github.com/bingoohuang/gg@v0.0.0-20240325092523-45da7dee9335/pkg/man/bytes_test.go (about)

     1  package man
     2  
     3  import (
     4  	"testing"
     5  )
     6  
     7  func TestByteParsing(t *testing.T) {
     8  	tests := []struct {
     9  		in  string
    10  		exp uint64
    11  	}{
    12  		{"42", 42},
    13  		{"42MB", 42000000},
    14  		{"42MiB", 44040192},
    15  		{"42mb", 42000000},
    16  		{"42mib", 44040192},
    17  		{"42MIB", 44040192},
    18  		{"42 MB", 42000000},
    19  		{"42 MiB", 44040192},
    20  		{"42 mb", 42000000},
    21  		{"42 mib", 44040192},
    22  		{"42 MIB", 44040192},
    23  		{"42.5MB", 42500000},
    24  		{"42.5MiB", 44564480},
    25  		{"42.5 MB", 42500000},
    26  		{"42.5 MiB", 44564480},
    27  		// No need to say B
    28  		{"42M", 42000000},
    29  		{"42Mi", 44040192},
    30  		{"42m", 42000000},
    31  		{"42mi", 44040192},
    32  		{"42MI", 44040192},
    33  		{"42 M", 42000000},
    34  		{"42 Mi", 44040192},
    35  		{"42 m", 42000000},
    36  		{"42 mi", 44040192},
    37  		{"42 MI", 44040192},
    38  		{"42.5M", 42500000},
    39  		{"42.5Mi", 44564480},
    40  		{"42.5 M", 42500000},
    41  		{"42.5 Mi", 44564480},
    42  		// Bug #42
    43  		{"1,005.03 MB", 1005030000},
    44  		// Large testing, breaks when too much larger than
    45  		// this.
    46  		{"12.5 EB", uint64(12.5 * float64(EByte))},
    47  		{"12.5 E", uint64(12.5 * float64(EByte))},
    48  		{"12.5 EiB", uint64(12.5 * float64(EiByte))},
    49  	}
    50  
    51  	for _, p := range tests {
    52  		got, err := ParseBytes(p.in)
    53  		if err != nil {
    54  			t.Errorf("Couldn't parse %v: %v", p.in, err)
    55  		}
    56  		if got != p.exp {
    57  			t.Errorf("Expected %v for %v, got %v",
    58  				p.exp, p.in, got)
    59  		}
    60  	}
    61  }
    62  
    63  func TestByteErrors(t *testing.T) {
    64  	got, err := ParseBytes("84 JB")
    65  	if err == nil {
    66  		t.Errorf("Expected error, got %v", got)
    67  	}
    68  	got, err = ParseBytes("")
    69  	if err == nil {
    70  		t.Errorf("Expected error parsing nothing")
    71  	}
    72  	got, err = ParseBytes("16 EiB")
    73  	if err == nil {
    74  		t.Errorf("Expected error, got %v", got)
    75  	}
    76  }
    77  
    78  func TestBytes(t *testing.T) {
    79  	testList{
    80  		{"bytes(0)", Bytes(0), "0B"},
    81  		{"bytes(1)", Bytes(1), "1B"},
    82  		{"bytes(803)", Bytes(803), "803B"},
    83  		{"bytes(999)", Bytes(999), "999B"},
    84  
    85  		{"bytes(1024)", Bytes(1024), "1kB"},
    86  		{"bytes(9999)", Bytes(9999), "10kB"},
    87  		{"bytes(1MB - 1)", Bytes(MByte - Byte), "1000kB"},
    88  
    89  		{"bytes(1MB)", Bytes(1024 * 1024), "1MB"},
    90  		{"bytes(1GB - 1K)", Bytes(GByte - KByte), "1000MB"},
    91  
    92  		{"bytes(1GB)", Bytes(GByte), "1GB"},
    93  		{"bytes(1TB - 1M)", Bytes(TByte - MByte), "1000GB"},
    94  		{"bytes(10MB)", Bytes(9999 * 1000), "10MB"},
    95  
    96  		{"bytes(1TB)", Bytes(TByte), "1TB"},
    97  		{"bytes(1PB - 1T)", Bytes(PByte - TByte), "999TB"},
    98  
    99  		{"bytes(1PB)", Bytes(PByte), "1PB"},
   100  		{"bytes(1PB - 1T)", Bytes(EByte - PByte), "999PB"},
   101  
   102  		{"bytes(1EB)", Bytes(EByte), "1EB"},
   103  		// Overflows.
   104  		// {"bytes(1EB - 1P)", Bytes((KByte*EByte)-PByte), "1023EB"},
   105  
   106  		{"bytes(0)", IBytes(0), "0B"},
   107  		{"bytes(1)", IBytes(1), "1B"},
   108  		{"bytes(803)", IBytes(803), "803B"},
   109  		{"bytes(1023)", IBytes(1023), "1023B"},
   110  
   111  		{"bytes(1024)", IBytes(1024), "1KiB"},
   112  		{"bytes(1MB - 1)", IBytes(MiByte - IByte), "1024KiB"},
   113  
   114  		{"bytes(1MB)", IBytes(1024 * 1024), "1MiB"},
   115  		{"bytes(1GB - 1K)", IBytes(GiByte - KiByte), "1024MiB"},
   116  
   117  		{"bytes(1GB)", IBytes(GiByte), "1GiB"},
   118  		{"bytes(1TB - 1M)", IBytes(TiByte - MiByte), "1024GiB"},
   119  
   120  		{"bytes(1TB)", IBytes(TiByte), "1TiB"},
   121  		{"bytes(1PB - 1T)", IBytes(PiByte - TiByte), "1023TiB"},
   122  
   123  		{"bytes(1PB)", IBytes(PiByte), "1PiB"},
   124  		{"bytes(1PB - 1T)", IBytes(EiByte - PiByte), "1023PiB"},
   125  
   126  		{"bytes(1EiB)", IBytes(EiByte), "1EiB"},
   127  		// Overflows.
   128  		// {"bytes(1EB - 1P)", IBytes((KIByte*EIByte)-PiByte), "1023EB"},
   129  
   130  		{"bytes(5.5GiB)", IBytes(5.5 * GiByte), "5.5GiB"},
   131  
   132  		{"bytes(5.5GB)", Bytes(5.5 * GByte), "5.5GB"},
   133  	}.validate(t)
   134  }
   135  
   136  func BenchmarkParseBytes(b *testing.B) {
   137  	for i := 0; i < b.N; i++ {
   138  		ParseBytes("16.5 GB")
   139  	}
   140  }
   141  
   142  func BenchmarkBytes(b *testing.B) {
   143  	for i := 0; i < b.N; i++ {
   144  		Bytes(16.5 * GByte)
   145  	}
   146  }