Fix container.json sample to be loadable by nsinit.

Docker-DCO-1.1-Signed-off-by: Rohit Jnagal <jnagal@google.com> (github: rjnagal)

libcontainer/container_test.go

@@ -0,0 +1,60 @@
+package libcontainer
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+)
+
+func TestContainerJsonFormat(t *testing.T) {
+	f, err := os.Open("container.json")
+	if err != nil {
+		t.Fatal("Unable to open container.json")
+	}
+	defer f.Close()
+
+	var container *Container
+	if err := json.NewDecoder(f).Decode(&container); err != nil {
+		t.Log("failed to decode container config")
+		t.FailNow()
+	}
+	if container.Hostname != "koye" {
+		t.Log("hostname is not set")
+		t.Fail()
+	}
+
+	if !container.Tty {
+		t.Log("tty should be set to true")
+		t.Fail()
+	}
+
+	if !container.Namespaces.Contains("NEWNET") {
+		t.Log("namespaces should contain NEWNET")
+		t.Fail()
+	}
+
+	if container.Namespaces.Contains("NEWUSER") {
+		t.Log("namespaces should not contain NEWUSER")
+		t.Fail()
+	}
+
+	if !container.CapabilitiesMask.Contains("SYS_ADMIN") {
+		t.Log("capabilities should contain SYS_ADMIN")
+		t.Fail()
+	}
+
+	if container.CapabilitiesMask.Contains("SYS_CHROOT") {
+		t.Log("capabitlies should not contain SYS_CHROOT")
+		t.Fail()
+	}
+
+	if container.Cgroups.CpuShares != 1024 {
+		t.Log("cpu shares not set correctly")
+		t.Fail()
+	}
+
+	if container.Cgroups.Memory != 5248000 {
+		t.Log("memory limit not set correctly")
+		t.Fail()
+	}
+}