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ast_body_test.go
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ast_body_test.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package hclwrite
import (
"fmt"
"reflect"
"strings"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/google/go-cmp/cmp"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/hclsyntax"
"github.com/zclconf/go-cty/cty"
)
func TestBodyGetAttribute(t *testing.T) {
tests := []struct {
src string
name string
want Tokens
}{
{
"",
"a",
nil,
},
{
"a = 1\n",
"a",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'1'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
{
"a = 1\nb = 1\nc = 1\n",
"a",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'1'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
{
"a = 1\nb = 2\nc = 3\n",
"b",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'2'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
{
"a = 1\nb = 2\nc = 3\n",
"c",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'c'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'3'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
{
"a = 1\n# b is a b\nb = 2\nc = 3\n",
"b",
Tokens{
{
// Recognized as a lead comment and so attached to the attribute
Type: hclsyntax.TokenComment,
Bytes: []byte("# b is a b\n"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'2'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
{
"a = 1\n# not attached to a or b\n\nb = 2\nc = 3\n",
"b",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte{'2'},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
},
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s in %s", test.name, test.src), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
attr := f.Body().GetAttribute(test.name)
if attr == nil {
if test.want != nil {
t.Fatal("attribute not found, but want it to exist")
}
} else {
if test.want == nil {
t.Fatal("attribute found, but expecting not found")
}
got := attr.BuildTokens(nil)
if !reflect.DeepEqual(got, test.want) {
t.Errorf("wrong result\ngot: %s\nwant: %s", spew.Sdump(got), spew.Sdump(test.want))
}
}
})
}
}
func TestBodyFirstMatchingBlock(t *testing.T) {
src := `a = "b"
service {
attr0 = "val0"
}
service "label1" {
attr1 = "val1"
}
service "label1" "label2" {
attr2 = "val2"
}
parent {
attr3 = "val3"
child {
attr4 = "val4"
}
}
`
tests := []struct {
src string
typeName string
labels []string
want string
}{
{
src,
"service",
[]string{},
`service {
attr0 = "val0"
}
`,
},
{
src,
"service",
[]string{"label1"},
`service "label1" {
attr1 = "val1"
}
`,
},
{
src,
"service",
[]string{"label1", "label2"},
`service "label1" "label2" {
attr2 = "val2"
}
`,
},
{
src,
"parent",
[]string{},
`parent {
attr3 = "val3"
child {
attr4 = "val4"
}
}
`,
},
{
src,
"hoge",
[]string{},
"",
},
{
src,
"hoge",
[]string{"label1"},
"",
},
{
src,
"service",
[]string{"label2"},
"",
},
{
src,
"service",
[]string{"label2", "label1"},
"",
},
{
src,
"child",
[]string{},
"",
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s %s", test.typeName, strings.Join(test.labels, " ")), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
block := f.Body().FirstMatchingBlock(test.typeName, test.labels)
if block == nil {
if test.want != "" {
t.Fatal("block not found, but want it to exist")
}
} else {
if test.want == "" {
t.Fatal("block found, but expecting not found")
}
got := string(block.BuildTokens(nil).Bytes())
if got != test.want {
t.Errorf("wrong result\ngot: %s\nwant: %s", got, test.want)
}
}
})
}
}
func TestBodySetAttributeValue(t *testing.T) {
tests := []struct {
src string
name string
val cty.Value
want Tokens
}{
{
"",
"a",
cty.True,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"b = false\n",
"a",
cty.True,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("false"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"a = false\n",
"a",
cty.True,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"a = 1\nb = false\n",
"a",
cty.True,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("false"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s = %#v in %s", test.name, test.val, test.src), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
f.Body().SetAttributeValue(test.name, test.val)
got := f.BuildTokens(nil)
format(got)
if !reflect.DeepEqual(got, test.want) {
diff := cmp.Diff(test.want, got)
t.Errorf("wrong result\ngot: %s\nwant: %s\ndiff:\n%s", spew.Sdump(got), spew.Sdump(test.want), diff)
}
})
}
}
func TestBodySetAttributeTraversal(t *testing.T) {
tests := []struct {
src string
name string
trav string
want Tokens
}{
{
"",
"a",
`b`,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("b"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"",
"a",
`b.c.d`,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("b"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenDot,
Bytes: []byte("."),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("c"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenDot,
Bytes: []byte("."),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("d"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"",
"a",
`b[0]`,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("b"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenOBrack,
Bytes: []byte("["),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte("0"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenCBrack,
Bytes: []byte("]"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"",
"a",
`b[0].c`,
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("b"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenOBrack,
Bytes: []byte("["),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte("0"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenCBrack,
Bytes: []byte("]"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenDot,
Bytes: []byte("."),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("c"),
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s = %s in %s", test.name, test.trav, test.src), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
traversal, diags := hclsyntax.ParseTraversalAbs([]byte(test.trav), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics from traversal")
}
f.Body().SetAttributeTraversal(test.name, traversal)
got := f.BuildTokens(nil)
format(got)
if !reflect.DeepEqual(got, test.want) {
diff := cmp.Diff(test.want, got)
t.Errorf("wrong result\ngot: %s\nwant: %s\ndiff:\n%s", spew.Sdump(got), spew.Sdump(test.want), diff)
}
})
}
}
func TestBodySetAttributeRaw(t *testing.T) {
tests := []struct {
src string
name string
tokens Tokens
want Tokens
}{
{
"",
"a",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte(`true`),
SpacesBefore: 0,
},
},
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"a = 23\n",
"a",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte(`true`),
SpacesBefore: 0,
},
},
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
{
"b = 23\n",
"a",
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte(`true`),
SpacesBefore: 0,
},
},
Tokens{
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'b'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNumberLit,
Bytes: []byte("23"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte{'a'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEqual,
Bytes: []byte{'='},
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenIdent,
Bytes: []byte("true"),
SpacesBefore: 1,
},
{
Type: hclsyntax.TokenNewline,
Bytes: []byte{'\n'},
SpacesBefore: 0,
},
{
Type: hclsyntax.TokenEOF,
Bytes: []byte{},
SpacesBefore: 0,
},
},
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s = %s in %s", test.name, test.tokens.Bytes(), test.src), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
f.Body().SetAttributeRaw(test.name, test.tokens)
got := f.BuildTokens(nil)
format(got)
if !reflect.DeepEqual(got, test.want) {
diff := cmp.Diff(test.want, got)
t.Errorf("wrong result\ngot: %s\nwant: %s\ndiff:\n%s", spew.Sdump(got), spew.Sdump(test.want), diff)
}
})
}
}
func TestBodySetAttributeValueInBlock(t *testing.T) {
src := `service "label1" {
attr1 = "val1"
}
`
tests := []struct {
src string
typeName string
labels []string
attr string
val cty.Value
want string
}{
{
src,
"service",
[]string{"label1"},
"attr1",
cty.StringVal("updated1"),
`service "label1" {
attr1 = "updated1"
}
`,
},
}
for _, test := range tests {
t.Run(fmt.Sprintf("%s = %#v in %s %s", test.attr, test.val, test.typeName, strings.Join(test.labels, " ")), func(t *testing.T) {
f, diags := ParseConfig([]byte(test.src), "", hcl.Pos{Line: 1, Column: 1})
if len(diags) != 0 {
for _, diag := range diags {
t.Logf("- %s", diag.Error())
}
t.Fatalf("unexpected diagnostics")
}
b := f.Body().FirstMatchingBlock(test.typeName, test.labels)
b.Body().SetAttributeValue(test.attr, test.val)
tokens := f.BuildTokens(nil)
format(tokens)
got := string(tokens.Bytes())
if got != test.want {
t.Errorf("wrong result\ngot: %s\nwant: %s\n", got, test.want)
}
})
}
}
func TestBodySetAttributeValueInNestedBlock(t *testing.T) {
src := `parent {
attr1 = "val1"
child {
attr2 = "val2"
}
}
`
tests := []struct {
src string
parentTypeName string
childTypeName string
attr string
val cty.Value
want string
}{
{