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package runes
import (
"strings"
"testing"
)
type indexTest struct {
s []rune
sep []rune
out int
}
type equalTest struct {
a []rune
b []rune
out bool
}
func newIndexTest(s, sep string, out int) indexTest {
return indexTest{[]rune(s), []rune(sep), out}
}
func newEqualTest(s, sep string, out bool) equalTest {
return equalTest{[]rune(s), []rune(sep), out}
}
var dots = "1....2....3....4"
var indexTests = []indexTest{
newIndexTest("", "", 0),
newIndexTest("", "a", -1),
newIndexTest("", "foo", -1),
newIndexTest("fo", "foo", -1),
newIndexTest("foo", "foo", 0),
newIndexTest("oofofoofooo", "f", 2),
newIndexTest("oofofoofooo", "foo", 4),
newIndexTest("barfoobarfoo", "foo", 3),
newIndexTest("foo", "", 0),
newIndexTest("foo", "o", 1),
newIndexTest("abcABCabc", "A", 3),
// cases with one byte strings - test special case in Index()
newIndexTest("", "a", -1),
newIndexTest("x", "a", -1),
newIndexTest("x", "x", 0),
newIndexTest("abc", "a", 0),
newIndexTest("abc", "b", 1),
newIndexTest("abc", "c", 2),
newIndexTest("abc", "x", -1),
}
var lastIndexTests = []indexTest{
newIndexTest("", "", 0),
newIndexTest("", "a", -1),
newIndexTest("", "foo", -1),
newIndexTest("fo", "foo", -1),
newIndexTest("foo", "foo", 0),
newIndexTest("foo", "f", 0),
newIndexTest("oofofoofooo", "f", 7),
newIndexTest("oofofoofooo", "foo", 7),
newIndexTest("barfoobarfoo", "foo", 9),
newIndexTest("foo", "", 3),
newIndexTest("foo", "o", 2),
newIndexTest("abcABCabc", "A", 3),
newIndexTest("abcABCabc", "a", 6),
}
var indexAnyTests = []indexTest{
newIndexTest("", "", -1),
newIndexTest("", "a", -1),
newIndexTest("", "abc", -1),
newIndexTest("a", "", -1),
newIndexTest("a", "a", 0),
newIndexTest("aaa", "a", 0),
newIndexTest("abc", "xyz", -1),
newIndexTest("abc", "xcz", 2),
newIndexTest("a☺b☻c☹d", "uvw☻xyz", 3),
newIndexTest("aRegExp*", ".(|)*+?^$[]", 7),
newIndexTest(dots+dots+dots, " ", -1),
}
// Execute f on each test case. funcName should be the name of f; it's used
// in failure reports.
func runIndexTests(t *testing.T, f func(s, sep []rune) int, funcName string, testCases []indexTest) {
for _, test := range testCases {
actual := f(test.s, test.sep)
if actual != test.out {
t.Errorf("%s(%q,%q) = %v; want %v", funcName, test.s, test.sep, actual, test.out)
}
}
}
func TestIndex(t *testing.T) { runIndexTests(t, Index, "Index", indexTests) }
func TestLastIndex(t *testing.T) { runIndexTests(t, LastIndex, "LastIndex", lastIndexTests) }
func TestIndexAny(t *testing.T) { runIndexTests(t, IndexAny, "IndexAny", indexAnyTests) }
var equalTests = []equalTest{
newEqualTest("a", "a", true),
newEqualTest("a", "b", false),
newEqualTest("a☺b☻c☹d", "uvw☻xyz", false),
newEqualTest("a☺b☻c☹d", "a☺b☻c☹d", true),
}
func TestEqual(t *testing.T) {
for _, test := range equalTests {
actual := Equal(test.a, test.b)
if actual != test.out {
t.Errorf("Equal(%q,%q) = %v; want %v", test.a, test.b, actual, test.out)
}
}
}
func BenchmarkLastIndexRunes(b *testing.B) {
r := []rune("abcdef")
n := []rune("cd")
for i := 0; i < b.N; i++ {
LastIndex(r, n)
}
}
func BenchmarkLastIndexStrings(b *testing.B) {
r := "abcdef"
n := "cd"
for i := 0; i < b.N; i++ {
strings.LastIndex(r, n)
}
}
func BenchmarkIndexAnyRunes(b *testing.B) {
s := []rune("...b...")
c := []rune("abc")
for i := 0; i < b.N; i++ {
IndexAny(s, c)
}
}
func BenchmarkIndexAnyStrings(b *testing.B) {
s := "...b..."
c := "abc"
for i := 0; i < b.N; i++ {
strings.IndexAny(s, c)
}
}
func BenchmarkIndexRuneRunes(b *testing.B) {
s := []rune("...b...")
r := 'b'
for i := 0; i < b.N; i++ {
IndexRune(s, r)
}
}
func BenchmarkIndexRuneStrings(b *testing.B) {
s := "...b..."
r := 'b'
for i := 0; i < b.N; i++ {
strings.IndexRune(s, r)
}
}
func BenchmarkIndexRunes(b *testing.B) {
r := []rune("abcdef")
n := []rune("cd")
for i := 0; i < b.N; i++ {
Index(r, n)
}
}
func BenchmarkIndexStrings(b *testing.B) {
r := "abcdef"
n := "cd"
for i := 0; i < b.N; i++ {
strings.Index(r, n)
}
}
func BenchmarkEqualRunes(b *testing.B) {
x := []rune("abc")
y := []rune("abc")
for i := 0; i < b.N; i++ {
if Equal(x, y) {
continue
}
}
}
func BenchmarkEqualStrings(b *testing.B) {
x := "abc"
y := "abc"
for i := 0; i < b.N; i++ {
if x == y {
continue
}
}
}
func BenchmarkNotEqualRunes(b *testing.B) {
x := []rune("abc")
y := []rune("abcd")
for i := 0; i < b.N; i++ {
if Equal(x, y) {
continue
}
}
}
func BenchmarkNotEqualStrings(b *testing.B) {
x := "abc"
y := "abcd"
for i := 0; i < b.N; i++ {
if x == y {
continue
}
}
}
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