github.com/vmware/govmomi@v0.43.0/vim25/progress/reader_test.go (about)

     1  /*
     2  Copyright (c) 2014 VMware, Inc. All Rights Reserved.
     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  
    17  package progress
    18  
    19  import (
    20  	"context"
    21  	"io"
    22  	"strings"
    23  	"testing"
    24  )
    25  
    26  func TestReader(t *testing.T) {
    27  	s := "helloworld"
    28  	ch := make(chan Report, 1)
    29  	pr := NewReader(context.Background(), &dummySinker{ch}, strings.NewReader(s), int64(len(s)))
    30  
    31  	var buf [10]byte
    32  	var q Report
    33  	var n int
    34  	var err error
    35  
    36  	// Read first byte
    37  	n, err = pr.Read(buf[0:1])
    38  	if n != 1 {
    39  		t.Errorf("Expected n=1, but got: %d", n)
    40  	}
    41  
    42  	if err != nil {
    43  		t.Errorf("Error: %s", err)
    44  	}
    45  
    46  	q = <-ch
    47  	if q.Error() != nil {
    48  		t.Errorf("Error: %s", err)
    49  	}
    50  
    51  	if f := q.Percentage(); f != 10.0 {
    52  		t.Errorf("Expected percentage after 1 byte to be 10%%, but got: %.0f%%", f)
    53  	}
    54  
    55  	// Read remaining bytes
    56  	n, err = pr.Read(buf[:])
    57  	if n != 9 {
    58  		t.Errorf("Expected n=1, but got: %d", n)
    59  	}
    60  	if err != nil {
    61  		t.Errorf("Error: %s", err)
    62  	}
    63  
    64  	q = <-ch
    65  	if q.Error() != nil {
    66  		t.Errorf("Error: %s", err)
    67  	}
    68  
    69  	if f := q.Percentage(); f != 100.0 {
    70  		t.Errorf("Expected percentage after 10 bytes to be 100%%, but got: %.0f%%", f)
    71  	}
    72  
    73  	// Read EOF
    74  	_, err = pr.Read(buf[:])
    75  	<-ch
    76  	if err != io.EOF {
    77  		t.Errorf("Expected io.EOF, but got: %s", err)
    78  	}
    79  
    80  	// Mark progress reader as done
    81  	pr.Done(io.EOF)
    82  	<-ch
    83  	if err != io.EOF {
    84  		t.Errorf("Expected io.EOF, but got: %s", err)
    85  	}
    86  
    87  	// Progress channel should be closed after progress reader is marked done
    88  	_, ok := <-ch
    89  	if ok {
    90  		t.Errorf("Expected channel to be closed")
    91  	}
    92  }