sdk/go/blockdigest/blockdigest_test.go

   1 package blockdigest
   2
   3 import (
   4         "fmt"
   5         "runtime"
   6         "strings"
   7         "testing"
   8 )
   9
  10 func getStackTrace() string {
  11         buf := make([]byte, 1000)
  12         bytes_written := runtime.Stack(buf, false)
  13         return "Stack Trace:\n" + string(buf[:bytes_written])
  14 }
  15
  16 func expectEqual(t *testing.T, actual interface{}, expected interface{}) {
  17         if actual != expected {
  18                 t.Fatalf("Expected %v but received %v instead. %s",
  19                         expected,
  20                         actual,
  21                         getStackTrace())
  22         }
  23 }
  24
  25 func expectStringSlicesEqual(t *testing.T, actual []string, expected []string) {
  26         if len(actual) != len(expected) {
  27                 t.Fatalf("Expected %v (length %d), but received %v (length %d) instead. %s", expected, len(expected), actual, len(actual), getStackTrace())
  28         }
  29         for i := range actual {
  30                 if actual[i] != expected[i] {
  31                         t.Fatalf("Expected %v but received %v instead (first disagreement at position %d). %s", expected, actual, i, getStackTrace())
  32                 }
  33         }
  34 }
  35
  36 func expectValidDigestString(t *testing.T, s string) {
  37         bd, err := FromString(s)
  38         if err != nil {
  39                 t.Fatalf("Expected %s to produce a valid BlockDigest but instead got error: %v", s, err)
  40         }
  41
  42         expected := strings.ToLower(s)
  43
  44         if expected != bd.String() {
  45                 t.Fatalf("Expected %s to be returned by FromString(%s).String() but instead we received %s", expected, s, bd.String())
  46         }
  47 }
  48
  49 func expectInvalidDigestString(t *testing.T, s string) {
  50         _, err := FromString(s)
  51         if err == nil {
  52                 t.Fatalf("Expected %s to be an invalid BlockDigest, but did not receive an error", s)
  53         }
  54 }
  55
  56 func expectBlockLocator(t *testing.T, actual BlockLocator, expected BlockLocator) {
  57         expectEqual(t, actual.Digest, expected.Digest)
  58         expectEqual(t, actual.Size, expected.Size)
  59         expectStringSlicesEqual(t, actual.Hints, expected.Hints)
  60 }
  61
  62 func expectLocatorPatternMatch(t *testing.T, s string) {
  63         if !LocatorPattern.MatchString(s) {
  64                 t.Fatalf("Expected \"%s\" to match locator pattern but it did not.",
  65                         s)
  66         }
  67 }
  68
  69 func expectLocatorPatternFail(t *testing.T, s string) {
  70         if LocatorPattern.MatchString(s) {
  71                 t.Fatalf("Expected \"%s\" to fail locator pattern but it passed.",
  72                         s)
  73         }
  74 }
  75
  76 func TestValidDigestStrings(t *testing.T) {
  77         expectValidDigestString(t, "01234567890123456789abcdefabcdef")
  78         expectValidDigestString(t, "01234567890123456789ABCDEFABCDEF")
  79         expectValidDigestString(t, "01234567890123456789AbCdEfaBcDeF")
  80 }
  81
  82 func TestInvalidDigestStrings(t *testing.T) {
  83         expectInvalidDigestString(t, "01234567890123456789abcdefabcdeg")
  84         expectInvalidDigestString(t, "01234567890123456789abcdefabcde")
  85         expectInvalidDigestString(t, "01234567890123456789abcdefabcdefa")
  86         expectInvalidDigestString(t, "g1234567890123456789abcdefabcdef")
  87 }
  88
  89 func TestBlockDigestWorksAsMapKey(t *testing.T) {
  90         m := make(map[BlockDigest]int)
  91         bd := AssertFromString("01234567890123456789abcdefabcdef")
  92         m[bd] = 5
  93 }
  94
  95 func TestBlockDigestGetsPrettyPrintedByPrintf(t *testing.T) {
  96         input := "01234567890123456789abcdefabcdef"
  97         prettyPrinted := fmt.Sprintf("%v", AssertFromString(input))
  98         if prettyPrinted != input {
  99                 t.Fatalf("Expected blockDigest produced from \"%s\" to be printed as "+
 100                         "\"%s\", but instead it was printed as %s",
 101                         input, input, prettyPrinted)
 102         }
 103 }
 104
 105 func TestBlockDigestGetsPrettyPrintedByPrintfInNestedStructs(t *testing.T) {
 106         input := "01234567890123456789abcdefabcdef"
 107         value := 42
 108         nested := struct {
 109                 // Fun trivia fact: If this field was called "digest" instead of
 110                 // "Digest", then it would not be exported and String() would
 111                 // never get called on it and our output would look very
 112                 // different.
 113                 Digest BlockDigest
 114                 value  int
 115         }{
 116                 AssertFromString(input),
 117                 value,
 118         }
 119         prettyPrinted := fmt.Sprintf("%+v", nested)
 120         expected := fmt.Sprintf("{Digest:%s value:%d}", input, value)
 121         if prettyPrinted != expected {
 122                 t.Fatalf("Expected blockDigest produced from \"%s\" to be printed as "+
 123                         "\"%s\", but instead it was printed as %s",
 124                         input, expected, prettyPrinted)
 125         }
 126 }
 127
 128 func TestLocatorPatternBasic(t *testing.T) {
 129         expectLocatorPatternMatch(t, "12345678901234567890123456789012+12345")
 130         expectLocatorPatternMatch(t, "A2345678901234abcdefababdeffdfdf+12345")
 131         expectLocatorPatternMatch(t, "12345678901234567890123456789012+12345+A1")
 132         expectLocatorPatternMatch(t,
 133                 "12345678901234567890123456789012+12345+A1+B123wxyz@_-")
 134         expectLocatorPatternMatch(t,
 135                 "12345678901234567890123456789012+12345+A1+B123wxyz@_-+C@")
 136
 137         expectLocatorPatternFail(t, "12345678901234567890123456789012")
 138         expectLocatorPatternFail(t, "12345678901234567890123456789012+")
 139         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+")
 140         expectLocatorPatternFail(t, "1234567890123456789012345678901+12345")
 141         expectLocatorPatternFail(t, "123456789012345678901234567890123+12345")
 142         expectLocatorPatternFail(t, "g2345678901234abcdefababdeffdfdf+12345")
 143         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345 ")
 144         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+1")
 145         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+1A")
 146         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+A")
 147         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+a1")
 148         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+A1+")
 149         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+A1+B")
 150         expectLocatorPatternFail(t, "12345678901234567890123456789012+12345+A+B2")
 151 }
 152
 153 func TestParseBlockLocatorSimple(t *testing.T) {
 154         b, err := ParseBlockLocator("365f83f5f808896ec834c8b595288735+2310+K@qr1hi+Af0c9a66381f3b028677411926f0be1c6282fe67c@542b5ddf")
 155         if err != nil {
 156                 t.Fatalf("Unexpected error parsing block locator: %v", err)
 157         }
 158         expectBlockLocator(t, b, BlockLocator{Digest: AssertFromString("365f83f5f808896ec834c8b595288735"),
 159                 Size: 2310,
 160                 Hints: []string{"K@qr1hi",
 161                         "Af0c9a66381f3b028677411926f0be1c6282fe67c@542b5ddf"}})
 162 }