github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/util/humanizeutil/humanize_test.go (about)

     1  // Copyright 2016 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package humanizeutil_test
    12  
    13  import (
    14  	"math"
    15  	"testing"
    16  
    17  	"github.com/cockroachdb/cockroach/pkg/util/humanizeutil"
    18  	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
    19  )
    20  
    21  // TestHumanizeBytes verifies both IBytes and ParseBytes.
    22  func TestBytes(t *testing.T) {
    23  	defer leaktest.AfterTest(t)()
    24  
    25  	testCases := []struct {
    26  		value       int64
    27  		exp         string
    28  		expNeg      string
    29  		parseExp    int64
    30  		parseErr    string
    31  		parseErrNeg string
    32  	}{
    33  		{0, "0 B", "0 B", 0, "", ""},
    34  		{1024, "1.0 KiB", "-1.0 KiB", 1024, "", ""},
    35  		{1024 << 10, "1.0 MiB", "-1.0 MiB", 1024 << 10, "", ""},
    36  		{1024 << 20, "1.0 GiB", "-1.0 GiB", 1024 << 20, "", ""},
    37  		{1024 << 30, "1.0 TiB", "-1.0 TiB", 1024 << 30, "", ""},
    38  		{1024 << 40, "1.0 PiB", "-1.0 PiB", 1024 << 40, "", ""},
    39  		{1024 << 50, "1.0 EiB", "-1.0 EiB", 1024 << 50, "", ""},
    40  		{int64(math.MaxInt64), "8.0 EiB", "-8.0 EiB", 0, "too large: 8.0 EiB", "too large: -8.0 EiB"},
    41  	}
    42  
    43  	for i, testCase := range testCases {
    44  		// Test IBytes.
    45  		if actual := humanizeutil.IBytes(testCase.value); actual != testCase.exp {
    46  			t.Errorf("%d: IBytes(%d) actual:%s does not match expected:%s", i, testCase.value, actual, testCase.exp)
    47  		}
    48  		// Test negative IBytes.
    49  		if actual := humanizeutil.IBytes(-testCase.value); actual != testCase.expNeg {
    50  			t.Errorf("%d: IBytes(%d) actual:%s does not match expected:%s", i, -testCase.value, actual,
    51  				testCase.expNeg)
    52  		}
    53  		// Test ParseBytes.
    54  		if actual, err := humanizeutil.ParseBytes(testCase.exp); err != nil {
    55  			if len(testCase.parseErr) > 0 {
    56  				if testCase.parseErr != err.Error() {
    57  					t.Errorf("%d: ParseBytes(%s) caused an incorrect error actual:%s, expected:%s", i, testCase.exp,
    58  						err, testCase.parseErr)
    59  				}
    60  			} else {
    61  				t.Errorf("%d: ParseBytes(%s) caused an unexpected error:%s", i, testCase.exp, err)
    62  			}
    63  		} else if actual != testCase.parseExp {
    64  			t.Errorf("%d: ParseBytes(%s) actual:%d does not match expected:%d", i, testCase.exp, actual,
    65  				testCase.parseExp)
    66  		}
    67  		// Test negative ParseBytes.
    68  		if actual, err := humanizeutil.ParseBytes(testCase.expNeg); err != nil {
    69  			if len(testCase.parseErrNeg) > 0 {
    70  				if testCase.parseErrNeg != err.Error() {
    71  					t.Errorf("%d: ParseBytes(%s) caused an incorrect error actual:%s, expected:%s", i, testCase.expNeg,
    72  						err, testCase.parseErrNeg)
    73  				}
    74  			} else {
    75  				t.Errorf("%d: ParseBytes(%s) caused an unexpected error:%s", i, testCase.expNeg, err)
    76  			}
    77  		} else if actual != -testCase.parseExp {
    78  			t.Errorf("%d: ParseBytes(%s) actual:%d does not match expected:%d", i, testCase.expNeg, actual,
    79  				-testCase.parseExp)
    80  		}
    81  	}
    82  
    83  	// Some extra error cases for good measure.
    84  	testFailCases := []struct {
    85  		value    string
    86  		expected string
    87  	}{
    88  		{"", "parsing \"\": invalid syntax"},   // our error
    89  		{"1 ZB", "unhandled size name: zb"},    // humanize's error
    90  		{"-1 ZB", "unhandled size name: zb"},   // humanize's error
    91  		{"1 ZiB", "unhandled size name: zib"},  // humanize's error
    92  		{"-1 ZiB", "unhandled size name: zib"}, // humanize's error
    93  		{"100 EiB", "too large: 100 EiB"},      // humanize's error
    94  		{"-100 EiB", "too large: 100 EiB"},     // humanize's error
    95  		{"10 EiB", "too large: 10 EiB"},        // our error
    96  		{"-10 EiB", "too large: -10 EiB"},      // our error
    97  	}
    98  	for i, testCase := range testFailCases {
    99  		if _, err := humanizeutil.ParseBytes(testCase.value); err.Error() != testCase.expected {
   100  			t.Errorf("%d: ParseBytes(%s) caused an incorrect error actual:%s, expected:%s", i, testCase.value, err,
   101  				testCase.expected)
   102  		}
   103  	}
   104  }