Added unit-tests into ydb backend

internal/backends/ydb/collection_test.go

@@ -0,0 +1,71 @@
+package ydb
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestStatsType tests the stats type structure
+func TestStatsType(t *testing.T) {
+	t.Parallel()
+
+	s := &stats{
+		countDocuments:  100,
+		sizeIndexes:     1024,
+		sizeTables:      2048,
+		sizeFreeStorage: 512,
+	}
+
+	assert.Equal(t, int64(100), s.countDocuments)
+	assert.Equal(t, int64(1024), s.sizeIndexes)
+	assert.Equal(t, int64(2048), s.sizeTables)
+	assert.Equal(t, int64(512), s.sizeFreeStorage)
+}
+
+// TestStatsZeroValues tests stats with zero values
+func TestStatsZeroValues(t *testing.T) {
+	t.Parallel()
+
+	s := &stats{}
+
+	assert.Equal(t, int64(0), s.countDocuments)
+	assert.Equal(t, int64(0), s.sizeIndexes)
+	assert.Equal(t, int64(0), s.sizeTables)
+	assert.Equal(t, int64(0), s.sizeFreeStorage)
+}
+
+// TestStatsNegativeValues tests stats with negative values (edge case)
+func TestStatsNegativeValues(t *testing.T) {
+	t.Parallel()
+
+	s := &stats{
+		countDocuments:  -1,
+		sizeIndexes:     -100,
+		sizeTables:      -200,
+		sizeFreeStorage: -50,
+	}
+
+	assert.Equal(t, int64(-1), s.countDocuments)
+	assert.Equal(t, int64(-100), s.sizeIndexes)
+	assert.Equal(t, int64(-200), s.sizeTables)
+	assert.Equal(t, int64(-50), s.sizeFreeStorage)
+}
+
+// TestStatsLargeValues tests stats with large values
+func TestStatsLargeValues(t *testing.T) {
+	t.Parallel()
+
+	s := &stats{
+		countDocuments:  9223372036854775807, // max int64
+		sizeIndexes:     9223372036854775807,
+		sizeTables:      9223372036854775807,
+		sizeFreeStorage: 9223372036854775807,
+	}
+
+	assert.Equal(t, int64(9223372036854775807), s.countDocuments)
+	assert.Equal(t, int64(9223372036854775807), s.sizeIndexes)
+	assert.Equal(t, int64(9223372036854775807), s.sizeTables)
+	assert.Equal(t, int64(9223372036854775807), s.sizeFreeStorage)
+}
+