// calling the given match function.
	verify(name string, matchString func(pat, str string) (bool, error)) error
}

// simpleMatch matches a test name if all of the pattern strings match in
// sequence.
type simpleMatch []string

// alternationMatch matches a test name if one of the alternations match.
type alternationMatch []filterMatch

      $found = Select-String -Path $user_keys_file -Pattern $ssh_key -SimpleMatch
      if ($found -eq $null) {
        Add-Content -Encoding UTF8 $user_keys_file $ssh_key
      }
      $found = Select-String -Path $administrator_keys_file -Pattern $ssh_key -SimpleMatch
      if ($found -eq $null) {
        Add-Content -Encoding UTF8 $administrator_keys_file $ssh_key
      }
    }

			t.Errorf("IsSpace(%U)=%t incorrect", r, isSpace(r))
			n++
			if n > 10 {
				return
			}
		}
	}
}

func TestSplitRegexp(t *T) {
	res := func(s ...string) filterMatch { return simpleMatch(s) }
	alt := func(m ...filterMatch) filterMatch { return alternationMatch(m) }
	testCases := []struct {
		pattern string
		result  filterMatch
	}{
		// Correct patterns