feat: add localhost into hosts if the networking mode is not host

Signed-off-by: Parham Alvani <1995parham@tuta.io>

1 files changed, 29 insertions, 0 deletions

diff --git a/libpod/container_internal_linux_test.go b/libpod/container_internal_linux_test.go
index 1465ffbea..899f9bffd 100644
--- a/libpod/container_internal_linux_test.go
+++ b/libpod/container_internal_linux_test.go
@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package libpod
@@ -7,6 +8,7 @@ import (
 	"os"
 	"testing"
 
+	"github.com/containers/podman/v3/pkg/namespaces"
 	spec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/stretchr/testify/assert"
 )
@@ -68,3 +70,30 @@ func TestGenerateUserGroupEntry(t *testing.T) {
 	}
 	assert.Equal(t, group, "567:x:567:567\n")
 }
+
+func TestAppendLocalhost(t *testing.T) {
+	{
+		c := Container{
+			config: &ContainerConfig{
+				ContainerNetworkConfig: ContainerNetworkConfig{
+					NetMode: namespaces.NetworkMode("slirp4netns"),
+				},
+			},
+		}
+
+		assert.Equal(t, "127.0.0.1\tlocalhost\n::1\tlocalhost\n", c.appendLocalhost(""))
+		assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost"))
+	}
+	{
+		c := Container{
+			config: &ContainerConfig{
+				ContainerNetworkConfig: ContainerNetworkConfig{
+					NetMode: namespaces.NetworkMode("host"),
+				},
+			},
+		}
+
+		assert.Equal(t, "", c.appendLocalhost(""))
+		assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost"))
+	}
+}