Add core packages, configuration system, and initial application structure

pkg/encoders/ints/ints_test.go

@@ -0,0 +1,87 @@
+package ints
+
+import (
+	"math"
+	"strconv"
+	"testing"
+
+	"lol.mleku.dev/chk"
+
+	"lukechampine.com/frand"
+)
+
+func TestMarshalUnmarshal(t *testing.T) {
+	b := make([]byte, 0, 8)
+	var rem []byte
+	var n *T
+	var err error
+	for _ = range 10000000 {
+		n = New(uint64(frand.Intn(math.MaxInt64)))
+		b = n.Marshal(b)
+		m := New(0)
+		if rem, err = m.Unmarshal(b); chk.E(err) {
+			t.Fatal(err)
+		}
+		if n.N != m.N {
+			t.Fatalf("failed to convert to int64 at %d %s %d", n.N, b, m.N)
+		}
+		if len(rem) > 0 {
+			t.Fatalf("leftover bytes after converting back: '%s'", rem)
+		}
+		b = b[:0]
+	}
+}
+
+func BenchmarkByteStringToInt64(bb *testing.B) {
+	b := make([]byte, 0, 19)
+	var i int
+	const nTests = 10000000
+	testInts := make([]*T, nTests)
+	for i = range nTests {
+		testInts[i] = New(frand.Intn(math.MaxInt64))
+	}
+	bb.Run(
+		"Marshal", func(bb *testing.B) {
+			bb.ReportAllocs()
+			for i = 0; i < bb.N; i++ {
+				n := testInts[i%10000]
+				b = n.Marshal(b)
+				b = b[:0]
+			}
+		},
+	)
+	bb.Run(
+		"Itoa", func(bb *testing.B) {
+			bb.ReportAllocs()
+			var s string
+			for i = 0; i < bb.N; i++ {
+				n := testInts[i%10000]
+				s = strconv.Itoa(int(n.N))
+				_ = s
+			}
+		},
+	)
+	bb.Run(
+		"MarshalUnmarshal", func(bb *testing.B) {
+			bb.ReportAllocs()
+			m := New(0)
+			for i = 0; i < bb.N; i++ {
+				n := testInts[i%10000]
+				b = m.Marshal(b)
+				_, _ = n.Unmarshal(b)
+				b = b[:0]
+			}
+		},
+	)
+	bb.Run(
+		"ItoaAtoi", func(bb *testing.B) {
+			bb.ReportAllocs()
+			var s string
+			for i = 0; i < bb.N; i++ {
+				n := testInts[i%10000]
+				s = strconv.Itoa(int(n.N))
+				_, _ = strconv.Atoi(s)
+			}
+		},
+	)
+}