mirror of
https://github.com/EchoVault/SugarDB.git
synced 2025-09-27 04:16:06 +08:00
378 lines
10 KiB
Go
378 lines
10 KiB
Go
// Copyright 2024 Kelvin Clement Mwinuka
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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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//
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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 sugardb
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import (
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"context"
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"testing"
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)
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func TestSugarDB_String(t *testing.T) {
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server := createSugarDB()
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t.Cleanup(func() {
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server.ShutDown()
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})
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t.Run("TestSugarDB_SUBSTR", func(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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presetValue interface{}
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substrFunc func(key string, start int, end int) (string, error)
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key string
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start int
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end int
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want string
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wantErr bool
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}{
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{
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name: "Return substring within the range of the string",
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key: "substr_key1",
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substrFunc: server.SubStr,
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presetValue: "Test String One",
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start: 5,
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end: 10,
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want: "String",
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wantErr: false,
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},
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{
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name: "Return substring at the end of the string with exact end index",
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key: "substr_key2",
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substrFunc: server.SubStr,
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presetValue: "Test String Two",
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start: 12,
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end: 14,
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want: "Two",
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wantErr: false,
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},
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{
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name: "Return substring at the end of the string with end index greater than length",
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key: "substr_key3",
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substrFunc: server.SubStr,
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presetValue: "Test String Three",
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start: 12,
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end: 75,
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want: "Three",
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},
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{
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name: "Return the substring at the start of the string with 0 start index",
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key: "substr_key4",
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substrFunc: server.SubStr,
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presetValue: "Test String Four",
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start: 0,
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end: 3,
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want: "Test",
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wantErr: false,
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},
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{
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// Return the substring with negative start index.
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// Substring should begin abs(start) from the end of the string when start is negative.
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name: "Return the substring with negative start index",
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key: "substr_key5",
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substrFunc: server.SubStr,
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presetValue: "Test String Five",
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start: -11,
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end: 10,
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want: "String",
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wantErr: false,
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},
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{
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// Return reverse substring with end index smaller than start index.
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// When end index is smaller than start index, the 2 indices are reversed.
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name: "Return reverse substring with end index smaller than start index",
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key: "substr_key6",
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substrFunc: server.SubStr,
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presetValue: "Test String Six",
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start: 4,
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end: 0,
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want: "tseT",
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},
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{
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name: "Return substring within the range of the string",
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key: "substr_key7",
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substrFunc: server.GetRange,
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presetValue: "Test String One",
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start: 5,
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end: 10,
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want: "String",
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wantErr: false,
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},
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{
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name: "Return substring at the end of the string with exact end index",
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key: "substr_key8",
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substrFunc: server.GetRange,
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presetValue: "Test String Two",
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start: 12,
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end: 14,
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want: "Two",
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wantErr: false,
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},
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{
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name: "Return substring at the end of the string with end index greater than length",
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key: "substr_key9",
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substrFunc: server.GetRange,
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presetValue: "Test String Three",
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start: 12,
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end: 75,
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want: "Three",
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},
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{
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name: "Return the substring at the start of the string with 0 start index",
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key: "substr_key10",
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substrFunc: server.GetRange,
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presetValue: "Test String Four",
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start: 0,
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end: 3,
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want: "Test",
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wantErr: false,
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},
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{
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// Return the substring with negative start index.
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// Substring should begin abs(start) from the end of the string when start is negative.
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name: "Return the substring with negative start index",
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key: "substr_key11",
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substrFunc: server.GetRange,
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presetValue: "Test String Five",
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start: -11,
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end: 10,
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want: "String",
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wantErr: false,
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},
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{
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// Return reverse substring with end index smaller than start index.
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// When end index is smaller than start index, the 2 indices are reversed.
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name: "Return reverse substring with end index smaller than start index",
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key: "substr_key12",
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substrFunc: server.GetRange,
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presetValue: "Test String Six",
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start: 4,
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end: 0,
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want: "tseT",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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if tt.presetValue != nil {
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err := presetValue(server, context.Background(), tt.key, tt.presetValue)
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if err != nil {
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t.Error(err)
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return
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}
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}
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got, err := tt.substrFunc(tt.key, tt.start, tt.end)
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if (err != nil) != tt.wantErr {
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t.Errorf("GETRANGE() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if got != tt.want {
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t.Errorf("GETRANGE() got = %v, want %v", got, tt.want)
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}
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})
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}
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})
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t.Run("TestSugarDB_SETRANGE", func(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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presetValue interface{}
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key string
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offset int
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new string
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want int
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wantErr bool
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}{
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{
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name: "Test that SETRANGE on non-existent string creates new string",
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key: "setrange_key1",
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presetValue: "",
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offset: 10,
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new: "New String Value",
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want: len("New String Value"),
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wantErr: false,
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},
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{
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name: "Test SETRANGE with an offset that leads to a longer resulting string",
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key: "setrange_key2",
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presetValue: "Original String Value",
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offset: 16,
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new: "Portion Replaced With This New String",
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want: len("Original String Portion Replaced With This New String"),
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wantErr: false,
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},
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{
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name: "SETRANGE with negative offset prepends the string",
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key: "setrange_key3",
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presetValue: "This is a preset value",
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offset: -10,
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new: "Prepended ",
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want: len("Prepended This is a preset value"),
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wantErr: false,
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},
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{
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name: "SETRANGE with offset that embeds new string inside the old string",
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key: "setrange_key4",
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presetValue: "This is a preset value",
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offset: 0,
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new: "That",
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want: len("That is a preset value"),
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wantErr: false,
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},
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{
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name: "SETRANGE with offset longer than original lengths appends the string",
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key: "setrange_key5",
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presetValue: "This is a preset value",
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offset: 100,
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new: " Appended",
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want: len("This is a preset value Appended"),
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wantErr: false,
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},
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{
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name: "SETRANGE with offset on the last character replaces last character with new string",
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key: "setrange_key6",
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presetValue: "This is a preset value",
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offset: len("This is a preset value") - 1,
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new: " replaced",
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want: len("This is a preset valu replaced"),
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wantErr: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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if tt.presetValue != nil {
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err := presetValue(server, context.Background(), tt.key, tt.presetValue)
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if err != nil {
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t.Error(err)
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return
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}
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}
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got, err := server.SetRange(tt.key, tt.offset, tt.new)
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if (err != nil) != tt.wantErr {
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t.Errorf("SETRANGE() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if got != tt.want {
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t.Errorf("SETRANGE() got = %v, want %v", got, tt.want)
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}
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})
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}
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})
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t.Run("TestSugarDB_STRLEN", func(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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presetValue interface{}
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key string
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want int
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wantErr bool
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}{
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{
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name: "Return the correct string length for an existing string",
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key: "strlen_key1",
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presetValue: "Test String",
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want: len("Test String"),
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wantErr: false,
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},
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{
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name: "If the string does not exist, return 0",
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key: "strlen_key2",
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presetValue: "",
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want: 0,
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wantErr: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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if tt.presetValue != nil {
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err := presetValue(server, context.Background(), tt.key, tt.presetValue)
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if err != nil {
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t.Error(err)
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return
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}
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}
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got, err := server.StrLen(tt.key)
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if (err != nil) != tt.wantErr {
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t.Errorf("STRLEN() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if got != tt.want {
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t.Errorf("STRLEN() got = %v, want %v", got, tt.want)
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}
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})
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}
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})
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t.Run("TestSugarDB_APPEND", func(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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presetValue interface{}
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key string
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value string
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want int
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wantErr bool
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}{
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{
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name: "Test APPEND with no preset value",
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key: "append_key1",
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value: "Hello ",
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want: 6,
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wantErr: false,
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},
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{
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name: "Test APPEND with preset value",
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presetValue: "Hello ",
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key: "append_key2",
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value: "World",
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want: 11,
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wantErr: false,
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},
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{
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name: "Test APPEND with integer preset value",
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key: "append_key3",
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presetValue: 10,
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value: "Hello ",
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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if tt.presetValue != nil {
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err := presetValue(server, context.Background(), tt.key, tt.presetValue)
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if err != nil {
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t.Error(err)
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return
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}
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}
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got, err := server.Append(tt.key, tt.value)
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if (err != nil) != tt.wantErr {
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t.Errorf("APPEND() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if got != tt.want {
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t.Errorf("APPEND() got = %v, want %v", got, tt.want)
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}
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})
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}
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})
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}
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