all: resync with master

internal/aghnet/net_linux_internal_test.go

@@ -0,0 +1,126 @@
+//go:build linux
+
+package aghnet
+
+import (
+	"io/fs"
+	"testing"
+	"testing/fstest"
+
+	"github.com/AdguardTeam/golibs/testutil"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHasStaticIP(t *testing.T) {
+	const ifaceName = "wlan0"
+
+	const (
+		dhcpcd    = "etc/dhcpcd.conf"
+		netifaces = "etc/network/interfaces"
+	)
+
+	testCases := []struct {
+		rootFsys   fs.FS
+		name       string
+		wantHas    assert.BoolAssertionFunc
+		wantErrMsg string
+	}{{
+		rootFsys: fstest.MapFS{
+			dhcpcd: &fstest.MapFile{
+				Data: []byte(`#comment` + nl +
+					`# comment` + nl +
+					`interface eth0` + nl +
+					`static ip_address=192.168.0.1/24` + nl +
+					`# interface ` + ifaceName + nl +
+					`static ip_address=192.168.1.1/24` + nl +
+					`# comment` + nl,
+				),
+			},
+		},
+		name:       "dhcpcd_has_not",
+		wantHas:    assert.False,
+		wantErrMsg: `no information about static ip`,
+	}, {
+		rootFsys: fstest.MapFS{
+			dhcpcd: &fstest.MapFile{
+				Data: []byte(`#comment` + nl +
+					`# comment` + nl +
+					`interface ` + ifaceName + nl +
+					`static ip_address=192.168.0.1/24` + nl +
+					`# interface ` + ifaceName + nl +
+					`static ip_address=192.168.1.1/24` + nl +
+					`# comment` + nl,
+				),
+			},
+		},
+		name:       "dhcpcd_has",
+		wantHas:    assert.True,
+		wantErrMsg: ``,
+	}, {
+		rootFsys: fstest.MapFS{
+			netifaces: &fstest.MapFile{
+				Data: []byte(`allow-hotplug ` + ifaceName + nl +
+					`#iface enp0s3 inet static` + nl +
+					`#  address 192.168.0.200` + nl +
+					`#  netmask 255.255.255.0` + nl +
+					`#  gateway 192.168.0.1` + nl +
+					`iface ` + ifaceName + ` inet dhcp` + nl,
+				),
+			},
+		},
+		name:       "netifaces_has_not",
+		wantHas:    assert.False,
+		wantErrMsg: `no information about static ip`,
+	}, {
+		rootFsys: fstest.MapFS{
+			netifaces: &fstest.MapFile{
+				Data: []byte(`allow-hotplug ` + ifaceName + nl +
+					`iface ` + ifaceName + ` inet static` + nl +
+					`  address 192.168.0.200` + nl +
+					`  netmask 255.255.255.0` + nl +
+					`  gateway 192.168.0.1` + nl +
+					`#iface ` + ifaceName + ` inet dhcp` + nl,
+				),
+			},
+		},
+		name:       "netifaces_has",
+		wantHas:    assert.True,
+		wantErrMsg: ``,
+	}, {
+		rootFsys: fstest.MapFS{
+			netifaces: &fstest.MapFile{
+				Data: []byte(`source hello` + nl +
+					`#iface ` + ifaceName + ` inet static` + nl,
+				),
+			},
+			"hello": &fstest.MapFile{
+				Data: []byte(`iface ` + ifaceName + ` inet static` + nl),
+			},
+		},
+		name:       "netifaces_another_file",
+		wantHas:    assert.True,
+		wantErrMsg: ``,
+	}, {
+		rootFsys: fstest.MapFS{
+			netifaces: &fstest.MapFile{
+				Data: []byte(`source hello` + nl +
+					`iface ` + ifaceName + ` inet static` + nl,
+				),
+			},
+		},
+		name:       "netifaces_ignore_another",
+		wantHas:    assert.True,
+		wantErrMsg: ``,
+	}}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			substRootDirFS(t, tc.rootFsys)
+
+			has, err := IfaceHasStaticIP(ifaceName)
+			testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
+
+			tc.wantHas(t, has)
+		})
+	}
+}