packer-cn/hcl2template/types.variables_test.go

638 lines
16 KiB
Go

package hcl2template
import (
"fmt"
"path/filepath"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/convert"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/packer/builder/null"
"github.com/hashicorp/packer/packer"
)
func TestParse_variables(t *testing.T) {
defaultParser := getBasicParser()
tests := []parseTest{
{"basic variables",
defaultParser,
parseTestArgs{"testdata/variables/basic.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"image_name": &Variable{
Name: "image_name",
DefaultValue: cty.StringVal("foo-image-{{user `my_secret`}}"),
},
"key": &Variable{
Name: "key",
DefaultValue: cty.StringVal("value"),
},
"my_secret": &Variable{
Name: "my_secret",
DefaultValue: cty.StringVal("foo"),
},
"image_id": &Variable{
Name: "image_id",
DefaultValue: cty.StringVal("image-id-default"),
},
"port": &Variable{
Name: "port",
DefaultValue: cty.NumberIntVal(42),
},
"availability_zone_names": &Variable{
Name: "availability_zone_names",
DefaultValue: cty.ListVal([]cty.Value{
cty.StringVal("us-west-1a"),
}),
Description: fmt.Sprintln("Describing is awesome ;D"),
},
"super_secret_password": &Variable{
Name: "super_secret_password",
Sensitive: true,
DefaultValue: cty.NullVal(cty.String),
Description: fmt.Sprintln("Handle with care plz"),
},
},
LocalVariables: Variables{
"owner": &Variable{
Name: "owner",
DefaultValue: cty.StringVal("Community Team"),
},
"service_name": &Variable{
Name: "service_name",
DefaultValue: cty.StringVal("forum"),
},
},
},
false, false,
[]packer.Build{},
false,
},
{"duplicate variable",
defaultParser,
parseTestArgs{"testdata/variables/duplicate_variable.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"boolean_value": &Variable{
Name: "boolean_value",
},
},
},
true, true,
[]packer.Build{},
false,
},
{"duplicate variable in variables",
defaultParser,
parseTestArgs{"testdata/variables/duplicate_variables.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"boolean_value": &Variable{
Name: "boolean_value",
},
},
},
true, true,
[]packer.Build{},
false,
},
{"invalid default type",
defaultParser,
parseTestArgs{"testdata/variables/invalid_default.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"broken_type": &Variable{
Name: "broken_type",
},
},
},
true, true,
[]packer.Build{},
false,
},
{"unknown key",
defaultParser,
parseTestArgs{"testdata/variables/unknown_key.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"broken_variable": &Variable{
Name: "broken_variable",
DefaultValue: cty.BoolVal(true),
},
},
},
true, false,
[]packer.Build{},
false,
},
{"unset used variable",
defaultParser,
parseTestArgs{"testdata/variables/unset_used_string_variable.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"foo": &Variable{
Name: "foo",
},
},
},
true, true,
[]packer.Build{},
true,
},
{"unset unused variable",
defaultParser,
parseTestArgs{"testdata/variables/unset_unused_string_variable.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"foo": &Variable{
Name: "foo",
},
},
Sources: map[SourceRef]SourceBlock{
SourceRef{"null", "null-builder", nil}: SourceBlock{
Name: "null-builder",
Type: "null",
},
},
Builds: Builds{
&BuildBlock{
Sources: []SourceRef{
{"null", "null-builder", nil},
},
},
},
},
true, true,
[]packer.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{
Basedir: "testdata/variables/complicated",
InputVariables: Variables{
"name_prefix": &Variable{
Name: "name_prefix",
DefaultValue: cty.StringVal("foo"),
},
},
LocalVariables: Variables{
"name_prefix": &Variable{
Name: "name_prefix",
DefaultValue: cty.StringVal("foo"),
},
"foo": &Variable{
Name: "foo",
DefaultValue: cty.StringVal("foo"),
},
"bar": &Variable{
Name: "bar",
DefaultValue: cty.StringVal("foo"),
},
"for_var": &Variable{
Name: "for_var",
DefaultValue: cty.StringVal("foo"),
},
"bar_var": &Variable{
Name: "bar_var",
DefaultValue: cty.TupleVal([]cty.Value{
cty.StringVal("foo"),
cty.StringVal("foo"),
cty.StringVal("foo"),
}),
},
},
},
false, false,
[]packer.Build{},
false,
},
{"recursive locals",
defaultParser,
parseTestArgs{"testdata/variables/recursive_locals.pkr.hcl", nil, nil},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
LocalVariables: Variables{},
},
true, true,
[]packer.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{
Basedir: filepath.Join("testdata", "variables"),
InputVariables: Variables{
"foo": &Variable{
DefaultValue: cty.StringVal("bar"),
Name: "foo",
VarfileValue: cty.StringVal("wee"),
},
},
},
false, false,
[]packer.Build{},
false,
},
{"unknown variable from var-file",
defaultParser,
parseTestArgs{"testdata/variables/empty.pkr.hcl", nil, []string{"testdata/variables/set-foo-too-wee.hcl"}},
&PackerConfig{
Basedir: filepath.Join("testdata", "variables"),
},
true, false,
[]packer.Build{},
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{
DefaultValue: cty.StringVal("default_value"),
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,
CmdValue: cty.StringVal("cmd_value"),
VarfileValue: cty.StringVal("varfile_value"),
EnvValue: cty.StringVal("env_value"),
DefaultValue: cty.StringVal("default_value"),
},
},
wantValues: map[string]cty.Value{
"used_string": cty.StringVal("cmd_value"),
},
},
{name: "quoted string",
variables: Variables{"quoted_string": &Variable{
DefaultValue: cty.StringVal(`"default_value"`),
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,
CmdValue: cty.StringVal(`"cmd_value"`),
VarfileValue: cty.StringVal(`"varfile_value"`),
EnvValue: cty.StringVal(`"env_value"`),
DefaultValue: cty.StringVal(`"default_value"`),
},
},
wantValues: map[string]cty.Value{
"quoted_string": cty.StringVal(`"cmd_value"`),
},
},
{name: "array of strings",
variables: Variables{"used_strings": &Variable{
DefaultValue: stringListVal("default_value_1"),
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),
CmdValue: stringListVal("cmd_value_1"),
VarfileValue: stringListVal("varfile_value_1"),
EnvValue: stringListVal("env_value_1", "env_value_2"),
DefaultValue: stringListVal("default_value_1"),
},
},
wantValues: map[string]cty.Value{
"used_strings": stringListVal("cmd_value_1"),
},
},
{name: "bool",
variables: Variables{"enabled": &Variable{
DefaultValue: cty.False,
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,
CmdValue: cty.True,
VarfileValue: cty.False,
EnvValue: cty.True,
DefaultValue: cty.False,
},
},
wantValues: map[string]cty.Value{
"enabled": cty.True,
},
},
{name: "invalid env var",
variables: Variables{"used_string": &Variable{
DefaultValue: cty.StringVal("default_value"),
Type: cty.String,
}},
args: args{
env: []string{`PKR_VAR_used_string`},
},
// output
wantDiags: false,
wantVariables: Variables{
"used_string": &Variable{
Type: cty.String,
DefaultValue: cty.StringVal("default_value"),
},
},
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: true,
wantDiagsHasError: false,
wantVariables: Variables{},
wantValues: map[string]cty.Value{},
},
{name: "undefined but set value - pkrvar file - strict mode",
variables: Variables{},
validationOptions: ValidationOptions{
Strict: true,
},
args: args{
hclFiles: []string{`undefined_string="value"`},
},
// output
wantDiags: true,
wantDiagsHasError: true,
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),
EnvValue: cty.DynamicVal,
},
},
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,
VarfileValue: cty.DynamicVal,
},
},
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,
CmdValue: cty.DynamicVal,
},
},
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_*"+hcl2VarFileExt, i))
if diags != nil {
t.Fatalf("ParseHCLFile %d: %v", i, diags)
}
files = append(files, file)
}
cfg := &PackerConfig{
InputVariables: tt.variables,
ValidationOptions: tt.validationOptions,
}
gotDiags := cfg.collectInputVariableValues(tt.args.env, files, tt.args.argv)
if (gotDiags == nil) == tt.wantDiags {
t.Fatalf("Variables.collectVariableValues() = %v, want %v", gotDiags, tt.wantDiags)
}
if tt.wantDiagsHasError != gotDiags.HasErrors() {
t.Fatalf("Variables.collectVariableValues() unexpected diagnostics HasErrors. %s", gotDiags)
}
if diff := cmp.Diff(fmt.Sprintf("%#v", tt.wantVariables), fmt.Sprintf("%#v", tt.variables)); diff != "" {
t.Fatalf("didn't get expected variables: %s", diff)
}
values := map[string]cty.Value{}
for k, v := range tt.variables {
value, diag := v.Value()
if diag != nil {
t.Fatalf("Value %s: %v", k, diag)
}
values[k] = value
}
if diff := cmp.Diff(fmt.Sprintf("%#v", values), fmt.Sprintf("%#v", tt.wantValues)); diff != "" {
t.Fatalf("didn't get expected values: %s", diff)
}
})
}
}
func stringListVal(strings ...string) cty.Value {
values := []cty.Value{}
for _, str := range strings {
values = append(values, cty.StringVal(str))
}
list, err := convert.Convert(cty.ListVal(values), cty.List(cty.String))
if err != nil {
panic(err)
}
return list
}