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terraform/helper/schema/resource_diff_test.go

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package schema
import (
"reflect"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/hashicorp/terraform/terraform"
)
// testSetFunc is a very simple function we use to test a foo/bar complex set.
// Both "foo" and "bar" are int values.
//
// This is not foolproof as since it performs sums, you can run into
// collisions. Spec tests accordingly. :P
func testSetFunc(v interface{}) int {
m := v.(map[string]interface{})
return m["foo"].(int) + m["bar"].(int)
}
// resourceDiffTestCase provides a test case struct for SetNew and SetDiff.
type resourceDiffTestCase struct {
Name string
Schema map[string]*Schema
State *terraform.InstanceState
Config *terraform.ResourceConfig
Diff *terraform.InstanceDiff
Key string
OldValue interface{}
NewValue interface{}
Expected *terraform.InstanceDiff
ExpectedError bool
}
// testDiffCases produces a list of test cases for use with SetNew and SetDiff.
func testDiffCases(t *testing.T, oldPrefix string, oldOffset int, computed bool) []resourceDiffTestCase {
return []resourceDiffTestCase{
resourceDiffTestCase{
Name: "basic primitive diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
NewValue: "qux",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: func() string {
if computed {
return ""
}
return "qux"
}(),
NewComputed: computed,
},
},
},
},
resourceDiffTestCase{
Name: "basic set diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeSet,
Optional: true,
Computed: true,
Elem: &Schema{Type: TypeString},
Set: HashString,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo.#": "1",
"foo.1996459178": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": []interface{}{"baz"},
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo.1996459178": &terraform.ResourceAttrDiff{
Old: "bar",
New: "",
NewRemoved: true,
},
"foo.2015626392": &terraform.ResourceAttrDiff{
Old: "",
New: "baz",
},
},
},
Key: "foo",
NewValue: []interface{}{"qux"},
Expected: &terraform.InstanceDiff{
Attributes: func() map[string]*terraform.ResourceAttrDiff {
result := map[string]*terraform.ResourceAttrDiff{}
if computed {
result["foo.#"] = &terraform.ResourceAttrDiff{
Old: "1",
New: "",
NewComputed: true,
}
} else {
result["foo.2800005064"] = &terraform.ResourceAttrDiff{
Old: "",
New: "qux",
}
result["foo.1996459178"] = &terraform.ResourceAttrDiff{
Old: "bar",
New: "",
NewRemoved: true,
}
}
return result
}(),
},
},
resourceDiffTestCase{
Name: "basic list diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeList,
Optional: true,
Computed: true,
Elem: &Schema{Type: TypeString},
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo.#": "1",
"foo.0": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": []interface{}{"baz"},
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo.0": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
NewValue: []interface{}{"qux"},
Expected: &terraform.InstanceDiff{
Attributes: func() map[string]*terraform.ResourceAttrDiff {
result := make(map[string]*terraform.ResourceAttrDiff)
if computed {
result["foo.#"] = &terraform.ResourceAttrDiff{
Old: "1",
New: "",
NewComputed: true,
}
} else {
result["foo.0"] = &terraform.ResourceAttrDiff{
Old: "bar",
New: "qux",
}
}
return result
}(),
},
},
resourceDiffTestCase{
Name: "basic map diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeMap,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo.%": "1",
"foo.bar": "baz",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": map[string]interface{}{"bar": "qux"},
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo.bar": &terraform.ResourceAttrDiff{
Old: "baz",
New: "qux",
},
},
},
Key: "foo",
NewValue: map[string]interface{}{"bar": "quux"},
Expected: &terraform.InstanceDiff{
Attributes: func() map[string]*terraform.ResourceAttrDiff {
result := make(map[string]*terraform.ResourceAttrDiff)
if computed {
result["foo.%"] = &terraform.ResourceAttrDiff{
Old: "",
New: "",
NewComputed: true,
}
result["foo.bar"] = &terraform.ResourceAttrDiff{
Old: "baz",
New: "",
NewRemoved: true,
}
} else {
result["foo.bar"] = &terraform.ResourceAttrDiff{
Old: "baz",
New: "quux",
}
}
return result
}(),
},
},
resourceDiffTestCase{
Name: "additional diff with primitive",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
},
"one": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
"one": "two",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "one",
NewValue: "four",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
"one": &terraform.ResourceAttrDiff{
Old: "two",
New: func() string {
if computed {
return ""
}
return "four"
}(),
NewComputed: computed,
},
},
},
},
resourceDiffTestCase{
Name: "additional diff with primitive computed only",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
},
"one": &Schema{
Type: TypeString,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
"one": "two",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "one",
NewValue: "three",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
"one": &terraform.ResourceAttrDiff{
Old: "two",
New: func() string {
if computed {
return ""
}
return "three"
}(),
NewComputed: computed,
},
},
},
},
resourceDiffTestCase{
Name: "complex-ish set diff",
Schema: map[string]*Schema{
"top": &Schema{
Type: TypeSet,
Optional: true,
Computed: true,
Elem: &Resource{
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeInt,
Optional: true,
Computed: true,
},
"bar": &Schema{
Type: TypeInt,
Optional: true,
Computed: true,
},
},
},
Set: testSetFunc,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"top.#": "2",
"top.3.foo": "1",
"top.3.bar": "2",
"top.23.foo": "11",
"top.23.bar": "12",
},
},
Config: testConfig(t, map[string]interface{}{
"top": []interface{}{
map[string]interface{}{
"foo": 1,
"bar": 3,
},
map[string]interface{}{
"foo": 12,
"bar": 12,
},
},
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"top.4.foo": &terraform.ResourceAttrDiff{
Old: "",
New: "1",
},
"top.4.bar": &terraform.ResourceAttrDiff{
Old: "",
New: "3",
},
"top.24.foo": &terraform.ResourceAttrDiff{
Old: "",
New: "12",
},
"top.24.bar": &terraform.ResourceAttrDiff{
Old: "",
New: "12",
},
},
},
Key: "top",
NewValue: NewSet(testSetFunc, []interface{}{
map[string]interface{}{
"foo": 1,
"bar": 4,
},
map[string]interface{}{
"foo": 13,
"bar": 12,
},
map[string]interface{}{
"foo": 21,
"bar": 22,
},
}),
Expected: &terraform.InstanceDiff{
Attributes: func() map[string]*terraform.ResourceAttrDiff {
result := make(map[string]*terraform.ResourceAttrDiff)
if computed {
result["top.#"] = &terraform.ResourceAttrDiff{
Old: "2",
New: "",
NewComputed: true,
}
} else {
result["top.#"] = &terraform.ResourceAttrDiff{
Old: "2",
New: "3",
}
result["top.5.foo"] = &terraform.ResourceAttrDiff{
Old: "",
New: "1",
}
result["top.5.bar"] = &terraform.ResourceAttrDiff{
Old: "",
New: "4",
}
result["top.25.foo"] = &terraform.ResourceAttrDiff{
Old: "",
New: "13",
}
result["top.25.bar"] = &terraform.ResourceAttrDiff{
Old: "",
New: "12",
}
result["top.43.foo"] = &terraform.ResourceAttrDiff{
Old: "",
New: "21",
}
result["top.43.bar"] = &terraform.ResourceAttrDiff{
Old: "",
New: "22",
}
}
return result
}(),
},
},
resourceDiffTestCase{
Name: "primitive, no diff, no refresh",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{}),
Diff: &terraform.InstanceDiff{Attributes: map[string]*terraform.ResourceAttrDiff{}},
Key: "foo",
NewValue: "baz",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: func() string {
if computed {
return ""
}
return "baz"
}(),
NewComputed: computed,
},
},
},
},
resourceDiffTestCase{
Name: "non-computed key, should error",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Required: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
NewValue: "qux",
ExpectedError: true,
},
resourceDiffTestCase{
Name: "bad key, should error",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Required: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "bad",
NewValue: "qux",
ExpectedError: true,
},
}
}
func TestSetNew(t *testing.T) {
testCases := testDiffCases(t, "", 0, false)
for _, tc := range testCases {
t.Run(tc.Name, func(t *testing.T) {
m := schemaMap(tc.Schema)
d := newResourceDiff(tc.Schema, tc.Config, tc.State, tc.Diff)
err := d.SetNew(tc.Key, tc.NewValue)
switch {
case err != nil && !tc.ExpectedError:
t.Fatalf("bad: %s", err)
case err == nil && tc.ExpectedError:
t.Fatalf("Expected error, got none")
case err != nil && tc.ExpectedError:
return
}
for _, k := range d.UpdatedKeys() {
if err := m.diff(k, m[k], tc.Diff, d, false); err != nil {
t.Fatalf("bad: %s", err)
}
}
if !reflect.DeepEqual(tc.Expected, tc.Diff) {
t.Fatalf("Expected %s, got %s", spew.Sdump(tc.Expected), spew.Sdump(tc.Diff))
}
})
}
}
func TestSetNewComputed(t *testing.T) {
testCases := testDiffCases(t, "", 0, true)
for _, tc := range testCases {
t.Run(tc.Name, func(t *testing.T) {
m := schemaMap(tc.Schema)
d := newResourceDiff(tc.Schema, tc.Config, tc.State, tc.Diff)
err := d.SetNewComputed(tc.Key)
switch {
case err != nil && !tc.ExpectedError:
t.Fatalf("bad: %s", err)
case err == nil && tc.ExpectedError:
t.Fatalf("Expected error, got none")
case err != nil && tc.ExpectedError:
return
}
for _, k := range d.UpdatedKeys() {
if err := m.diff(k, m[k], tc.Diff, d, false); err != nil {
t.Fatalf("bad: %s", err)
}
}
if !reflect.DeepEqual(tc.Expected, tc.Diff) {
t.Fatalf("Expected %s, got %s", spew.Sdump(tc.Expected), spew.Sdump(tc.Diff))
}
})
}
}
func TestForceNew(t *testing.T) {
cases := []resourceDiffTestCase{
resourceDiffTestCase{
Name: "basic primitive diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
RequiresNew: true,
},
},
},
},
resourceDiffTestCase{
Name: "no change, should error",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "bar",
}),
ExpectedError: true,
},
resourceDiffTestCase{
Name: "basic primitive, non-computed key",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Required: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
RequiresNew: true,
},
},
},
},
}
for _, tc := range cases {
t.Run(tc.Name, func(t *testing.T) {
m := schemaMap(tc.Schema)
d := newResourceDiff(m, tc.Config, tc.State, tc.Diff)
err := d.ForceNew(tc.Key)
switch {
case err != nil && !tc.ExpectedError:
t.Fatalf("bad: %s", err)
case err == nil && tc.ExpectedError:
t.Fatalf("Expected error, got none")
case err != nil && tc.ExpectedError:
return
}
for _, k := range d.UpdatedKeys() {
if err := m.diff(k, m[k], tc.Diff, d, false); err != nil {
t.Fatalf("bad: %s", err)
}
}
if !reflect.DeepEqual(tc.Expected, tc.Diff) {
t.Fatalf("Expected %s, got %s", spew.Sdump(tc.Expected), spew.Sdump(tc.Diff))
}
})
}
}
func TestClear(t *testing.T) {
cases := []resourceDiffTestCase{
resourceDiffTestCase{
Name: "basic primitive diff",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
Expected: &terraform.InstanceDiff{Attributes: map[string]*terraform.ResourceAttrDiff{}},
},
resourceDiffTestCase{
Name: "non-computed key, should error",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Required: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
Key: "foo",
ExpectedError: true,
},
resourceDiffTestCase{
Name: "multi-value, one removed",
Schema: map[string]*Schema{
"foo": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
"one": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
},
},
State: &terraform.InstanceState{
Attributes: map[string]string{
"foo": "bar",
"one": "two",
},
},
Config: testConfig(t, map[string]interface{}{
"foo": "baz",
"one": "three",
}),
Diff: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
"one": &terraform.ResourceAttrDiff{
Old: "two",
New: "three",
},
},
},
Key: "one",
Expected: &terraform.InstanceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"foo": &terraform.ResourceAttrDiff{
Old: "bar",
New: "baz",
},
},
},
},
}
for _, tc := range cases {
t.Run(tc.Name, func(t *testing.T) {
m := schemaMap(tc.Schema)
d := newResourceDiff(m, tc.Config, tc.State, tc.Diff)
err := d.Clear(tc.Key)
switch {
case err != nil && !tc.ExpectedError:
t.Fatalf("bad: %s", err)
case err == nil && tc.ExpectedError:
t.Fatalf("Expected error, got none")
case err != nil && tc.ExpectedError:
return
}
for _, k := range d.UpdatedKeys() {
if err := m.diff(k, m[k], tc.Diff, d, false); err != nil {
t.Fatalf("bad: %s", err)
}
}
if !reflect.DeepEqual(tc.Expected, tc.Diff) {
t.Fatalf("Expected %s, got %s", spew.Sdump(tc.Expected), spew.Sdump(tc.Diff))
}
})
}
}
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