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moby--moby/pkg/stringutils/stringutils_test.go

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package stringutils
import "testing"
func testLengthHelper(generator func(int) string, t *testing.T) {
expectedLength := 20
s := generator(expectedLength)
if len(s) != expectedLength {
t.Fatalf("Length of %s was %d but expected length %d", s, len(s), expectedLength)
}
}
func testUniquenessHelper(generator func(int) string, t *testing.T) {
repeats := 25
set := make(map[string]struct{}, repeats)
for i := 0; i < repeats; i = i + 1 {
str := generator(64)
if len(str) != 64 {
t.Fatalf("Id returned is incorrect: %s", str)
}
if _, ok := set[str]; ok {
t.Fatalf("Random number is repeated")
}
set[str] = struct{}{}
}
}
func isASCII(s string) bool {
for _, c := range s {
if c > 127 {
return false
}
}
return true
}
func TestGenerateRandomAlphaOnlyStringLength(t *testing.T) {
testLengthHelper(GenerateRandomAlphaOnlyString, t)
}
func TestGenerateRandomAlphaOnlyStringUniqueness(t *testing.T) {
testUniquenessHelper(GenerateRandomAlphaOnlyString, t)
}
func TestGenerateRandomAsciiStringLength(t *testing.T) {
testLengthHelper(GenerateRandomAsciiString, t)
}
func TestGenerateRandomAsciiStringUniqueness(t *testing.T) {
testUniquenessHelper(GenerateRandomAsciiString, t)
}
func TestGenerateRandomAsciiStringIsAscii(t *testing.T) {
str := GenerateRandomAsciiString(64)
if !isASCII(str) {
t.Fatalf("%s contained non-ascii characters", str)
}
}
func TestTruncate(t *testing.T) {
str := "teststring"
newstr := Truncate(str, 4)
if newstr != "test" {
t.Fatalf("Expected test, got %s", newstr)
}
newstr = Truncate(str, 20)
if newstr != "teststring" {
t.Fatalf("Expected teststring, got %s", newstr)
}
}
func TestInSlice(t *testing.T) {
slice := []string{"test", "in", "slice"}
test := InSlice(slice, "test")
if !test {
t.Fatalf("Expected string test to be in slice")
}
test = InSlice(slice, "SLICE")
if !test {
t.Fatalf("Expected string SLICE to be in slice")
}
test = InSlice(slice, "notinslice")
if test {
t.Fatalf("Expected string notinslice not to be in slice")
}
}