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5b89670a31
One of the proposals in #23328 This PR introduces a simple expression calculator (templates/eval/eval.go), it can do basic expression calculations. Many untested template helper functions like `Mul` `Add` can be replaced by this new approach. Then these `Add` / `Mul` / `percentage` / `Subtract` / `DiffStatsWidth` could all use this `Eval`. And it provides enhancements for Golang templates, and improves readability. Some examples: ---- * Before: `{{Add (Mul $glyph.Row 12) 12}}` * After: `{{Eval $glyph.Row "*" 12 "+" 12}}` ---- * Before: `{{if lt (Add $i 1) (len $.Topics)}}` * After: `{{if Eval $i "+" 1 "<" (len $.Topics)}}` ## FAQ ### Why not use an existing expression package? We need a highly customized expression engine: * do the calculation on the fly, without pre-compiling * deal with int/int64/float64 types, to make the result could be used in Golang template. * make the syntax could be used in the Golang template directly * do not introduce too much complex or strange syntax, we just need a simple calculator. * it needs to strictly follow Golang template's behavior, for example, Golang template treats all non-zero values as truth, but many 3rd packages don't do so. ### What's the benefit? * Developers don't need to add more `Add`/`Mul`/`Sub`-like functions, they were getting more and more. Now, only one `Eval` is enough for all cases. * The new code reads better than old `{{Add (Mul $glyph.Row 12) 12}}`, the old one isn't familiar to most procedural programming developers (eg, the Golang expression syntax). * The `Eval` is fully covered by tests, many old `Add`/`Mul`-like functions were never tested. ### The performance? It doesn't use `reflect`, it doesn't need to parse or compile when used in Golang template, the performance is as fast as native Go template. ### Is it too complex? Could it be unstable? The expression calculator program is a common homework for computer science students, and it's widely used as a teaching and practicing purpose for developers. The algorithm is pretty well-known. The behavior can be clearly defined, it is stable.
208 lines
6.2 KiB
Go
208 lines
6.2 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package base
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import (
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"os"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestEncodeMD5(t *testing.T) {
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assert.Equal(t,
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"3858f62230ac3c915f300c664312c63f",
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EncodeMD5("foobar"),
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)
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}
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func TestEncodeSha1(t *testing.T) {
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assert.Equal(t,
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"8843d7f92416211de9ebb963ff4ce28125932878",
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EncodeSha1("foobar"),
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)
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}
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func TestEncodeSha256(t *testing.T) {
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assert.Equal(t,
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"c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2",
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EncodeSha256("foobar"),
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)
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}
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func TestShortSha(t *testing.T) {
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assert.Equal(t, "veryverylo", ShortSha("veryverylong"))
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}
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func TestBasicAuthDecode(t *testing.T) {
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_, _, err := BasicAuthDecode("?")
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assert.Equal(t, "illegal base64 data at input byte 0", err.Error())
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user, pass, err := BasicAuthDecode("Zm9vOmJhcg==")
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assert.NoError(t, err)
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assert.Equal(t, "foo", user)
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assert.Equal(t, "bar", pass)
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_, _, err = BasicAuthDecode("aW52YWxpZA==")
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assert.Error(t, err)
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_, _, err = BasicAuthDecode("invalid")
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assert.Error(t, err)
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}
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func TestBasicAuthEncode(t *testing.T) {
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assert.Equal(t, "Zm9vOmJhcg==", BasicAuthEncode("foo", "bar"))
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assert.Equal(t, "MjM6IjotLS0t", BasicAuthEncode("23:\"", "----"))
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}
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func TestVerifyTimeLimitCode(t *testing.T) {
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tc := []struct {
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data string
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minutes int
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code string
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valid bool
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}{{
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data: "data",
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minutes: 2,
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code: testCreateTimeLimitCode(t, "data", 2),
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valid: true,
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}, {
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data: "abc123-ß",
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minutes: 1,
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code: testCreateTimeLimitCode(t, "abc123-ß", 1),
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valid: true,
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}, {
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data: "data",
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minutes: 2,
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code: "2021012723240000005928251dac409d2c33a6eb82c63410aaad569bed",
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valid: false,
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}}
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for _, test := range tc {
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actualValid := VerifyTimeLimitCode(test.data, test.minutes, test.code)
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assert.Equal(t, test.valid, actualValid, "data: '%s' code: '%s' should be valid: %t", test.data, test.code, test.valid)
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}
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}
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func testCreateTimeLimitCode(t *testing.T, data string, m int) string {
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result0 := CreateTimeLimitCode(data, m, nil)
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result1 := CreateTimeLimitCode(data, m, time.Now().Format("200601021504"))
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result2 := CreateTimeLimitCode(data, m, time.Unix(time.Now().Unix()+int64(time.Minute)*int64(m), 0).Format("200601021504"))
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assert.Equal(t, result0, result1)
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assert.NotEqual(t, result0, result2)
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assert.True(t, len(result0) != 0)
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return result0
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}
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func TestFileSize(t *testing.T) {
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var size int64 = 512
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assert.Equal(t, "512 B", FileSize(size))
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size *= 1024
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assert.Equal(t, "512 KiB", FileSize(size))
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size *= 1024
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assert.Equal(t, "512 MiB", FileSize(size))
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size *= 1024
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assert.Equal(t, "512 GiB", FileSize(size))
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size *= 1024
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assert.Equal(t, "512 TiB", FileSize(size))
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size *= 1024
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assert.Equal(t, "512 PiB", FileSize(size))
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size *= 4
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assert.Equal(t, "2.0 EiB", FileSize(size))
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}
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func TestEllipsisString(t *testing.T) {
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assert.Equal(t, "...", EllipsisString("foobar", 0))
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assert.Equal(t, "...", EllipsisString("foobar", 1))
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assert.Equal(t, "...", EllipsisString("foobar", 2))
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assert.Equal(t, "...", EllipsisString("foobar", 3))
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assert.Equal(t, "f...", EllipsisString("foobar", 4))
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assert.Equal(t, "fo...", EllipsisString("foobar", 5))
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assert.Equal(t, "foobar", EllipsisString("foobar", 6))
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assert.Equal(t, "foobar", EllipsisString("foobar", 10))
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assert.Equal(t, "测...", EllipsisString("测试文本一二三四", 4))
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assert.Equal(t, "测试...", EllipsisString("测试文本一二三四", 5))
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assert.Equal(t, "测试文...", EllipsisString("测试文本一二三四", 6))
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assert.Equal(t, "测试文本一二三四", EllipsisString("测试文本一二三四", 10))
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}
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func TestTruncateString(t *testing.T) {
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assert.Equal(t, "", TruncateString("foobar", 0))
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assert.Equal(t, "f", TruncateString("foobar", 1))
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assert.Equal(t, "fo", TruncateString("foobar", 2))
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assert.Equal(t, "foo", TruncateString("foobar", 3))
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assert.Equal(t, "foob", TruncateString("foobar", 4))
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assert.Equal(t, "fooba", TruncateString("foobar", 5))
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assert.Equal(t, "foobar", TruncateString("foobar", 6))
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assert.Equal(t, "foobar", TruncateString("foobar", 7))
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assert.Equal(t, "测试文本", TruncateString("测试文本一二三四", 4))
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assert.Equal(t, "测试文本一", TruncateString("测试文本一二三四", 5))
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assert.Equal(t, "测试文本一二", TruncateString("测试文本一二三四", 6))
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assert.Equal(t, "测试文本一二三", TruncateString("测试文本一二三四", 7))
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}
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func TestStringsToInt64s(t *testing.T) {
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testSuccess := func(input []string, expected []int64) {
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result, err := StringsToInt64s(input)
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assert.NoError(t, err)
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assert.Equal(t, expected, result)
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}
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testSuccess([]string{}, []int64{})
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testSuccess([]string{"-1234"}, []int64{-1234})
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testSuccess([]string{"1", "4", "16", "64", "256"},
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[]int64{1, 4, 16, 64, 256})
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_, err := StringsToInt64s([]string{"-1", "a", "$"})
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assert.Error(t, err)
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}
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func TestInt64sToStrings(t *testing.T) {
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assert.Equal(t, []string{}, Int64sToStrings([]int64{}))
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assert.Equal(t,
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[]string{"1", "4", "16", "64", "256"},
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Int64sToStrings([]int64{1, 4, 16, 64, 256}),
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)
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}
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func TestInt64sContains(t *testing.T) {
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assert.True(t, Int64sContains([]int64{6, 44324, 4324, 32, 1, 2323}, 1))
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assert.True(t, Int64sContains([]int64{2323}, 2323))
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assert.False(t, Int64sContains([]int64{6, 44324, 4324, 32, 1, 2323}, 232))
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}
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func TestIsLetter(t *testing.T) {
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assert.True(t, IsLetter('a'))
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assert.True(t, IsLetter('e'))
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assert.True(t, IsLetter('q'))
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assert.True(t, IsLetter('z'))
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assert.True(t, IsLetter('A'))
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assert.True(t, IsLetter('E'))
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assert.True(t, IsLetter('Q'))
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assert.True(t, IsLetter('Z'))
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assert.True(t, IsLetter('_'))
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assert.False(t, IsLetter('-'))
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assert.False(t, IsLetter('1'))
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assert.False(t, IsLetter('$'))
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assert.False(t, IsLetter(0x00))
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assert.False(t, IsLetter(0x93))
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}
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// TODO: Test EntryIcon
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func TestSetupGiteaRoot(t *testing.T) {
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_ = os.Setenv("GITEA_ROOT", "test")
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assert.Equal(t, "test", SetupGiteaRoot())
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_ = os.Setenv("GITEA_ROOT", "")
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assert.NotEqual(t, "test", SetupGiteaRoot())
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}
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func TestFormatNumberSI(t *testing.T) {
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assert.Equal(t, "125", FormatNumberSI(int(125)))
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assert.Equal(t, "1.3k", FormatNumberSI(int64(1317)))
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assert.Equal(t, "21.3M", FormatNumberSI(21317675))
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assert.Equal(t, "45.7G", FormatNumberSI(45721317675))
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assert.Equal(t, "", FormatNumberSI("test"))
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}
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