lmdb: new querying mechanism.

2025-08-04 15:16:38 -03:00
parent 6bda63de17
commit 2750ae3751
7 changed files with 256 additions and 399 deletions
@@ -0,0 +1,27 @@
+package lmdb
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestQuickselect(t *testing.T) {
+	its := iterators{
+		{last: 781},
+		{last: 900},
+		{last: 1},
+		{last: 81},
+		{last: 325},
+		{last: 781},
+		{last: 562},
+		{last: 81},
+		{last: 444},
+	}
+
+	its.quickselect(3, 0, len(its))
+	require.ElementsMatch(t, its[len(its)-3:], iterators{{last: 900}, {last: 781}, {last: 781}})
+
+	its.quickselect(4, 0, len(its))
+	require.ElementsMatch(t, its[len(its)-4:], iterators{{last: 562}, {last: 900}, {last: 781}, {last: 781}})
+}