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Copy pathcontext_test.go
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359 lines (304 loc) · 6.5 KB
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package terraform
import (
"fmt"
"strings"
"testing"
"time"
"github.com/hashicorp/terraform/flatmap"
)
func TestNewContextState(t *testing.T) {
cases := map[string]struct {
Input *ContextOpts
Err bool
}{
"empty TFVersion": {
&ContextOpts{
State: &State{},
},
false,
},
"past TFVersion": {
&ContextOpts{
State: &State{TFVersion: "0.1.2"},
},
false,
},
"equal TFVersion": {
&ContextOpts{
State: &State{TFVersion: Version},
},
false,
},
"future TFVersion": {
&ContextOpts{
State: &State{TFVersion: "99.99.99"},
},
true,
},
"future TFVersion, allowed": {
&ContextOpts{
State: &State{TFVersion: "99.99.99"},
StateFutureAllowed: true,
},
false,
},
}
for k, tc := range cases {
ctx, err := NewContext(tc.Input)
if (err != nil) != tc.Err {
t.Fatalf("%s: err: %s", k, err)
}
if err != nil {
continue
}
// Version should always be set to our current
if ctx.state.TFVersion != Version {
t.Fatalf("%s: state not set to current version", k)
}
}
}
func testContext2(t *testing.T, opts *ContextOpts) *Context {
// Enable the shadow graph
opts.Shadow = true
ctx, err := NewContext(opts)
if err != nil {
t.Fatalf("err: %s", err)
}
return ctx
}
func testDataApplyFn(
info *InstanceInfo,
d *InstanceDiff) (*InstanceState, error) {
return testApplyFn(info, new(InstanceState), d)
}
func testDataDiffFn(
info *InstanceInfo,
c *ResourceConfig) (*InstanceDiff, error) {
return testDiffFn(info, new(InstanceState), c)
}
func testApplyFn(
info *InstanceInfo,
s *InstanceState,
d *InstanceDiff) (*InstanceState, error) {
if d.Destroy {
return nil, nil
}
id := "foo"
if idAttr, ok := d.Attributes["id"]; ok && !idAttr.NewComputed {
id = idAttr.New
}
result := &InstanceState{
ID: id,
Attributes: make(map[string]string),
}
// Copy all the prior attributes
for k, v := range s.Attributes {
result.Attributes[k] = v
}
if d != nil {
result = result.MergeDiff(d)
}
return result, nil
}
func testDiffFn(
info *InstanceInfo,
s *InstanceState,
c *ResourceConfig) (*InstanceDiff, error) {
diff := new(InstanceDiff)
diff.Attributes = make(map[string]*ResourceAttrDiff)
if s != nil {
diff.DestroyTainted = s.Tainted
}
for k, v := range c.Raw {
if _, ok := v.(string); !ok {
continue
}
// Ignore __-prefixed keys since they're used for magic
if k[0] == '_' && k[1] == '_' {
continue
}
if k == "nil" {
return nil, nil
}
// This key is used for other purposes
if k == "compute_value" {
continue
}
if k == "compute" {
attrDiff := &ResourceAttrDiff{
Old: "",
New: "",
NewComputed: true,
}
if cv, ok := c.Config["compute_value"]; ok {
if cv.(string) == "1" {
attrDiff.NewComputed = false
attrDiff.New = fmt.Sprintf("computed_%s", v.(string))
}
}
diff.Attributes[v.(string)] = attrDiff
continue
}
// If this key is not computed, then look it up in the
// cleaned config.
found := false
for _, ck := range c.ComputedKeys {
if ck == k {
found = true
break
}
}
if !found {
v = c.Config[k]
}
for k, attrDiff := range testFlatAttrDiffs(k, v) {
if k == "require_new" {
attrDiff.RequiresNew = true
}
if _, ok := c.Raw["__"+k+"_requires_new"]; ok {
attrDiff.RequiresNew = true
}
diff.Attributes[k] = attrDiff
}
}
for _, k := range c.ComputedKeys {
diff.Attributes[k] = &ResourceAttrDiff{
Old: "",
NewComputed: true,
}
}
// If we recreate this resource because it's tainted, we keep all attrs
if !diff.RequiresNew() {
for k, v := range diff.Attributes {
if v.NewComputed {
continue
}
old, ok := s.Attributes[k]
if !ok {
continue
}
if old == v.New {
delete(diff.Attributes, k)
}
}
}
if !diff.Empty() {
diff.Attributes["type"] = &ResourceAttrDiff{
Old: "",
New: info.Type,
}
}
return diff, nil
}
// generate ResourceAttrDiffs for nested data structures in tests
func testFlatAttrDiffs(k string, i interface{}) map[string]*ResourceAttrDiff {
diffs := make(map[string]*ResourceAttrDiff)
// check for strings and empty containers first
switch t := i.(type) {
case string:
diffs[k] = &ResourceAttrDiff{New: t}
return diffs
case map[string]interface{}:
if len(t) == 0 {
diffs[k] = &ResourceAttrDiff{New: ""}
return diffs
}
case []interface{}:
if len(t) == 0 {
diffs[k] = &ResourceAttrDiff{New: ""}
return diffs
}
}
flat := flatmap.Flatten(map[string]interface{}{k: i})
for k, v := range flat {
attrDiff := &ResourceAttrDiff{
Old: "",
New: v,
}
diffs[k] = attrDiff
}
return diffs
}
func testProvider(prefix string) *MockResourceProvider {
p := new(MockResourceProvider)
p.RefreshFn = func(info *InstanceInfo, s *InstanceState) (*InstanceState, error) {
return s, nil
}
p.ResourcesReturn = []ResourceType{
ResourceType{
Name: fmt.Sprintf("%s_instance", prefix),
},
}
return p
}
func testProvisioner() *MockResourceProvisioner {
p := new(MockResourceProvisioner)
return p
}
func checkStateString(t *testing.T, state *State, expected string) {
actual := strings.TrimSpace(state.String())
expected = strings.TrimSpace(expected)
if actual != expected {
t.Fatalf("state does not match! actual:\n%s\n\nexpected:\n%s", actual, expected)
}
}
func resourceState(resourceType, resourceID string) *ResourceState {
return &ResourceState{
Type: resourceType,
Primary: &InstanceState{
ID: resourceID,
},
}
}
// Test helper that gives a function 3 seconds to finish, assumes deadlock and
// fails test if it does not.
func testCheckDeadlock(t *testing.T, f func()) {
timeout := make(chan bool, 1)
done := make(chan bool, 1)
go func() {
time.Sleep(3 * time.Second)
timeout <- true
}()
go func(f func(), done chan bool) {
defer func() { done <- true }()
f()
}(f, done)
select {
case <-timeout:
t.Fatalf("timed out! probably deadlock")
case <-done:
// ok
}
}
const testContextGraph = `
root: root
aws_instance.bar
aws_instance.bar -> provider.aws
aws_instance.foo
aws_instance.foo -> provider.aws
provider.aws
root
root -> aws_instance.bar
root -> aws_instance.foo
`
const testContextRefreshModuleStr = `
aws_instance.web: (tainted)
ID = bar
module.child:
aws_instance.web:
ID = new
`
const testContextRefreshOutputStr = `
aws_instance.web:
ID = foo
foo = bar
Outputs:
foo = bar
`
const testContextRefreshOutputPartialStr = `
<no state>
`
const testContextRefreshTaintedStr = `
aws_instance.web: (tainted)
ID = foo
`