Initial commit

mdb/change/encoding_test.go

@@ -0,0 +1,64 @@
+package change
+
+import (
+	"bytes"
+	crand "crypto/rand"
+	"math/rand"
+	"testing"
+)
+
+func randChange() Change {
+	c := Change{
+		CollectionID: rand.Uint64(),
+		ItemID:       rand.Uint64(),
+		Store:        rand.Float32() < 0.5,
+	}
+
+	if c.Store {
+		data := make([]byte, 1+rand.Intn(100))
+		crand.Read(data)
+		c.Data = data
+	}
+
+	c.WritePageIDs = make([]uint64, rand.Intn(10))
+	for i := range c.WritePageIDs {
+		c.WritePageIDs[i] = rand.Uint64()
+	}
+
+	c.ClearPageIDs = make([]uint64, rand.Intn(10))
+	for i := range c.ClearPageIDs {
+		c.ClearPageIDs[i] = rand.Uint64()
+	}
+
+	return c
+}
+
+func randChangeSlice() []Change {
+	changes := make([]Change, 1+rand.Intn(10))
+	for i := range changes {
+		changes[i] = randChange()
+	}
+	return changes
+}
+
+func TestWriteRead(t *testing.T) {
+	in := randChangeSlice()
+	var out []Change
+
+	buf := &bytes.Buffer{}
+	if err := Write(in, buf); err != nil {
+		t.Fatal(err)
+	}
+
+	out, err := Read(out, buf)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(in) != len(out) {
+		t.Fatal(len(in), len(out))
+	}
+	for i := range in {
+		in[i].AssertEqual(t, out[i])
+	}
+}