optimize memory usage

lib/benchmark/bench_test.go

@@ -1,61 +1,43 @@
 package benchmark
 
 import (
+	"context"
+	"crypto/rand"
 	"testing"
 
 	"github.com/sergi/go-diff/diffmatchpatch"
-	"github.com/ysmood/got"
 	"github.com/ysmood/got/lib/lcs"
 )
 
-func BenchmarkLinesYad(b *testing.B) {
-	// We use the same test file as https://github.com/sergi/go-diff/tree/master/testdata
-
-	g := got.T(b)
-	xs := lcs.NewLines(g.ReadFile("fixtures/speedtest1.txt").String())
-	ys := lcs.NewLines(g.ReadFile("fixtures/speedtest2.txt").String())
-
-	b.StartTimer()
-
-	for i := 0; i < b.N; i++ {
-		xs.YadLCS(g.Context(), ys)
-	}
-}
-
-func BenchmarkLinesGoogle(b *testing.B) {
-	g := got.T(b)
-	xs := g.ReadFile("fixtures/speedtest1.txt").String()
-	ys := g.ReadFile("fixtures/speedtest2.txt").String()
-	dmp := diffmatchpatch.New()
-
-	b.StartTimer()
-
-	for i := 0; i < b.N; i++ {
-		dmp.DiffMain(xs, ys, true)
-	}
-}
+var x = randStr(100)
+var y = randStr(100)
 
 func BenchmarkRandomYad(b *testing.B) {
-	g := got.T(b)
-	xs := lcs.NewChars(g.ReadFile("fixtures/rand_x.txt").String())
-	ys := lcs.NewChars(g.ReadFile("fixtures/rand_y.txt").String())
+	lcs.Compress = false
+	c := context.Background()
+
+	xs := lcs.NewChars(x)
+	ys := lcs.NewChars(y)
 
 	b.StartTimer()
 
 	for i := 0; i < b.N; i++ {
-		xs.YadLCS(g.Context(), ys)
+		xs.YadLCS(c, ys)
 	}
 }
 
 func BenchmarkRandomGoogle(b *testing.B) {
-	g := got.T(b)
-	xs := g.ReadFile("fixtures/rand_x.txt").String()
-	ys := g.ReadFile("fixtures/rand_y.txt").String()
 	dmp := diffmatchpatch.New()
 
 	b.StartTimer()
 
 	for i := 0; i < b.N; i++ {
-		dmp.DiffMain(xs, ys, false)
+		dmp.DiffMain(x, y, false)
 	}
 }
+
+func randStr(n int) string {
+	b := make([]byte, n)
+	_, _ = rand.Read(b)
+	return string(b)
+}