impr: command - dbsize, ttl, type

internal/command/server/dbsize_test.go

@@ -0,0 +1,60 @@
+package server
+
+import (
+	"testing"
+
+	"github.com/nalgeon/redka/internal/redis"
+	"github.com/nalgeon/redka/internal/testx"
+)
+
+func TestDBSizeParse(t *testing.T) {
+	tests := []struct {
+		cmd string
+		err error
+	}{
+		{
+			cmd: "dbsize",
+			err: nil,
+		},
+		{
+			cmd: "dbsize name",
+			err: redis.ErrInvalidArgNum,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.cmd, func(t *testing.T) {
+			_, err := redis.Parse(ParseDBSize, test.cmd)
+			testx.AssertEqual(t, err, test.err)
+		})
+	}
+}
+
+func TestDBSizeExec(t *testing.T) {
+	t.Run("dbsize", func(t *testing.T) {
+		db, red := getDB(t)
+		defer db.Close()
+
+		_ = db.Str().Set("name", "alice")
+		_ = db.Str().Set("age", 25)
+
+		cmd := redis.MustParse(ParseDBSize, "dbsize")
+		conn := redis.NewFakeConn()
+		res, err := cmd.Run(conn, red)
+		testx.AssertNoErr(t, err)
+		testx.AssertEqual(t, res, 2)
+		testx.AssertEqual(t, conn.Out(), "2")
+	})
+
+	t.Run("empty", func(t *testing.T) {
+		db, red := getDB(t)
+		defer db.Close()
+
+		cmd := redis.MustParse(ParseDBSize, "dbsize")
+		conn := redis.NewFakeConn()
+		res, err := cmd.Run(conn, red)
+		testx.AssertNoErr(t, err)
+		testx.AssertEqual(t, res, 0)
+		testx.AssertEqual(t, conn.Out(), "0")
+	})
+}