terraform/helper/diff/resource_builder_test.go

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package diff
import (
"testing"
"github.com/hashicorp/terraform/config/hcl2shim"
"github.com/hashicorp/terraform/terraform"
)
func TestResourceBuilder_attrSetComputed(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeCreate,
},
ComputedAttrs: []string{
"foo",
},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "bar",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("diff shold not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBAttrSetComputedDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_attrSetComputedComplex(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeCreate,
},
ComputedAttrs: []string{
"foo",
},
}
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state := &terraform.InstanceState{
ID: "foo",
Attributes: map[string]string{
"foo.#": "0",
},
}
c := testConfig(t, map[string]interface{}{}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff != nil {
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t.Fatalf("diff shold be nil: %#v", diff)
}
}
func TestResourceBuilder_replaceComputed(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeCreate,
},
ComputedAttrs: []string{
"foo",
},
}
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state := &terraform.InstanceState{
ID: "foo",
Attributes: map[string]string{
"foo": "bar",
},
}
c := testConfig(t, nil, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff != nil {
t.Fatalf("should be nil: %#v", diff)
}
}
func TestResourceBuilder_complex(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"listener": AttrTypeUpdate,
},
}
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state := &terraform.InstanceState{
ID: "foo",
Attributes: map[string]string{
"ignore": "1",
"listener.#": "1",
"listener.0.port": "80",
},
}
c := testConfig(t, map[string]interface{}{
"listener": []interface{}{
map[interface{}]interface{}{
"port": 3000,
},
},
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBComplexDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
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func TestResourceBuilder_complexReplace(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"listener": AttrTypeUpdate,
},
}
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state := &terraform.InstanceState{
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ID: "foo",
Attributes: map[string]string{
"ignore": "1",
"listener.#": "1",
"listener.0.port": "80",
},
}
c := testConfig(t, map[string]interface{}{
"listener": []interface{}{
map[interface{}]interface{}{
"value": "50",
},
},
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBComplexReplaceDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
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func TestResourceBuilder_computedAttrsUpdate(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeUpdate,
},
ComputedAttrsUpdate: []string{
"bar",
},
}
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state := &terraform.InstanceState{
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Attributes: map[string]string{"foo": "foo"},
}
c := testConfig(t, map[string]interface{}{
"foo": "bar",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("diff shold not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBComputedAttrUpdate
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_new(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeUpdate,
},
ComputedAttrs: []string{"private_ip"},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "bar",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBNewDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_preProcess(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeCreate,
},
PreProcess: map[string]PreProcessFunc{
"foo": func(v string) string {
return "bar" + v
},
},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "foo",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("diff shold not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBPreProcessDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
actual = diff.Attributes["foo"].NewExtra.(string)
expected = "foo"
if actual != expected {
t.Fatalf("bad: %#v", actual)
}
}
func TestResourceBuilder_preProcessUnknown(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeCreate,
},
PreProcess: map[string]PreProcessFunc{
"foo": func(string) string {
return "bar"
},
},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "${var.unknown}",
}, map[string]string{
"var.unknown": hcl2shim.UnknownVariableValue,
})
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("diff shold not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBPreProcessUnknownDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_requiresNew(t *testing.T) {
rb := &ResourceBuilder{
ComputedAttrs: []string{"private_ip"},
Attrs: map[string]AttrType{
"ami": AttrTypeCreate,
},
}
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state := &terraform.InstanceState{
ID: "1",
Attributes: map[string]string{
"ami": "foo",
"private_ip": "127.0.0.1",
},
}
c := testConfig(t, map[string]interface{}{
"ami": "bar",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBRequiresNewDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_same(t *testing.T) {
rb := &ResourceBuilder{
ComputedAttrs: []string{"private_ip"},
}
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state := &terraform.InstanceState{
ID: "1",
Attributes: map[string]string{
"foo": "bar",
},
}
c := testConfig(t, map[string]interface{}{
"foo": "bar",
}, nil)
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff != nil {
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t.Fatalf("should not diff: %#v", diff)
}
}
func TestResourceBuilder_unknown(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeUpdate,
},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "${var.unknown}",
}, map[string]string{
"var.foo": "bar",
"var.unknown": hcl2shim.UnknownVariableValue,
})
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBUnknownDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
func TestResourceBuilder_vars(t *testing.T) {
rb := &ResourceBuilder{
Attrs: map[string]AttrType{
"foo": AttrTypeUpdate,
},
}
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state := &terraform.InstanceState{}
c := testConfig(t, map[string]interface{}{
"foo": "${var.foo}",
}, map[string]string{
"var.foo": "bar",
})
diff, err := rb.Diff(state, c)
if err != nil {
t.Fatalf("err: %s", err)
}
if diff == nil {
t.Fatal("should not be nil")
}
actual := testResourceDiffStr(diff)
expected := testRBVarsDiff
if actual != expected {
t.Fatalf("bad: %s", actual)
}
}
const testRBAttrSetComputedDiff = `CREATE
IN foo: "" => "bar" (forces new resource)
`
const testRBComplexDiff = `UPDATE
IN listener.0.port: "80" => "3000"
`
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const testRBComplexReplaceDiff = `UPDATE
IN listener.0.port: "80" => "<removed>"
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IN listener.0.value: "" => "50"
`
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const testRBComputedAttrUpdate = `UPDATE
OUT bar: "" => "<computed>"
IN foo: "foo" => "bar"
`
const testRBNewDiff = `UPDATE
IN foo: "" => "bar"
OUT private_ip: "" => "<computed>"
`
const testRBPreProcessDiff = `CREATE
IN foo: "" => "barfoo" (forces new resource)
`
const testRBPreProcessUnknownDiff = `CREATE
IN foo: "" => "${var.unknown}" (forces new resource)
`
const testRBRequiresNewDiff = `CREATE
IN ami: "foo" => "bar" (forces new resource)
OUT private_ip: "127.0.0.1" => "<computed>"
`
const testRBUnknownDiff = `UPDATE
IN foo: "" => "${var.unknown}"
`
const testRBVarsDiff = `UPDATE
IN foo: "" => "bar"
`