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types.variables_test.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package hcl2template
import (
"fmt"
"path/filepath"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/hashicorp/hcl/v2"
packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
"github.com/hashicorp/packer/builder/null"
. "github.com/hashicorp/packer/hcl2template/internal"
"github.com/hashicorp/packer/packer"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/convert"
)
func TestParse_variables(t *testing.T) {
defaultParser := getBasicParser()
tests := []parseTest{
{"basic variables",
defaultParser,
parseTestArgs{"testdata/variables/basic.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{
Type: "null",
Name: "test",
},
},
},
},
},
Sources: map[SourceRef]SourceBlock{
{
Type: "null",
Name: "test",
}: {
Type: "null",
Name: "test",
},
},
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"image_name": &Variable{
Name: "image_name",
Type: cty.String,
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo-image-{{user `my_secret`}}")}},
},
"key": &Variable{
Name: "key",
Type: cty.String,
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("value")}},
},
"my_secret": &Variable{
Name: "my_secret",
Type: cty.String,
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
},
"image_id": &Variable{
Name: "image_id",
Type: cty.String,
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("image-id-default")}},
},
"port": &Variable{
Name: "port",
Type: cty.Number,
Values: []VariableAssignment{{From: "default", Value: cty.NumberIntVal(42)}},
},
"availability_zone_names": &Variable{
Name: "availability_zone_names",
Values: []VariableAssignment{{
From: "default",
Value: cty.ListVal([]cty.Value{
cty.StringVal("us-west-1a"),
}),
}},
Type: cty.List(cty.String),
Description: fmt.Sprintln("Describing is awesome ;D"),
},
"super_secret_password": &Variable{
Name: "super_secret_password",
Sensitive: true,
Values: []VariableAssignment{{
From: "default",
Value: cty.NullVal(cty.String),
}},
Type: cty.String,
Description: fmt.Sprintln("Handle with care plz"),
},
},
LocalVariables: Variables{
"owner": &Variable{
Name: "owner",
Values: []VariableAssignment{{
From: "default",
Value: cty.StringVal("Community Team"),
}},
Type: cty.String,
},
"service_name": &Variable{
Name: "service_name",
Values: []VariableAssignment{{
From: "default",
Value: cty.StringVal("forum"),
}},
Type: cty.String,
},
"supersecret": &Variable{
Name: "supersecret",
Values: []VariableAssignment{{
From: "default",
Value: cty.StringVal("secretvar"),
}},
Type: cty.String,
Sensitive: true,
},
},
},
false, false,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null.test",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"duplicate variable",
defaultParser,
parseTestArgs{"testdata/variables/duplicate_variable.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"boolean_value": &Variable{
Name: "boolean_value",
Values: []VariableAssignment{{
From: "default",
Value: cty.BoolVal(false),
}},
Type: cty.Bool,
},
},
},
true, true,
[]packersdk.Build{},
false,
},
{"duplicate variable in variables",
defaultParser,
parseTestArgs{"testdata/variables/duplicate_variables.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"boolean_value": &Variable{
Name: "boolean_value",
Values: []VariableAssignment{{
From: "default",
Value: cty.BoolVal(false),
}},
Type: cty.Bool,
},
},
},
true, true,
[]packersdk.Build{},
false,
},
{"duplicate local block",
defaultParser,
parseTestArgs{"testdata/variables/duplicate_locals", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: "testdata/variables/duplicate_locals",
LocalVariables: Variables{
"sensible": &Variable{
Values: []VariableAssignment{
{
From: "default",
Value: cty.StringVal("something"),
},
},
Type: cty.String,
Name: "sensible",
},
},
},
true, true,
[]packersdk.Build{},
false,
},
{"invalid default type",
defaultParser,
parseTestArgs{"testdata/variables/invalid_default.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"broken_type": &Variable{
Name: "broken_type",
Values: []VariableAssignment{{
From: "default",
Value: cty.UnknownVal(cty.DynamicPseudoType),
}},
Type: cty.List(cty.String),
},
},
},
true, true,
[]packersdk.Build{},
false,
},
{"unknown key",
defaultParser,
parseTestArgs{"testdata/variables/unknown_key.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"broken_variable": &Variable{
Name: "broken_variable",
Values: []VariableAssignment{{From: "default", Value: cty.BoolVal(true)}},
Type: cty.Bool,
},
},
},
true, true,
[]packersdk.Build{},
false,
},
{"unset used variable",
defaultParser,
parseTestArgs{"testdata/variables/unset_used_string_variable.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"foo": &Variable{
Name: "foo",
Type: cty.String,
},
},
},
true, true,
[]packersdk.Build{},
true,
},
{"unset unused variable",
defaultParser,
parseTestArgs{"testdata/variables/unset_unused_string_variable.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"foo": &Variable{
Name: "foo",
Type: cty.String,
},
},
Sources: map[SourceRef]SourceBlock{
SourceRef{Type: "null", Name: "null-builder"}: SourceBlock{
Name: "null-builder",
Type: "null",
},
},
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{Type: "null", Name: "null-builder"},
},
},
},
},
},
true, true,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"locals within another locals usage in different files",
defaultParser,
parseTestArgs{"testdata/variables/complicated", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{
Type: "null",
Name: "test",
},
},
},
},
},
Sources: map[SourceRef]SourceBlock{
{
Type: "null",
Name: "test",
}: {
Type: "null",
Name: "test",
},
},
Basedir: "testdata/variables/complicated",
InputVariables: Variables{
"name_prefix": &Variable{
Name: "name_prefix",
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
Type: cty.String,
},
},
LocalVariables: Variables{
"name_prefix": &Variable{
Name: "name_prefix",
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
Type: cty.String,
},
"foo": &Variable{
Name: "foo",
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
Type: cty.String,
},
"bar": &Variable{
Name: "bar",
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
Type: cty.String,
},
"for_var": &Variable{
Name: "for_var",
Values: []VariableAssignment{{From: "default", Value: cty.StringVal("foo")}},
Type: cty.String,
},
"bar_var": &Variable{
Name: "bar_var",
Values: []VariableAssignment{{
From: "default",
Value: cty.TupleVal([]cty.Value{
cty.StringVal("foo"),
cty.StringVal("foo"),
cty.StringVal("foo"),
}),
}},
Type: cty.Tuple([]cty.Type{
cty.String,
cty.String,
cty.String,
}),
},
},
},
false, false,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null.test",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"recursive locals",
defaultParser,
parseTestArgs{"testdata/variables/recursive_locals.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
LocalVariables: Variables{},
},
true, true,
[]packersdk.Build{},
false,
},
{"set variable from var-file",
defaultParser,
parseTestArgs{"testdata/variables/foo-string.variable.pkr.hcl", nil, []string{"testdata/variables/set-foo-too-wee.hcl"}},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{
Type: "null",
Name: "test",
},
},
},
},
},
Sources: map[SourceRef]SourceBlock{
{
Type: "null",
Name: "test",
}: {
Type: "null",
Name: "test",
},
},
InputVariables: Variables{
"foo": &Variable{
Name: "foo",
Values: []VariableAssignment{
VariableAssignment{"default", cty.StringVal("bar"), nil},
VariableAssignment{"varfile", cty.StringVal("wee"), nil},
},
Type: cty.String,
},
},
},
false, false,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null.test",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"unknown variable from var-file",
defaultParser,
parseTestArgs{"testdata/variables/empty.pkr.hcl", nil, []string{"testdata/variables/set-foo-too-wee.hcl"}},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{
Type: "null",
Name: "test",
},
},
},
},
},
Sources: map[SourceRef]SourceBlock{
{
Type: "null",
Name: "test",
}: {
Type: "null",
Name: "test",
},
},
Basedir: filepath.Join("testdata", "variables"),
},
false, false,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null.test",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"provisioner variable decoding",
defaultParser,
parseTestArgs{"testdata/variables/provisioner_variable_decoding.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"max_retries": &Variable{
Name: "max_retries",
Values: []VariableAssignment{{"default", cty.StringVal("1"), nil}},
Type: cty.String,
},
"max_retries_int": &Variable{
Name: "max_retries_int",
Values: []VariableAssignment{{"default", cty.NumberIntVal(1), nil}},
Type: cty.Number,
},
},
Sources: map[SourceRef]SourceBlock{
SourceRef{Type: "null", Name: "null-builder"}: SourceBlock{
Name: "null-builder",
Type: "null",
},
},
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{Type: "null", Name: "null-builder"},
},
},
ProvisionerBlocks: []*ProvisionerBlock{
{
PType: "shell",
MaxRetries: 1,
},
{
PType: "shell",
MaxRetries: 1,
},
},
},
},
},
false, false,
[]packersdk.Build{&packer.CoreBuild{
Type: "null.null-builder",
Prepared: true,
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{
{
PType: "shell",
Provisioner: &packer.RetriedProvisioner{
MaxRetries: 1,
Provisioner: &HCL2Provisioner{
Provisioner: &MockProvisioner{
Config: MockConfig{
NestedMockConfig: NestedMockConfig{
Tags: []MockTag{},
},
NestedSlice: []NestedMockConfig{},
},
},
},
},
},
{
PType: "shell",
Provisioner: &packer.RetriedProvisioner{
MaxRetries: 1,
Provisioner: &HCL2Provisioner{
Provisioner: &MockProvisioner{
Config: MockConfig{
NestedMockConfig: NestedMockConfig{
Tags: []MockTag{},
},
NestedSlice: []NestedMockConfig{},
},
},
},
},
},
},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
},
},
false,
},
{"valid validation block",
defaultParser,
parseTestArgs{"testdata/variables/validation/valid.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables", "validation"),
Builds: Builds{
&BuildBlock{
Sources: []SourceUseBlock{
{
SourceRef: SourceRef{
Type: "null",
Name: "test",
},
},
},
},
},
Sources: map[SourceRef]SourceBlock{
{
Type: "null",
Name: "test",
}: {
Type: "null",
Name: "test",
},
},
InputVariables: Variables{
"image_id": &Variable{
Values: []VariableAssignment{
{"default", cty.StringVal("ami-something-something"), nil},
},
Name: "image_id",
Type: cty.String,
Validations: []*VariableValidation{
&VariableValidation{
ErrorMessage: `The image_id value must be a valid AMI id, starting with "ami-".`,
},
},
},
},
},
false, false,
[]packersdk.Build{
&packer.CoreBuild{
Type: "null.test",
Builder: &null.Builder{},
Provisioners: []packer.CoreBuildProvisioner{},
PostProcessors: [][]packer.CoreBuildPostProcessor{},
Prepared: true,
},
},
false,
},
{"valid validation block - invalid default",
defaultParser,
parseTestArgs{"testdata/variables/validation/invalid_default.pkr.hcl", nil, nil},
&PackerConfig{
CorePackerVersionString: lockedVersion,
Basedir: filepath.Join("testdata", "variables", "validation"),
InputVariables: Variables{
"image_id": &Variable{
Values: []VariableAssignment{{"default", cty.StringVal("potato"), nil}},
Name: "image_id",
Type: cty.String,
Validations: []*VariableValidation{
&VariableValidation{
ErrorMessage: `The image_id value must be a valid AMI id, starting with "ami-".`,
},
},
},
},
},
true, true,
nil,
false,
},
}
testParse(t, tests)
}
func TestVariables_collectVariableValues(t *testing.T) {
type args struct {
env []string
hclFiles []string
argv map[string]string
}
tests := []struct {
name string
variables Variables
validationOptions ValidationOptions
args args
wantDiags bool
wantDiagsHasError bool
wantVariables Variables
wantValues map[string]cty.Value
}{
{name: "string",
variables: Variables{"used_string": &Variable{
Values: []VariableAssignment{
{"default", cty.StringVal("default_value"), nil},
},
Type: cty.String,
}},
args: args{
env: []string{`PKR_VAR_used_string=env_value`},
hclFiles: []string{
`used_string="xy"`,
`used_string="varfile_value"`,
},
argv: map[string]string{
"used_string": `cmd_value`,
},
},
// output
wantDiags: false,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.String,
Values: []VariableAssignment{
{"default", cty.StringVal(`default_value`), nil},
{"env", cty.StringVal(`env_value`), nil},
{"varfile", cty.StringVal(`xy`), nil},
{"varfile", cty.StringVal(`varfile_value`), nil},
{"cmd", cty.StringVal(`cmd_value`), nil},
},
},
},
wantValues: map[string]cty.Value{
"used_string": cty.StringVal("cmd_value"),
},
},
{name: "quoted string",
variables: Variables{"quoted_string": &Variable{
Values: []VariableAssignment{
{"default", cty.StringVal(`"default_value"`), nil},
},
Type: cty.String,
}},
args: args{
env: []string{`PKR_VAR_quoted_string="env_value"`},
hclFiles: []string{
`quoted_string="\"xy\""`,
`quoted_string="\"varfile_value\""`,
},
argv: map[string]string{
"quoted_string": `"cmd_value"`,
},
},
// output
wantDiags: false,
wantVariables: Variables{
"quoted_string": &Variable{
Type: cty.String,
Values: []VariableAssignment{
{"default", cty.StringVal(`"default_value"`), nil},
{"env", cty.StringVal(`"env_value"`), nil},
{"varfile", cty.StringVal(`"xy"`), nil},
{"varfile", cty.StringVal(`"varfile_value"`), nil},
{"cmd", cty.StringVal(`"cmd_value"`), nil},
},
},
},
wantValues: map[string]cty.Value{
"quoted_string": cty.StringVal(`"cmd_value"`),
},
},
{name: "array of strings",
variables: Variables{"used_strings": &Variable{
Values: []VariableAssignment{
{"default", stringListVal("default_value_1"), nil},
},
Type: cty.List(cty.String),
}},
args: args{
env: []string{`PKR_VAR_used_strings=["env_value_1", "env_value_2"]`},
hclFiles: []string{
`used_strings=["xy"]`,
`used_strings=["varfile_value_1"]`,
},
argv: map[string]string{
"used_strings": `["cmd_value_1"]`,
},
},
// output
wantDiags: false,
wantVariables: Variables{
"used_strings": &Variable{
Type: cty.List(cty.String),
Values: []VariableAssignment{
{"default", stringListVal("default_value_1"), nil},
{"env", stringListVal("env_value_1", "env_value_2"), nil},
{"varfile", stringListVal("xy"), nil},
{"varfile", stringListVal("varfile_value_1"), nil},
{"cmd", stringListVal("cmd_value_1"), nil},
},
},
},
wantValues: map[string]cty.Value{
"used_strings": stringListVal("cmd_value_1"),
},
},
{name: "bool",
variables: Variables{"enabled": &Variable{
Values: []VariableAssignment{{"default", cty.False, nil}},
Type: cty.Bool,
}},
args: args{
env: []string{`PKR_VAR_enabled=true`},
hclFiles: []string{
`enabled="false"`,
},
argv: map[string]string{
"enabled": `true`,
},
},
// output
wantDiags: false,
wantVariables: Variables{
"enabled": &Variable{
Type: cty.Bool,
Values: []VariableAssignment{
{"default", cty.False, nil},
{"env", cty.True, nil},
{"varfile", cty.False, nil},
{"cmd", cty.True, nil},
},
},
},
wantValues: map[string]cty.Value{
"enabled": cty.True,
},
},
{name: "invalid env var",
variables: Variables{"used_string": &Variable{
Values: []VariableAssignment{{"default", cty.StringVal("default_value"), nil}},
Type: cty.String,
}},
args: args{
env: []string{`PKR_VAR_used_string`},
},
// output
wantDiags: false,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.String,
Values: []VariableAssignment{{"default", cty.StringVal("default_value"), nil}},
},
},
wantValues: map[string]cty.Value{
"used_string": cty.StringVal("default_value"),
},
},
{name: "undefined but set value - pkrvar file - normal mode",
variables: Variables{},
args: args{
hclFiles: []string{`undefined_string="value"`},
},
// output
wantDiags: false,
wantDiagsHasError: false,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
{name: "undefined but set value - pkrvar file - strict mode",
variables: Variables{},
validationOptions: ValidationOptions{
WarnOnUndeclaredVar: true,
},
args: args{
hclFiles: []string{`undefined_string="value"`},
},
// output
wantDiags: true,
wantDiagsHasError: false,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
{name: "undefined but set value - env",
variables: Variables{},
args: args{
env: []string{`PKR_VAR_undefined_string=value`},
},
// output
wantDiags: false,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
{name: "undefined but set value - argv",
variables: Variables{},
args: args{
argv: map[string]string{
"undefined_string": "value",
},
},
// output
wantDiags: true,
wantDiagsHasError: true,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
{name: "value not corresponding to type - env",
variables: Variables{
"used_string": &Variable{
Type: cty.List(cty.String),
},
},
args: args{
env: []string{`PKR_VAR_used_string="string"`},
},
// output
wantDiags: true,
wantDiagsHasError: true,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.List(cty.String),
Values: []VariableAssignment{{"env", cty.DynamicVal, nil}},
},
},
wantValues: map[string]cty.Value{
"used_string": cty.DynamicVal,
},
},
{name: "value not corresponding to type - cfg file",
variables: Variables{
"used_string": &Variable{
Type: cty.Bool,
},
},
args: args{
hclFiles: []string{`used_string=["string"]`},
},
// output
wantDiags: true,
wantDiagsHasError: true,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.Bool,
Values: []VariableAssignment{{"varfile", cty.DynamicVal, nil}},
},
},
wantValues: map[string]cty.Value{
"used_string": cty.DynamicVal,
},
},
{name: "value not corresponding to type - argv",
variables: Variables{
"used_string": &Variable{
Type: cty.Bool,
},
},
args: args{
argv: map[string]string{
"used_string": `["true"]`,
},
},
// output
wantDiags: true,
wantDiagsHasError: true,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.Bool,
Values: []VariableAssignment{{"cmd", cty.DynamicVal, nil}},
},
},
wantValues: map[string]cty.Value{
"used_string": cty.DynamicVal,
},
},
{name: "defining a variable block in a variables file is invalid ",
variables: Variables{},
args: args{
hclFiles: []string{`variable "something" {}`},
},
// output
wantDiags: true,
wantDiagsHasError: true,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var files []*hcl.File
parser := getBasicParser()
for i, hclContent := range tt.args.hclFiles {
file, diags := parser.ParseHCL([]byte(hclContent), fmt.Sprintf("test_file_%d_*"+hcl2AutoVarFileExt, i))
if diags != nil {
t.Fatalf("ParseHCLFile %d: %v", i, diags)
}