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Copy pathgraph_builder_test.go
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357 lines (307 loc) · 7.85 KB
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package terraform
import (
"reflect"
"strings"
"testing"
"github.com/hashicorp/terraform/dag"
)
func TestBasicGraphBuilder_impl(t *testing.T) {
var _ GraphBuilder = new(BasicGraphBuilder)
}
func TestBasicGraphBuilder(t *testing.T) {
b := &BasicGraphBuilder{
Steps: []GraphTransformer{
&testBasicGraphBuilderTransform{1},
},
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
if !reflect.DeepEqual(g.Path, RootModulePath) {
t.Fatalf("bad: %#v", g.Path)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBasicGraphBuilderStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestBasicGraphBuilder_validate(t *testing.T) {
b := &BasicGraphBuilder{
Steps: []GraphTransformer{
&testBasicGraphBuilderTransform{1},
&testBasicGraphBuilderTransform{2},
},
Validate: true,
}
_, err := b.Build(RootModulePath)
if err == nil {
t.Fatal("should error")
}
}
func TestBasicGraphBuilder_validateOff(t *testing.T) {
b := &BasicGraphBuilder{
Steps: []GraphTransformer{
&testBasicGraphBuilderTransform{1},
&testBasicGraphBuilderTransform{2},
},
Validate: false,
}
_, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("expected no error, got: %s", err)
}
}
func TestBuiltinGraphBuilder_impl(t *testing.T) {
var _ GraphBuilder = new(BuiltinGraphBuilder)
}
// This test is not meant to test all the transforms but rather just
// to verify we get some basic sane graph out. Special tests to ensure
// specific ordering of steps should be added in other tests.
func TestBuiltinGraphBuilder(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-basic"),
Validate: true,
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBuiltinGraphBuilderBasicStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestBuiltinGraphBuilder_Verbose(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-basic"),
Validate: true,
Verbose: true,
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBuiltinGraphBuilderVerboseStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
// This tests that the CreateBeforeDestoryTransformer is not present when
// we perform a "terraform destroy" operation. We don't actually do anything
// else.
func TestBuiltinGraphBuilder_CreateBeforeDestroy_Destroy_Bypass(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-basic"),
Validate: true,
Destroy: true,
}
steps := b.Steps([]string{})
actual := false
expected := false
for _, v := range steps {
switch v.(type) {
case *CreateBeforeDestroyTransformer:
actual = true
}
}
if actual != expected {
t.Fatalf("bad: CreateBeforeDestroyTransformer still in root path")
}
}
// This tests that the CreateBeforeDestoryTransformer *is* present
// during a non-destroy operation (ie: Destroy not set).
func TestBuiltinGraphBuilder_CreateBeforeDestroy_NonDestroy_Present(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-basic"),
Validate: true,
}
steps := b.Steps([]string{})
actual := false
expected := true
for _, v := range steps {
switch v.(type) {
case *CreateBeforeDestroyTransformer:
actual = true
}
}
if actual != expected {
t.Fatalf("bad: CreateBeforeDestroyTransformer not in root path")
}
}
// This tests a cycle we got when a CBD resource depends on a non-CBD
// resource. This cycle shouldn't happen in the general case anymore.
func TestBuiltinGraphBuilder_cbdDepNonCbd(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-cbd-non-cbd"),
Validate: true,
}
_, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
}
func TestBuiltinGraphBuilder_cbdDepNonCbd_errorsWhenVerbose(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-cbd-non-cbd"),
Validate: true,
Verbose: true,
}
_, err := b.Build(RootModulePath)
if err == nil {
t.Fatalf("expected err, got none")
}
}
func TestBuiltinGraphBuilder_multiLevelModule(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-multi-level-module"),
Validate: true,
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBuiltinGraphBuilderMultiLevelStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestBuiltinGraphBuilder_orphanDeps(t *testing.T) {
state := &State{
Modules: []*ModuleState{
&ModuleState{
Path: rootModulePath,
Resources: map[string]*ResourceState{
"aws_instance.foo": &ResourceState{
Type: "aws_instance",
Primary: &InstanceState{
ID: "foo",
},
},
"aws_instance.bar": &ResourceState{
Type: "aws_instance",
Dependencies: []string{"aws_instance.foo"},
Primary: &InstanceState{
ID: "bar",
},
},
},
},
},
}
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-orphan-deps"),
State: state,
Validate: true,
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBuiltinGraphBuilderOrphanDepsStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
/*
TODO: This exposes a really bad bug we need to fix after we merge
the f-ast-branch. This bug still exists in master.
// This test tests that the graph builder properly expands modules.
func TestBuiltinGraphBuilder_modules(t *testing.T) {
b := &BuiltinGraphBuilder{
Root: testModule(t, "graph-builder-modules"),
}
g, err := b.Build(RootModulePath)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := strings.TrimSpace(g.String())
expected := strings.TrimSpace(testBuiltinGraphBuilderModuleStr)
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
*/
type testBasicGraphBuilderTransform struct {
V dag.Vertex
}
func (t *testBasicGraphBuilderTransform) Transform(g *Graph) error {
g.Add(t.V)
return nil
}
const testBasicGraphBuilderStr = `
1
`
const testBuiltinGraphBuilderBasicStr = `
aws_instance.db
provider.aws
aws_instance.web
aws_instance.db
provider.aws
provider.aws (close)
aws_instance.web
`
const testBuiltinGraphBuilderVerboseStr = `
aws_instance.db
aws_instance.db (destroy)
aws_instance.db (destroy)
aws_instance.web (destroy)
aws_instance.web
aws_instance.db
aws_instance.web (destroy)
provider.aws
provider.aws
provider.aws (close)
aws_instance.web
`
const testBuiltinGraphBuilderMultiLevelStr = `
module.foo.module.bar.output.value
module.foo.module.bar.var.bar
module.foo.var.foo
module.foo.module.bar.plan-destroy
module.foo.module.bar.var.bar
module.foo.var.foo
module.foo.plan-destroy
module.foo.var.foo
root
module.foo.module.bar.output.value
module.foo.module.bar.plan-destroy
module.foo.module.bar.var.bar
module.foo.plan-destroy
module.foo.var.foo
`
const testBuiltinGraphBuilderOrphanDepsStr = `
aws_instance.bar (orphan)
provider.aws
aws_instance.foo (orphan)
aws_instance.bar (orphan)
provider.aws
provider.aws (close)
aws_instance.foo (orphan)
`
/*
TODO: Commented out this const as it's likely this needs to
be updated when the TestBuiltinGraphBuilder_modules test is
enabled again.
const testBuiltinGraphBuilderModuleStr = `
aws_instance.web
aws_instance.web (destroy)
aws_instance.web (destroy)
aws_security_group.firewall
module.consul (expanded)
provider.aws
aws_security_group.firewall
aws_security_group.firewall (destroy)
aws_security_group.firewall (destroy)
provider.aws
module.consul (expanded)
aws_security_group.firewall
provider.aws
provider.aws
`
*/