github.com/coreos/mantle@v0.13.0/update/generator/bzip2_test.go (about)

     1  // Copyright 2016 CoreOS, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package generator
    16  
    17  import (
    18  	"bytes"
    19  	"compress/bzip2"
    20  	"io/ioutil"
    21  	"testing"
    22  
    23  	"github.com/coreos/mantle/system/exec"
    24  )
    25  
    26  func bunzip2(t *testing.T, z []byte) []byte {
    27  	b, err := ioutil.ReadAll(bzip2.NewReader(bytes.NewReader(z)))
    28  	if err != nil {
    29  		t.Fatal(err)
    30  	}
    31  	return b
    32  }
    33  
    34  func TestBzip2(t *testing.T) {
    35  	smallOnes, err := Bzip2(testOnes)
    36  	if err != nil {
    37  		if exec.IsCmdNotFound(err) {
    38  			t.Skip(err)
    39  		}
    40  
    41  		t.Fatal(err)
    42  	}
    43  
    44  	bigOnes := bunzip2(t, smallOnes)
    45  	if !bytes.Equal(bigOnes, testOnes) {
    46  		t.Fatal("bzip2 corrupted the data")
    47  	}
    48  }