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container_graph_test.go
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package libpod
import (
"testing"
"github.com/containers/podman/v4/libpod/lock"
"github.com/stretchr/testify/assert"
)
func TestBuildContainerGraphNoCtrsIsEmpty(t *testing.T) {
graph, err := BuildContainerGraph([]*Container{})
assert.NoError(t, err)
assert.Equal(t, 0, len(graph.nodes))
assert.Equal(t, 0, len(graph.noDepNodes))
assert.Equal(t, 0, len(graph.notDependedOnNodes))
}
func TestBuildContainerGraphOneCtr(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
graph, err := BuildContainerGraph([]*Container{ctr1})
assert.NoError(t, err)
assert.Equal(t, 1, len(graph.nodes))
assert.Equal(t, 1, len(graph.noDepNodes))
assert.Equal(t, 1, len(graph.notDependedOnNodes))
node, ok := graph.nodes[ctr1.ID()]
assert.True(t, ok)
assert.Equal(t, ctr1.ID(), node.id)
assert.Equal(t, ctr1.ID(), graph.noDepNodes[0].id)
assert.Equal(t, ctr1.ID(), graph.notDependedOnNodes[ctr1.ID()].id)
}
func TestBuildContainerGraphTwoCtrNoEdge(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2})
assert.NoError(t, err)
assert.Equal(t, 2, len(graph.nodes))
assert.Equal(t, 2, len(graph.noDepNodes))
assert.Equal(t, 2, len(graph.notDependedOnNodes))
node1, ok := graph.nodes[ctr1.ID()]
assert.True(t, ok)
assert.Equal(t, ctr1.ID(), node1.id)
node2, ok := graph.nodes[ctr2.ID()]
assert.True(t, ok)
assert.Equal(t, ctr2.ID(), node2.id)
}
func TestBuildContainerGraphTwoCtrOneEdge(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr2.config.UserNsCtr = ctr1.config.ID
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2})
assert.NoError(t, err)
assert.Equal(t, 2, len(graph.nodes))
assert.Equal(t, 1, len(graph.noDepNodes))
assert.Equal(t, 1, len(graph.notDependedOnNodes))
assert.Equal(t, ctr1.ID(), graph.noDepNodes[0].id)
assert.Equal(t, ctr2.ID(), graph.notDependedOnNodes[ctr2.ID()].id)
}
func TestBuildContainerGraphTwoCtrCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr2.config.UserNsCtr = ctr1.config.ID
ctr1.config.NetNsCtr = ctr2.config.ID
_, err = BuildContainerGraph([]*Container{ctr1, ctr2})
assert.Error(t, err)
}
func TestBuildContainerGraphThreeCtrNoEdges(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2, ctr3})
assert.NoError(t, err)
assert.Equal(t, 3, len(graph.nodes))
assert.Equal(t, 3, len(graph.noDepNodes))
assert.Equal(t, 3, len(graph.notDependedOnNodes))
node1, ok := graph.nodes[ctr1.ID()]
assert.True(t, ok)
assert.Equal(t, ctr1.ID(), node1.id)
node2, ok := graph.nodes[ctr2.ID()]
assert.True(t, ok)
assert.Equal(t, ctr2.ID(), node2.id)
node3, ok := graph.nodes[ctr3.ID()]
assert.True(t, ok)
assert.Equal(t, ctr3.ID(), node3.id)
}
func TestBuildContainerGraphThreeContainersTwoInCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr1.config.UserNsCtr = ctr2.config.ID
ctr2.config.IPCNsCtr = ctr1.config.ID
_, err = BuildContainerGraph([]*Container{ctr1, ctr2, ctr3})
assert.Error(t, err)
}
func TestBuildContainerGraphThreeContainersCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr1.config.UserNsCtr = ctr2.config.ID
ctr2.config.IPCNsCtr = ctr3.config.ID
ctr3.config.NetNsCtr = ctr1.config.ID
_, err = BuildContainerGraph([]*Container{ctr1, ctr2, ctr3})
assert.Error(t, err)
}
func TestBuildContainerGraphThreeContainersNoCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr1.config.UserNsCtr = ctr2.config.ID
ctr1.config.NetNsCtr = ctr3.config.ID
ctr2.config.IPCNsCtr = ctr3.config.ID
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2, ctr3})
assert.NoError(t, err)
assert.Equal(t, 3, len(graph.nodes))
assert.Equal(t, 1, len(graph.noDepNodes))
assert.Equal(t, 1, len(graph.notDependedOnNodes))
assert.Equal(t, ctr3.ID(), graph.noDepNodes[0].id)
assert.Equal(t, ctr1.ID(), graph.notDependedOnNodes[ctr1.ID()].id)
}
func TestBuildContainerGraphFourContainersNoEdges(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr4, err := getTestCtrN("4", manager)
assert.NoError(t, err)
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2, ctr3, ctr4})
assert.NoError(t, err)
assert.Equal(t, 4, len(graph.nodes))
assert.Equal(t, 4, len(graph.noDepNodes))
assert.Equal(t, 4, len(graph.notDependedOnNodes))
node1, ok := graph.nodes[ctr1.ID()]
assert.True(t, ok)
assert.Equal(t, ctr1.ID(), node1.id)
node2, ok := graph.nodes[ctr2.ID()]
assert.True(t, ok)
assert.Equal(t, ctr2.ID(), node2.id)
node3, ok := graph.nodes[ctr3.ID()]
assert.True(t, ok)
assert.Equal(t, ctr3.ID(), node3.id)
node4, ok := graph.nodes[ctr4.ID()]
assert.True(t, ok)
assert.Equal(t, ctr4.ID(), node4.id)
}
func TestBuildContainerGraphFourContainersTwoInCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr4, err := getTestCtrN("4", manager)
assert.NoError(t, err)
ctr1.config.IPCNsCtr = ctr2.config.ID
ctr2.config.UserNsCtr = ctr1.config.ID
_, err = BuildContainerGraph([]*Container{ctr1, ctr2, ctr3, ctr4})
assert.Error(t, err)
}
func TestBuildContainerGraphFourContainersAllInCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr4, err := getTestCtrN("4", manager)
assert.NoError(t, err)
ctr1.config.IPCNsCtr = ctr2.config.ID
ctr2.config.UserNsCtr = ctr3.config.ID
ctr3.config.NetNsCtr = ctr4.config.ID
ctr4.config.UTSNsCtr = ctr1.config.ID
_, err = BuildContainerGraph([]*Container{ctr1, ctr2, ctr3, ctr4})
assert.Error(t, err)
}
func TestBuildContainerGraphFourContainersNoneInCycle(t *testing.T) {
manager, err := lock.NewInMemoryManager(16)
if err != nil {
t.Fatalf("Error setting up locks: %v", err)
}
ctr1, err := getTestCtr1(manager)
assert.NoError(t, err)
ctr2, err := getTestCtr2(manager)
assert.NoError(t, err)
ctr3, err := getTestCtrN("3", manager)
assert.NoError(t, err)
ctr4, err := getTestCtrN("4", manager)
assert.NoError(t, err)
ctr1.config.IPCNsCtr = ctr2.config.ID
ctr1.config.NetNsCtr = ctr3.config.ID
ctr2.config.UserNsCtr = ctr3.config.ID
graph, err := BuildContainerGraph([]*Container{ctr1, ctr2, ctr3, ctr4})
assert.NoError(t, err)
assert.Equal(t, 4, len(graph.nodes))
assert.Equal(t, 2, len(graph.noDepNodes))
assert.Equal(t, 2, len(graph.notDependedOnNodes))
}