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hcl/decoder_test.go
James Nugent 3ad5dd62fd Add support for indented HEREDOC terminators 
This PR adds support for the style of HEREDOC often used in Ruby which
allows the terminating marker to be indented if the HEREDOC is started
with the sequence "<<-" rather than the usual "<<". This allows users to
express documents with more natural indentation:

resource "template_file" "test" {
    template = <<-HEREDOC
        First Line
        Second Line
    HEREDOC
}

Note that this does not attempt to add any semantics around removing
hanging indent from the actual text of the document, so extra
indentation would still be present. We could make use of the canonical
style for HCL herre to remove the hanging indent in the style of Ruby
which would probably be more predictable for users.
2016-03-21 14:12:20 +00:00

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package hcl
import (
"io/ioutil"
"path/filepath"
"reflect"
"testing"
"github.com/hashicorp/hcl/hcl/ast"
"github.com/hashicorp/hcl/testhelper"
)
func TestDecode_interface(t *testing.T) {
cases := []struct {
File string
Err bool
Out interface{}
}{
{
"basic.hcl",
false,
map[string]interface{}{
"foo": "bar",
"bar": "${file(\"bing/bong.txt\")}",
},
},
{
"basic_squish.hcl",
false,
map[string]interface{}{
"foo": "bar",
"bar": "${file(\"bing/bong.txt\")}",
"foo-bar": "baz",
},
},
{
"empty.hcl",
false,
map[string]interface{}{
"resource": []map[string]interface{}{
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{},
},
},
},
},
},
{
"tfvars.hcl",
false,
map[string]interface{}{
"regularvar": "Should work",
"map.key1": "Value",
"map.key2": "Other value",
},
},
{
"escape.hcl",
false,
map[string]interface{}{
"foo": "bar\"baz\\n",
},
},
{
"interpolate_escape.hcl",
false,
map[string]interface{}{
"foo": "${file(\"bing/bong.txt\")}",
},
},
{
"float.hcl",
false,
map[string]interface{}{
"a": 1.02,
},
},
{
"multiline_bad.hcl",
true,
nil,
},
{
"multiline_no_marker.hcl",
true,
nil,
},
{
"multiline.hcl",
false,
map[string]interface{}{"foo": testhelper.Unix2dos("bar\nbaz\n")},
},
{
"multiline_indented.hcl",
false,
map[string]interface{}{"foo": " bar\n baz\n"},
},
{
"multiline_no_eof.hcl",
false,
map[string]interface{}{"foo": testhelper.Unix2dos("bar\nbaz\n"), "key": "value"},
},
{
"multiline.json",
false,
map[string]interface{}{"foo": "bar\nbaz"},
},
{
"scientific.json",
false,
map[string]interface{}{
"a": 1e-10,
"b": 1e+10,
"c": 1e10,
"d": 1.2e-10,
"e": 1.2e+10,
"f": 1.2e10,
},
},
{
"scientific.hcl",
false,
map[string]interface{}{
"a": 1e-10,
"b": 1e+10,
"c": 1e10,
"d": 1.2e-10,
"e": 1.2e+10,
"f": 1.2e10,
},
},
{
"terraform_heroku.hcl",
false,
map[string]interface{}{
"name": "terraform-test-app",
"config_vars": []map[string]interface{}{
map[string]interface{}{
"FOO": "bar",
},
},
},
},
{
"structure_multi.hcl",
false,
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"baz": []map[string]interface{}{
map[string]interface{}{"key": 7},
},
},
map[string]interface{}{
"bar": []map[string]interface{}{
map[string]interface{}{"key": 12},
},
},
},
},
},
{
"structure_multi.json",
false,
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"baz": []map[string]interface{}{
map[string]interface{}{"key": 7},
},
},
map[string]interface{}{
"bar": []map[string]interface{}{
map[string]interface{}{"key": 12},
},
},
},
},
},
{
"structure_list.hcl",
false,
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"key": 7,
},
map[string]interface{}{
"key": 12,
},
},
},
},
{
"structure_list.json",
false,
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"key": 7,
},
map[string]interface{}{
"key": 12,
},
},
},
},
{
"structure_list_deep.json",
false,
map[string]interface{}{
"bar": []map[string]interface{}{
map[string]interface{}{
"foo": []map[string]interface{}{
map[string]interface{}{
"name": "terraform_example",
"ingress": []map[string]interface{}{
map[string]interface{}{
"from_port": 22,
},
map[string]interface{}{
"from_port": 80,
},
},
},
},
},
},
},
},
{
"nested_block_comment.hcl",
false,
map[string]interface{}{
"bar": "value",
},
},
{
"unterminated_block_comment.hcl",
true,
nil,
},
{
"unterminated_brace.hcl",
true,
nil,
},
{
"nested_provider_bad.hcl",
true,
// This is not ideal but without significant rework of the decoder
// we get a partial result back as well as an error.
map[string]interface{}{},
},
{
"object_list.json",
false,
map[string]interface{}{
"resource": []map[string]interface{}{
map[string]interface{}{
"aws_instance": []map[string]interface{}{
map[string]interface{}{
"db": []map[string]interface{}{
map[string]interface{}{
"vpc": "foo",
"provisioner": []map[string]interface{}{
map[string]interface{}{
"file": []map[string]interface{}{
map[string]interface{}{
"source": "foo",
"destination": "bar",
},
},
},
},
},
},
},
},
},
},
},
},
}
for _, tc := range cases {
t.Logf("Testing: %s", tc.File)
d, err := ioutil.ReadFile(filepath.Join(fixtureDir, tc.File))
if err != nil {
t.Fatalf("err: %s", err)
}
var out interface{}
err = Decode(&out, string(d))
if (err != nil) != tc.Err {
t.Fatalf("Input: %s\n\nError: %s", tc.File, err)
}
if !reflect.DeepEqual(out, tc.Out) {
t.Fatalf("Input: %s. Actual, Expected.\n\n%#v\n\n%#v", tc.File, out, tc.Out)
}
var v interface{}
err = Unmarshal(d, &v)
if (err != nil) != tc.Err {
t.Fatalf("Input: %s\n\nError: %s", tc.File, err)
}
if !reflect.DeepEqual(v, tc.Out) {
t.Fatalf("Input: %s. Actual, Expected.\n\n%#v\n\n%#v", tc.File, out, tc.Out)
}
}
}
func TestDecode_equal(t *testing.T) {
cases := []struct {
One, Two string
}{
{
"basic.hcl",
"basic.json",
},
{
"float.hcl",
"float.json",
},
/*
{
"structure.hcl",
"structure.json",
},
*/
{
"structure.hcl",
"structure_flat.json",
},
{
"terraform_heroku.hcl",
"terraform_heroku.json",
},
}
for _, tc := range cases {
p1 := filepath.Join(fixtureDir, tc.One)
p2 := filepath.Join(fixtureDir, tc.Two)
d1, err := ioutil.ReadFile(p1)
if err != nil {
t.Fatalf("err: %s", err)
}
d2, err := ioutil.ReadFile(p2)
if err != nil {
t.Fatalf("err: %s", err)
}
var i1, i2 interface{}
err = Decode(&i1, string(d1))
if err != nil {
t.Fatalf("err: %s", err)
}
err = Decode(&i2, string(d2))
if err != nil {
t.Fatalf("err: %s", err)
}
if !reflect.DeepEqual(i1, i2) {
t.Fatalf(
"%s != %s\n\n%#v\n\n%#v",
tc.One, tc.Two,
i1, i2)
}
}
}
func TestDecode_flatMap(t *testing.T) {
var val map[string]map[string]string
err := Decode(&val, testReadFile(t, "structure_flatmap.hcl"))
if err != nil {
t.Fatalf("err: %s", err)
}
expected := map[string]map[string]string{
"foo": map[string]string{
"foo": "bar",
"key": "7",
},
}
if !reflect.DeepEqual(val, expected) {
t.Fatalf("Actual: %#v\n\nExpected: %#v", val, expected)
}
}
func TestDecode_structure(t *testing.T) {
type V struct {
Key int
Foo string
}
var actual V
err := Decode(&actual, testReadFile(t, "flat.hcl"))
if err != nil {
t.Fatalf("err: %s", err)
}
expected := V{
Key: 7,
Foo: "bar",
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("Actual: %#v\n\nExpected: %#v", actual, expected)
}
}
func TestDecode_structurePtr(t *testing.T) {
type V struct {
Key int
Foo string
}
var actual *V
err := Decode(&actual, testReadFile(t, "flat.hcl"))
if err != nil {
t.Fatalf("err: %s", err)
}
expected := &V{
Key: 7,
Foo: "bar",
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("Actual: %#v\n\nExpected: %#v", actual, expected)
}
}
func TestDecode_structureArray(t *testing.T) {
// This test is extracted from a failure in Consul (consul.io),
// hence the interesting structure naming.
type KeyPolicyType string
type KeyPolicy struct {
Prefix string `hcl:",key"`
Policy KeyPolicyType
}
type Policy struct {
Keys []KeyPolicy `hcl:"key,expand"`
}
expected := Policy{
Keys: []KeyPolicy{
KeyPolicy{
Prefix: "",
Policy: "read",
},
KeyPolicy{
Prefix: "foo/",
Policy: "write",
},
KeyPolicy{
Prefix: "foo/bar/",
Policy: "read",
},
KeyPolicy{
Prefix: "foo/bar/baz",
Policy: "deny",
},
},
}
files := []string{
"decode_policy.hcl",
"decode_policy.json",
}
for _, f := range files {
var actual Policy
err := Decode(&actual, testReadFile(t, f))
if err != nil {
t.Fatalf("Input: %s\n\nerr: %s", f, err)
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("Input: %s\n\nActual: %#v\n\nExpected: %#v", f, actual, expected)
}
}
}
func TestDecode_sliceExpand(t *testing.T) {
type testInner struct {
Name string `hcl:",key"`
Key string
}
type testStruct struct {
Services []testInner `hcl:"service,expand"`
}
expected := testStruct{
Services: []testInner{
testInner{
Name: "my-service-0",
Key: "value",
},
testInner{
Name: "my-service-1",
Key: "value",
},
},
}
files := []string{
"slice_expand.hcl",
}
for _, f := range files {
t.Logf("Testing: %s", f)
var actual testStruct
err := Decode(&actual, testReadFile(t, f))
if err != nil {
t.Fatalf("Input: %s\n\nerr: %s", f, err)
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("Input: %s\n\nActual: %#v\n\nExpected: %#v", f, actual, expected)
}
}
}
func TestDecode_structureMap(t *testing.T) {
// This test is extracted from a failure in Terraform (terraform.io),
// hence the interesting structure naming.
type hclVariable struct {
Default interface{}
Description string
Fields []string `hcl:",decodedFields"`
}
type rawConfig struct {
Variable map[string]hclVariable
}
expected := rawConfig{
Variable: map[string]hclVariable{
"foo": hclVariable{
Default: "bar",
Description: "bar",
Fields: []string{"Default", "Description"},
},
"amis": hclVariable{
Default: []map[string]interface{}{
map[string]interface{}{
"east": "foo",
},
},
Fields: []string{"Default"},
},
},
}
files := []string{
"decode_tf_variable.hcl",
"decode_tf_variable.json",
}
for _, f := range files {
t.Logf("Testing: %s", f)
var actual rawConfig
err := Decode(&actual, testReadFile(t, f))
if err != nil {
t.Fatalf("Input: %s\n\nerr: %s", f, err)
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("Input: %s\n\nActual: %#v\n\nExpected: %#v", f, actual, expected)
}
}
}
func TestDecode_interfaceNonPointer(t *testing.T) {
var value interface{}
err := Decode(value, testReadFile(t, "basic_int_string.hcl"))
if err == nil {
t.Fatal("should error")
}
}
func TestDecode_intString(t *testing.T) {
var value struct {
Count int
}
err := Decode(&value, testReadFile(t, "basic_int_string.hcl"))
if err != nil {
t.Fatalf("err: %s", err)
}
if value.Count != 3 {
t.Fatalf("bad: %#v", value.Count)
}
}
func TestDecode_Node(t *testing.T) {
// given
var value struct {
Content ast.Node
Nested struct {
Content ast.Node
}
}
content := `
content {
hello = "world"
}
`
// when
err := Decode(&value, content)
// then
if err != nil {
t.Errorf("unable to decode content, %v", err)
return
}
// verify ast.Node can be decoded later
var v map[string]interface{}
err = DecodeObject(&v, value.Content)
if err != nil {
t.Errorf("unable to decode content, %v", err)
return
}
if v["hello"] != "world" {
t.Errorf("expected mapping to be returned")
}
}
func TestDecode_NestedNode(t *testing.T) {
// given
var value struct {
Nested struct {
Content ast.Node
}
}
content := `
nested "content" {
hello = "world"
}
`
// when
err := Decode(&value, content)
// then
if err != nil {
t.Errorf("unable to decode content, %v", err)
return
}
// verify ast.Node can be decoded later
var v map[string]interface{}
err = DecodeObject(&v, value.Nested.Content)
if err != nil {
t.Errorf("unable to decode content, %v", err)
return
}
if v["hello"] != "world" {
t.Errorf("expected mapping to be returned")
}
}
// https://github.com/hashicorp/hcl/issues/60
func TestDecode_topLevelKeys(t *testing.T) {
type Template struct {
Source string
}
templates := struct {
Templates []*Template `hcl:"template"`
}{}
err := Decode(&templates, `
template {
source = "blah"
}
template {
source = "blahblah"
}`)
if err != nil {
t.Fatal(err)
}
if templates.Templates[0].Source != "blah" {
t.Errorf("bad source: %s", templates.Templates[0].Source)
}
if templates.Templates[1].Source != "blahblah" {
t.Errorf("bad source: %s", templates.Templates[1].Source)
}
}
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