53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
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package regexp2
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import "testing"
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func TestRightToLeft_Basic(t *testing.T) {
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re := MustCompile(`foo\d+`, RightToLeft)
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s := "0123456789foo4567890foo1foo 0987"
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m, err := re.FindStringMatch(s)
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if err != nil {
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t.Fatalf("Unexpected err: %v", err)
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}
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if want, got := "foo1", m.String(); want != got {
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t.Fatalf("Match 0 failed, wanted %v, got %v", want, got)
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}
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m, err = re.FindNextMatch(m)
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if err != nil {
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t.Fatalf("Unexpected err: %v", err)
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}
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if want, got := "foo4567890", m.String(); want != got {
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t.Fatalf("Match 1 failed, wanted %v, got %v", want, got)
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}
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}
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func TestRightToLeft_StartAt(t *testing.T) {
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re := MustCompile(`\d`, RightToLeft)
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m, err := re.FindStringMatchStartingAt("0123", -1)
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if err != nil {
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t.Fatalf("Unexpected err: %v", err)
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}
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if m == nil {
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t.Fatalf("Expected match")
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}
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if want, got := "3", m.String(); want != got {
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t.Fatalf("Find failed, wanted '%v', got '%v'", want, got)
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}
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}
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func TestRightToLeft_Replace(t *testing.T) {
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re := MustCompile(`\d`, RightToLeft)
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s := "0123456789foo4567890foo "
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str, err := re.Replace(s, "#", -1, 7)
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if err != nil {
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t.Fatalf("Unexpected err: %v", err)
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}
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if want, got := "0123456789foo#######foo ", str; want != got {
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t.Fatalf("Replace failed, wanted '%v', got '%v'", want, got)
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}
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}
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