github.com/cloudwego/hertz@v0.9.3/pkg/common/compress/compress_test.go (about)

     1  /*
     2   * Copyright 2022 CloudWeGo Authors
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   *
    16   * The MIT License (MIT)
    17   *
    18   * Copyright (c) 2015-present Aliaksandr Valialkin, VertaMedia, Kirill Danshin, Erik Dubbelboer, FastHTTP Authors
    19   *
    20   * Permission is hereby granted, free of charge, to any person obtaining a copy
    21   * of this software and associated documentation files (the "Software"), to deal
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    25   * furnished to do so, subject to the following conditions:
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    27   * The above copyright notice and this permission notice shall be included in
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    30   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    31   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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    36   * THE SOFTWARE.
    37   *
    38   * This file may have been modified by CloudWeGo authors. All CloudWeGo
    39   * Modifications are Copyright 2022 CloudWeGo Authors.
    40   */
    41  
    42  package compress
    43  
    44  import (
    45  	"io"
    46  	"testing"
    47  )
    48  
    49  func TestCompressNewCompressWriterPoolMap(t *testing.T) {
    50  	pool := newCompressWriterPoolMap()
    51  	if len(pool) != 12 {
    52  		t.Fatalf("Unexpected number for WriterPoolMap: %d. Expecting 12", len(pool))
    53  	}
    54  }
    55  
    56  func TestCompressAppendGunzipBytes(t *testing.T) {
    57  	dst1 := []byte("")
    58  	// src unzip -> "hello". The src must the string that has been gunzipped.
    59  	src1 := []byte{31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 202, 72, 205, 201, 201, 7, 0, 0, 0, 255, 255}
    60  	expectedRes1 := "hello"
    61  	res1, err1 := AppendGunzipBytes(dst1, src1)
    62  	// gzip will wrap io.EOF to io.ErrUnexpectedEOF
    63  	// just ignore in this case
    64  	if err1 != io.ErrUnexpectedEOF {
    65  		t.Fatalf("Unexpected error: %s", err1)
    66  	}
    67  	if string(res1) != expectedRes1 {
    68  		t.Fatalf("Unexpected : %s. Expecting : %s", res1, expectedRes1)
    69  	}
    70  
    71  	dst2 := []byte("!!!")
    72  	src2 := []byte{31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 202, 72, 205, 201, 201, 7, 0, 0, 0, 255, 255}
    73  	expectedRes2 := "!!!hello"
    74  	res2, err2 := AppendGunzipBytes(dst2, src2)
    75  	if err2 != io.ErrUnexpectedEOF {
    76  		t.Fatalf("Unexpected error: %s", err2)
    77  	}
    78  	if string(res2) != expectedRes2 {
    79  		t.Fatalf("Unexpected : %s. Expecting : %s", res2, expectedRes2)
    80  	}
    81  
    82  	dst3 := []byte("!!!")
    83  	src3 := []byte{31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 0, 0, 0, 255, 255}
    84  	expectedRes3 := "!!!"
    85  	res3, err3 := AppendGunzipBytes(dst3, src3)
    86  	if err3 != io.ErrUnexpectedEOF {
    87  		t.Fatalf("Unexpected error: %s", err3)
    88  	}
    89  	if string(res3) != expectedRes3 {
    90  		t.Fatalf("Unexpected : %s. Expecting : %s", res3, expectedRes3)
    91  	}
    92  }
    93  
    94  func TestCompressAppendGzipBytesLevel(t *testing.T) {
    95  	// test the byteSliceWriter case for WriteGzipLevel
    96  	dst1 := []byte("")
    97  	src1 := []byte("hello")
    98  	res1 := AppendGzipBytesLevel(dst1, src1, 5)
    99  	expectedRes1 := []byte{31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 202, 72, 205, 201, 201, 7, 4, 0, 0, 255, 255, 134, 166, 16, 54, 5, 0, 0, 0}
   100  	if string(res1) != string(expectedRes1) {
   101  		t.Fatalf("Unexpected : %s. Expecting : %s", res1, expectedRes1)
   102  	}
   103  }
   104  
   105  func TestCompressWriteGzipLevel(t *testing.T) {
   106  	// test default case for WriteGzipLevel
   107  	var w defaultByteWriter
   108  	p := []byte("hello")
   109  	expectedW := []byte{31, 139, 8, 0, 0, 0, 0, 0, 0, 255, 202, 72, 205, 201, 201, 7, 4, 0, 0, 255, 255, 134, 166, 16, 54, 5, 0, 0, 0}
   110  	num, err := WriteGzipLevel(&w, p, 5)
   111  	if string(expectedW) != string(w.b) {
   112  		t.Fatalf("Unexpected : %s. Expecting: %s.", w.b, expectedW)
   113  	}
   114  	if num != len(p) {
   115  		t.Fatalf("Unexpected number of compressed bytes: %d", num)
   116  	}
   117  	if err != nil {
   118  		t.Fatalf("Unexpected error: %s", err)
   119  	}
   120  }
   121  
   122  type defaultByteWriter struct {
   123  	b []byte
   124  }
   125  
   126  func (w *defaultByteWriter) Write(p []byte) (int, error) {
   127  	w.b = append(w.b, p...)
   128  	return len(p), nil
   129  }