add some unittest

datastruct/dict/simple_test.go

@@ -0,0 +1,39 @@
+package dict
+
+import (
+	"github.com/hdt3213/godis/lib/utils"
+	"testing"
+)
+
+func TestSimpleDict_Keys(t *testing.T) {
+	d := MakeSimple()
+	size := 10
+	for i := 0; i < size; i++ {
+		d.Put(utils.RandString(5), utils.RandString(5))
+	}
+	if len(d.Keys()) != size {
+		t.Errorf("expect %d keys, actual: %d", size, len(d.Keys()))
+	}
+}
+
+func TestSimpleDict_PutIfExists(t *testing.T) {
+	d := MakeSimple()
+	key := utils.RandString(5)
+	val := key + "1"
+	ret := d.PutIfExists(key, val)
+	if ret != 0 {
+		t.Error("expect 0")
+		return
+	}
+	d.Put(key, val)
+	val = key + "2"
+	ret = d.PutIfExists(key, val)
+	if ret != 1 {
+		t.Error("expect 1")
+		return
+	}
+	if v, _ := d.Get(key); v != val {
+		t.Error("wrong value")
+		return
+	}
+}