5 KiB
Go
357 lines
7.5 KiB
Go
// Copyright 2017 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 math
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import (
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"fmt"
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"math"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestBasicNSArithmetic(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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fn func(a, b interface{}) (interface{}, error)
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a interface{}
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b interface{}
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expect interface{}
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}{
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{ns.Add, 4, 2, int64(6)},
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{ns.Add, 1.0, "foo", false},
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{ns.Sub, 4, 2, int64(2)},
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{ns.Sub, 1.0, "foo", false},
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{ns.Mul, 4, 2, int64(8)},
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{ns.Mul, 1.0, "foo", false},
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{ns.Div, 4, 2, int64(2)},
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{ns.Div, 1.0, "foo", false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := test.fn(test.a, test.b)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestDoArithmetic(t *testing.T) {
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t.Parallel()
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for i, test := range []struct {
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a interface{}
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b interface{}
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op rune
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expect interface{}
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}{
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{3, 2, '+', int64(5)},
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{3, 2, '-', int64(1)},
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{3, 2, '*', int64(6)},
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{3, 2, '/', int64(1)},
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{3.0, 2, '+', float64(5)},
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{3.0, 2, '-', float64(1)},
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{3.0, 2, '*', float64(6)},
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{3.0, 2, '/', float64(1.5)},
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{3, 2.0, '+', float64(5)},
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{3, 2.0, '-', float64(1)},
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{3, 2.0, '*', float64(6)},
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{3, 2.0, '/', float64(1.5)},
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{3.0, 2.0, '+', float64(5)},
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{3.0, 2.0, '-', float64(1)},
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{3.0, 2.0, '*', float64(6)},
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{3.0, 2.0, '/', float64(1.5)},
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{uint(3), uint(2), '+', uint64(5)},
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{uint(3), uint(2), '-', uint64(1)},
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{uint(3), uint(2), '*', uint64(6)},
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{uint(3), uint(2), '/', uint64(1)},
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{uint(3), 2, '+', uint64(5)},
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{uint(3), 2, '-', uint64(1)},
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{uint(3), 2, '*', uint64(6)},
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{uint(3), 2, '/', uint64(1)},
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{3, uint(2), '+', uint64(5)},
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{3, uint(2), '-', uint64(1)},
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{3, uint(2), '*', uint64(6)},
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{3, uint(2), '/', uint64(1)},
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{uint(3), -2, '+', int64(1)},
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{uint(3), -2, '-', int64(5)},
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{uint(3), -2, '*', int64(-6)},
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{uint(3), -2, '/', int64(-1)},
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{-3, uint(2), '+', int64(-1)},
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{-3, uint(2), '-', int64(-5)},
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{-3, uint(2), '*', int64(-6)},
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{-3, uint(2), '/', int64(-1)},
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{uint(3), 2.0, '+', float64(5)},
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{uint(3), 2.0, '-', float64(1)},
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{uint(3), 2.0, '*', float64(6)},
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{uint(3), 2.0, '/', float64(1.5)},
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{3.0, uint(2), '+', float64(5)},
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{3.0, uint(2), '-', float64(1)},
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{3.0, uint(2), '*', float64(6)},
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{3.0, uint(2), '/', float64(1.5)},
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{0, 0, '+', 0},
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{0, 0, '-', 0},
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{0, 0, '*', 0},
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{"foo", "bar", '+', "foobar"},
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{3, 0, '/', false},
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{3.0, 0, '/', false},
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{3, 0.0, '/', false},
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{uint(3), uint(0), '/', false},
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{3, uint(0), '/', false},
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{-3, uint(0), '/', false},
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{uint(3), 0, '/', false},
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{3.0, uint(0), '/', false},
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{uint(3), 0.0, '/', false},
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{3, "foo", '+', false},
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{3.0, "foo", '+', false},
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{uint(3), "foo", '+', false},
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{"foo", 3, '+', false},
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{"foo", "bar", '-', false},
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{3, 2, '%', false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := DoArithmetic(test.a, test.b, test.op)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestCeil(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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x interface{}
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expect interface{}
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}{
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{0.1, 1.0},
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{0.5, 1.0},
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{1.1, 2.0},
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{1.5, 2.0},
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{-0.1, 0.0},
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{-0.5, 0.0},
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{-1.1, -1.0},
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{-1.5, -1.0},
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{"abc", false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.Ceil(test.x)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestFloor(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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x interface{}
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expect interface{}
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}{
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{0.1, 0.0},
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{0.5, 0.0},
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{1.1, 1.0},
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{1.5, 1.0},
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{-0.1, -1.0},
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{-0.5, -1.0},
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{-1.1, -2.0},
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{-1.5, -2.0},
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{"abc", false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.Floor(test.x)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestLog(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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a interface{}
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expect interface{}
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}{
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{1, float64(0)},
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{3, float64(1.0986)},
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{0, float64(math.Inf(-1))},
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{1.0, float64(0)},
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{3.1, float64(1.1314)},
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{"abc", false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.Log(test.a)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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// we compare only 4 digits behind point if its a real float
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// otherwise we usually get different float values on the last positions
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if result != math.Inf(-1) {
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result = float64(int(result*10000)) / 10000
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestMod(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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a interface{}
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b interface{}
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expect interface{}
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}{
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{3, 2, int64(1)},
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{3, 1, int64(0)},
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{3, 0, false},
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{0, 3, int64(0)},
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{3.1, 2, false},
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{3, 2.1, false},
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{3.1, 2.1, false},
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{int8(3), int8(2), int64(1)},
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{int16(3), int16(2), int64(1)},
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{int32(3), int32(2), int64(1)},
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{int64(3), int64(2), int64(1)},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.Mod(test.a, test.b)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestModBool(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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a interface{}
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b interface{}
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expect interface{}
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}{
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{3, 3, true},
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{3, 2, false},
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{3, 1, true},
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{3, 0, nil},
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{0, 3, true},
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{3.1, 2, nil},
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{3, 2.1, nil},
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{3.1, 2.1, nil},
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{int8(3), int8(3), true},
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{int8(3), int8(2), false},
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{int16(3), int16(3), true},
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{int16(3), int16(2), false},
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{int32(3), int32(3), true},
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{int32(3), int32(2), false},
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{int64(3), int64(3), true},
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{int64(3), int64(2), false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.ModBool(test.a, test.b)
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if test.expect == nil {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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func TestRound(t *testing.T) {
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t.Parallel()
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ns := New()
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for i, test := range []struct {
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x interface{}
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expect interface{}
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}{
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{0.1, 0.0},
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{0.5, 1.0},
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{1.1, 1.0},
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{1.5, 2.0},
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{-0.1, -0.0},
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{-0.5, -1.0},
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{-1.1, -1.0},
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{-1.5, -2.0},
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{"abc", false},
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} {
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errMsg := fmt.Sprintf("[%d] %v", i, test)
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result, err := ns.Round(test.x)
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if b, ok := test.expect.(bool); ok && !b {
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require.Error(t, err, errMsg)
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continue
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}
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require.NoError(t, err, errMsg)
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assert.Equal(t, test.expect, result, errMsg)
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}
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}
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