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strings: adjust and add tests for strings.Index and strings.LastIndex

A strings.Index test is implemented in ExampleLastIndex,
so moved to ExampleIndex. strings.Index and strings.LastIndex do not
have empty substr test, so added them.

Change-Id: I9ba6099467addf35b7b6df6840c3278cccca4892
This commit is contained in:
Kenichi Kamiya 2021-03-20 23:09:56 +09:00
parent 6ae3b70ef2
commit 0d7c239f59

View File

@ -107,9 +107,13 @@ func ExampleHasSuffix() {
}
func ExampleIndex() {
fmt.Println(strings.Index("go gopher", "go"))
fmt.Println(strings.Index("go gopher", ""))
fmt.Println(strings.Index("chicken", "ken"))
fmt.Println(strings.Index("chicken", "dmr"))
// Output:
// 0
// 0
// 4
// -1
}
@ -151,12 +155,12 @@ func ExampleIndexRune() {
}
func ExampleLastIndex() {
fmt.Println(strings.Index("go gopher", "go"))
fmt.Println(strings.LastIndex("go gopher", "go"))
fmt.Println(strings.LastIndex("go gopher", ""))
fmt.Println(strings.LastIndex("go gopher", "rodent"))
// Output:
// 0
// 3
// 9
// -1
}