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Improve docs and tests of utils package

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This commit is contained in:
Daniel 2018-08-23 15:00:25 +02:00
parent 627939f7c6
commit c9f41a65af
2 changed files with 14 additions and 8 deletions
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7
utils/slices.go
View file

@ -1,6 +1,7 @@
package utils
func StringInSlice(s string, a []string) bool {
// StringInSlice returns whether the given string is in the string slice.
func StringInSlice(a []string, s string) bool {
for _, entry := range a {
if entry == s {
return true
@ -9,6 +10,7 @@ func StringInSlice(s string, a []string) bool {
return false
}
// RemoveFromStringSlice removes the given string from the slice and returns a new slice.
func RemoveFromStringSlice(a []string, s string) []string {
for key, entry := range a {
if entry == s {
@ -19,12 +21,14 @@ func RemoveFromStringSlice(a []string, s string) []string {
return a
}
// DuplicateStrings returns a new copy of the given string slice.
func DuplicateStrings(a []string) []string {
b := make([]string, len(a))
copy(b, a)
return b
}
// StringSliceEqual returns whether the given string slices are equal.
func StringSliceEqual(a []string, b []string) bool {
if len(a) != len(b) {
return false
@ -37,6 +41,7 @@ func StringSliceEqual(a []string, b []string) bool {
return true
}
// DuplicateBytes returns a new copy of the given byte slice.
func DuplicateBytes(a []byte) []byte {
b := make([]byte, len(a))
copy(b, a)

15
utils/slices_test.go
View file

@ -13,23 +13,23 @@ var (
)
func TestStringInSlice(t *testing.T) {
if !StringInSlice("a", stringTestSlice) {
if !StringInSlice(stringTestSlice, "a") {
t.Fatal("string reported not in slice (1), but it is")
}
if !StringInSlice("d", stringTestSlice) {
if !StringInSlice(stringTestSlice, "d") {
t.Fatal("string reported not in slice (2), but it is")
}
if !StringInSlice("j", stringTestSlice) {
if !StringInSlice(stringTestSlice, "j") {
t.Fatal("string reported not in slice (3), but it is")
}
if StringInSlice("0", stringTestSlice) {
if StringInSlice(stringTestSlice, "0") {
t.Fatal("string reported in slice (1), but is not")
}
if StringInSlice("x", stringTestSlice) {
if StringInSlice(stringTestSlice, "x") {
t.Fatal("string reported in slice (2), but is not")
}
if StringInSlice("k", stringTestSlice) {
if StringInSlice(stringTestSlice, "k") {
t.Fatal("string reported in slice (3), but is not")
}
}
@ -37,12 +37,13 @@ func TestStringInSlice(t *testing.T) {
func TestRemoveFromStringSlice(t *testing.T) {
test1 := DuplicateStrings(stringTestSlice)
test1 = RemoveFromStringSlice(test1, "b")
if StringInSlice("b", test1) {
if StringInSlice(test1, "b") {
t.Fatal("string reported in slice, but was removed")
}
if len(test1) != len(stringTestSlice)-1 {
t.Fatalf("new string slice length not as expected: is %d, should be %d\nnew slice is %v", len(test1), len(stringTestSlice)-1, test1)
}
RemoveFromStringSlice(test1, "b")
}
func TestDuplicateStrings(t *testing.T) {