uname: add test for KernelVersion

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

uname/kernel_version_test.go

@@ -0,0 +1,27 @@
+// Copyright 2025 The uname Authors.
+package uname
+
+import (
+	"runtime"
+	"testing"
+)
+
+func TestKernelVersion(t *testing.T) {
+	x, y := KernelVersion()
+	t.Logf("KernelVersion: %d.%d (GOOS: %s)", x, y, runtime.GOOS)
+	switch runtime.GOOS {
+	case "linux":
+		// Go requires Linux >= 2.x.
+		if x < 2 {
+			t.Errorf("want major >= 2, got %d", x)
+		}
+		// Sanity check.
+		if y < 0 {
+			t.Errorf("want minor >= 0, got %d", y)
+		}
+	default:
+		if x != 0 || y != 0 {
+			t.Fatalf("want 0.0, got %d.%d", x, y)
+		}
+	}
+}