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strings: add LastIndexAny

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The need for a LastIndexAny function has come up in the discussion
for https://golang.org/cl/3008041/. This function is
implemented analogously to lastIndexFunc, using functions from
the utf8 package.

R=r, rsc, PeterGo
CC=golang-dev
https://golang.org/cl/3057041
This commit is contained in:
Benny Siegert 2010-11-12 12:47:50 -08:00 • committed by Rob Pike
parent f0d174b776
commit 8530e8ef65
4 changed files with 79 additions and 9 deletions
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20
src/pkg/strings/strings_test.go
View file

@ -86,6 +86,19 @@ var indexAnyTests = []IndexTest{
{"aRegExp*", ".(|)*+?^$[]", 7},
{dots + dots + dots, " ", -1},
}
var lastIndexAnyTests = []IndexTest{
{"", "", -1},
{"", "a", -1},
{"", "abc", -1},
{"a", "", -1},
{"a", "a", 0},
{"aaa", "a", 2},
{"abc", "xyz", -1},
{"abc", "ab", 1},
{"a☺b☻c☹d", "uvw☻xyz", 2 + len("☺")},
{"a.RegExp*", ".(|)*+?^$[]", 8},
{dots + dots + dots, " ", -1},
}
// Execute f on each test case. funcName should be the name of f; it's used
// in failure reports.
@ -98,9 +111,10 @@ func runIndexTests(t *testing.T, f func(s, sep string) int, funcName string, tes
}
}
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) }
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) }
func TestLastIndexAny(t *testing.T) { runIndexTests(t, LastIndexAny, "LastIndexAny", lastIndexAnyTests) }
type ExplodeTest struct {
s string