Added benchmarks to the scrabble_score exercism test.

scrabble_score_test.go

package scrabble_score

import "testing"

var tests = []struct {
	input    string
	expected int
}{
	{"", 0},
	{" \t\n", 0},
	{"a", 1},
	{"f", 4},
	{"street", 6},
	{"quirky", 22},
	{"MULTIBILLIONAIRE", 20},
	{"alacrity", 13},
}

func TestScore(t *testing.T) {
	for _, test := range tests {
		if actual := Score(test.input); actual != test.expected {
			t.Errorf("Score(%q) expected %d, Actual %d", test.input, test.expected, actual)
		}
	}
}

func BenchmarkScore(b *testing.B) {
	for n := 0; n < b.N; n++ {
		Score("quirkymuffin")
	}
}

func BenchmarkScoreUnicode(b *testing.B) {
	for n := 0; n < b.N; n++ {
		ScoreUnicode("quirkymuffin")
	}
}

On my machine:

❯ go test -bench=.
PASS
BenchmarkScore   5000000           330 ns/op
BenchmarkScoreUnicode   10000000           247 ns/op
ok      _/Users/zachad/Projects/exercism/go/scrabble-score  4.719s