Add OS Version check tests

management/server/posture/os_version.go

@@ -35,9 +35,9 @@ func (c *OSVersionCheck) Check(peer nbpeer.Peer) error {
 	case "ios":
 		return checkMinVersion(peerGoOS, peer.Meta.Core, c.Ios)
 	case "linux":
-		return checkMinKernelVersion(peerGoOS, peer.Meta.Core, c.Linux)
+		return checkMinKernelVersion(peerGoOS, peer.Meta.KernelVersion, c.Linux)
 	case "windows":
-		return checkMinKernelVersion(peerGoOS, peer.Meta.Core, c.Windows)
+		return checkMinKernelVersion(peerGoOS, peer.Meta.KernelVersion, c.Windows)
 	}
 	return nil
 }

management/server/posture/os_version_test.go

@@ -0,0 +1,75 @@
+package posture
+
+import (
+	"testing"
+
+	"github.com/netbirdio/netbird/management/server/peer"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOSVersionCheck_Check(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   peer.Peer
+		check   OSVersionCheck
+		wantErr bool
+	}{
+		{
+			name: "Valid Peer Linux Kernel version",
+			input: peer.Peer{
+				Meta: peer.PeerSystemMeta{
+					GoOS:          "linux",
+					KernelVersion: "6.1.1",
+				},
+			},
+			check: OSVersionCheck{
+				Linux: &MinKernelVersionCheck{
+					MinKernelVersion: "6.0.0",
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "Valid Peer macOS version",
+			input: peer.Peer{
+				Meta: peer.PeerSystemMeta{
+					GoOS: "darwin",
+					Core: "14.2.1",
+				},
+			},
+			check: OSVersionCheck{
+				Darwin: &MinVersionCheck{
+					MinVersion: "13",
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "No valid Peer macOS version",
+			input: peer.Peer{
+				Meta: peer.PeerSystemMeta{
+					GoOS: "darwin",
+					Core: "14.2.1",
+				},
+			},
+			check: OSVersionCheck{
+				Darwin: &MinVersionCheck{
+					MinVersion: "15",
+				},
+			},
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.check.Check(tt.input)
+			if tt.wantErr {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}