683 lines
19 KiB
Go
683 lines
19 KiB
Go
package refactoring
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import (
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"fmt"
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"sort"
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"strings"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/google/go-cmp/cmp"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/hclsyntax"
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"github.com/hashicorp/terraform/internal/addrs"
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"github.com/hashicorp/terraform/internal/states"
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)
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func TestApplyMoves(t *testing.T) {
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providerAddr := addrs.AbsProviderConfig{
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Module: addrs.RootModule,
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Provider: addrs.MustParseProviderSourceString("example.com/foo/bar"),
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}
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moduleBoo, _ := addrs.ParseModuleInstanceStr("module.boo")
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moduleBarKey, _ := addrs.ParseModuleInstanceStr("module.bar[0]")
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instAddrs := map[string]addrs.AbsResourceInstance{
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"foo.from": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
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"foo.mid": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "mid",
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}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
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"foo.to": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
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"foo.from[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.IntKey(0)).Absolute(addrs.RootModuleInstance),
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"foo.to[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.IntKey(0)).Absolute(addrs.RootModuleInstance),
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"module.boo.foo.from": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.NoKey).Absolute(moduleBoo),
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"module.boo.foo.mid": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "mid",
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}.Instance(addrs.NoKey).Absolute(moduleBoo),
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"module.boo.foo.to": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.NoKey).Absolute(moduleBoo),
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"module.boo.foo.from[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.IntKey(0)).Absolute(moduleBoo),
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"module.boo.foo.to[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.IntKey(0)).Absolute(moduleBoo),
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"module.bar[0].foo.from": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.NoKey).Absolute(moduleBarKey),
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"module.bar[0].foo.mid": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "mid",
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}.Instance(addrs.NoKey).Absolute(moduleBarKey),
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"module.bar[0].foo.to": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.NoKey).Absolute(moduleBarKey),
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"module.bar[0].foo.from[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "from",
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}.Instance(addrs.IntKey(0)).Absolute(moduleBarKey),
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"module.bar[0].foo.to[0]": addrs.Resource{
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Mode: addrs.ManagedResourceMode,
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Type: "foo",
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Name: "to",
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}.Instance(addrs.IntKey(0)).Absolute(moduleBarKey),
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}
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emptyResults := MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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}
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tests := map[string]struct {
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Stmts []MoveStatement
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State *states.State
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WantResults MoveResults
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WantInstanceAddrs []string
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}{
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"no moves and empty state": {
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[]MoveStatement{},
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states.NewState(),
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emptyResults,
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nil,
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},
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"no moves": {
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[]MoveStatement{},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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emptyResults,
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[]string{
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`foo.from`,
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},
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},
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"single move of whole singleton resource": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "foo.to"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["foo.to"].UniqueKey(): {
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From: instAddrs["foo.from"],
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To: instAddrs["foo.to"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`foo.to`,
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},
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},
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"single move of whole 'count' resource": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "foo.to"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["foo.to[0]"].UniqueKey(): {
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From: instAddrs["foo.from[0]"],
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To: instAddrs["foo.to[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`foo.to[0]`,
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},
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},
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"chained move of whole singleton resource": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "foo.mid"),
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testMoveStatement(t, "", "foo.mid", "foo.to"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["foo.to"].UniqueKey(): {
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From: instAddrs["foo.from"],
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To: instAddrs["foo.to"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`foo.to`,
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},
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},
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"move whole resource into module": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "module.boo.foo.to"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["module.boo.foo.to[0]"].UniqueKey(): {
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From: instAddrs["foo.from[0]"],
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To: instAddrs["module.boo.foo.to[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`module.boo.foo.to[0]`,
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},
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},
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"move resource instance between modules": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.boo.foo.from[0]", "module.bar[0].foo.to[0]"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.boo.foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["module.bar[0].foo.to[0]"].UniqueKey(): {
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From: instAddrs["module.boo.foo.from[0]"],
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To: instAddrs["module.bar[0].foo.to[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`module.bar[0].foo.to[0]`,
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},
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},
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"move whole single module to indexed module": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.boo", "module.bar[0]"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.boo.foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["module.bar[0].foo.from[0]"].UniqueKey(): {
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From: instAddrs["module.boo.foo.from[0]"],
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To: instAddrs["module.bar[0].foo.from[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`module.bar[0].foo.from[0]`,
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},
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},
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"move whole module to indexed module and move instance chained": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.boo", "module.bar[0]"),
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testMoveStatement(t, "bar", "foo.from[0]", "foo.to[0]"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.boo.foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["module.bar[0].foo.to[0]"].UniqueKey(): {
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From: instAddrs["module.boo.foo.from[0]"],
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To: instAddrs["module.bar[0].foo.to[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`module.bar[0].foo.to[0]`,
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},
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},
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"move instance to indexed module and instance chained": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.boo.foo.from[0]", "module.bar[0].foo.from[0]"),
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testMoveStatement(t, "bar", "foo.from[0]", "foo.to[0]"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.boo.foo.from[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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Changes: map[addrs.UniqueKey]MoveSuccess{
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instAddrs["module.bar[0].foo.to[0]"].UniqueKey(): {
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From: instAddrs["module.boo.foo.from[0]"],
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To: instAddrs["module.bar[0].foo.to[0]"],
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},
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},
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Blocked: map[addrs.UniqueKey]MoveBlocked{},
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},
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[]string{
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`module.bar[0].foo.to[0]`,
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},
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},
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"move module instance to already-existing module instance": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.bar[0]", "module.boo"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.bar[0].foo.from"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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s.SetResourceInstanceCurrent(
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instAddrs["module.boo.foo.to[0]"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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// Nothing moved, because the module.b address is already
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// occupied by another module.
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Changes: map[addrs.UniqueKey]MoveSuccess{},
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Blocked: map[addrs.UniqueKey]MoveBlocked{
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instAddrs["module.bar[0].foo.from"].Module.UniqueKey(): {
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Wanted: instAddrs["module.boo.foo.to[0]"].Module,
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Actual: instAddrs["module.bar[0].foo.from"].Module,
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},
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},
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},
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[]string{
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`module.bar[0].foo.from`,
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`module.boo.foo.to[0]`,
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},
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},
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"move resource to already-existing resource": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "foo.to"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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s.SetResourceInstanceCurrent(
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instAddrs["foo.to"],
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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// Nothing moved, because the from.to address is already
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// occupied by another resource.
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Changes: map[addrs.UniqueKey]MoveSuccess{},
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Blocked: map[addrs.UniqueKey]MoveBlocked{
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instAddrs["foo.from"].ContainingResource().UniqueKey(): {
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Wanted: instAddrs["foo.to"].ContainingResource(),
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Actual: instAddrs["foo.from"].ContainingResource(),
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},
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},
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},
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[]string{
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`foo.from`,
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`foo.to`,
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},
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},
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"move resource instance to already-existing resource instance": {
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[]MoveStatement{
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testMoveStatement(t, "", "foo.from", "foo.to[0]"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
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&states.ResourceInstanceObjectSrc{
|
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Status: states.ObjectReady,
|
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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s.SetResourceInstanceCurrent(
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instAddrs["foo.to[0]"],
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&states.ResourceInstanceObjectSrc{
|
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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// Nothing moved, because the from.to[0] address is already
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// occupied by another resource instance.
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Changes: map[addrs.UniqueKey]MoveSuccess{},
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Blocked: map[addrs.UniqueKey]MoveBlocked{
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instAddrs["foo.from"].UniqueKey(): {
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Wanted: instAddrs["foo.to[0]"],
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Actual: instAddrs["foo.from"],
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},
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},
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},
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[]string{
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`foo.from`,
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`foo.to[0]`,
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},
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},
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// FIXME: This test seems to flap between the result the test case
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// currently records and the "more intuitive" results included inline,
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// which suggests we have a missing edge in our move dependency graph.
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// (The MoveResults commented out below predates some changes to that
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// struct, so will need updating once we uncomment this test.)
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/*
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"move module and then move resource into it": {
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[]MoveStatement{
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testMoveStatement(t, "", "module.bar[0]", "module.boo"),
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testMoveStatement(t, "", "foo.from", "module.boo.foo.from"),
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},
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states.BuildState(func(s *states.SyncState) {
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s.SetResourceInstanceCurrent(
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instAddrs["module.bar[0].foo.to"],
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&states.ResourceInstanceObjectSrc{
|
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Status: states.ObjectReady,
|
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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s.SetResourceInstanceCurrent(
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instAddrs["foo.from"],
|
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&states.ResourceInstanceObjectSrc{
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Status: states.ObjectReady,
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AttrsJSON: []byte(`{}`),
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},
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providerAddr,
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)
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}),
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MoveResults{
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// FIXME: This result is counter-intuitive, because ApplyMoves
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// handled the resource move first and then the module move
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// collided with it. It would be arguably more intuitive to
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// complete the module move first and then let the "smaller"
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// resource move merge into it.
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// (The arguably-more-intuitive results are commented out
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// in the maps below.)
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|
|
Changes: map[addrs.UniqueKey]MoveSuccess{
|
|
//instAddrs["module.boo.foo.to"].UniqueKey(): instAddrs["module.bar[0].foo.to"],
|
|
//instAddrs["module.boo.foo.from"].UniqueKey(): instAddrs["foo.from"],
|
|
instAddrs["module.boo.foo.from"].UniqueKey(): instAddrs["foo.from"],
|
|
},
|
|
Blocked: map[addrs.UniqueKey]MoveBlocked{
|
|
// intuitive result: nothing blocked
|
|
instAddrs["module.bar[0].foo.to"].Module.UniqueKey(): instAddrs["module.boo.foo.from"].Module,
|
|
},
|
|
},
|
|
[]string{
|
|
//`foo.from`,
|
|
//`module.boo.foo.from`,
|
|
`module.bar[0].foo.to`,
|
|
`module.boo.foo.from`,
|
|
},
|
|
},
|
|
*/
|
|
|
|
// FIXME: This test seems to flap between the result the test case
|
|
// currently records and the "more intuitive" results included inline,
|
|
// which suggests we have a missing edge in our move dependency graph.
|
|
// (The MoveResults commented out below predates some changes to that
|
|
// struct, so will need updating once we uncomment this test.)
|
|
/*
|
|
"module move collides with resource move": {
|
|
[]MoveStatement{
|
|
testMoveStatement(t, "", "module.bar[0]", "module.boo"),
|
|
testMoveStatement(t, "", "foo.from", "module.boo.foo.from"),
|
|
},
|
|
states.BuildState(func(s *states.SyncState) {
|
|
s.SetResourceInstanceCurrent(
|
|
instAddrs["module.bar[0].foo.from"],
|
|
&states.ResourceInstanceObjectSrc{
|
|
Status: states.ObjectReady,
|
|
AttrsJSON: []byte(`{}`),
|
|
},
|
|
providerAddr,
|
|
)
|
|
s.SetResourceInstanceCurrent(
|
|
instAddrs["foo.from"],
|
|
&states.ResourceInstanceObjectSrc{
|
|
Status: states.ObjectReady,
|
|
AttrsJSON: []byte(`{}`),
|
|
},
|
|
providerAddr,
|
|
)
|
|
}),
|
|
MoveResults{
|
|
// FIXME: This result is counter-intuitive, because ApplyMoves
|
|
// handled the resource move first and then it was the
|
|
// module move that collided, whereas it would arguably have
|
|
// been better to let the module take priority and have only
|
|
// the one resource move be ignored due to the collision.
|
|
// (The arguably-more-intuitive results are commented out
|
|
// in the maps below.)
|
|
Changes: map[addrs.UniqueKey]MoveSuccess{
|
|
//instAddrs["module.boo.foo.from"].UniqueKey(): instAddrs["module.bar[0].foo.from"],
|
|
instAddrs["module.boo.foo.from"].UniqueKey(): instAddrs["foo.from"],
|
|
},
|
|
Blocked: map[addrs.UniqueKey]MoveBlocked{
|
|
//instAddrs["foo.from"].UniqueKey(): instAddrs["module.bar[0].foo.from"],
|
|
instAddrs["module.bar[0].foo.from"].Module.UniqueKey(): instAddrs["module.boo.foo.from"].Module,
|
|
},
|
|
},
|
|
[]string{
|
|
//`foo.from`,
|
|
//`module.boo.foo.from`,
|
|
`module.bar[0].foo.from`,
|
|
`module.boo.foo.from`,
|
|
},
|
|
},
|
|
*/
|
|
}
|
|
|
|
for name, test := range tests {
|
|
t.Run(name, func(t *testing.T) {
|
|
var stmtsBuf strings.Builder
|
|
for _, stmt := range test.Stmts {
|
|
fmt.Fprintf(&stmtsBuf, "• from: %s\n to: %s\n", stmt.From, stmt.To)
|
|
}
|
|
t.Logf("move statements:\n%s", stmtsBuf.String())
|
|
|
|
t.Logf("resource instances in prior state:\n%s", spew.Sdump(allResourceInstanceAddrsInState(test.State)))
|
|
|
|
state := test.State.DeepCopy() // don't modify the test case in-place
|
|
gotResults := ApplyMoves(test.Stmts, state)
|
|
|
|
if diff := cmp.Diff(test.WantResults, gotResults); diff != "" {
|
|
t.Errorf("wrong results\n%s", diff)
|
|
}
|
|
|
|
gotInstAddrs := allResourceInstanceAddrsInState(state)
|
|
if diff := cmp.Diff(test.WantInstanceAddrs, gotInstAddrs); diff != "" {
|
|
t.Errorf("wrong resource instances in final state\n%s", diff)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func testMoveStatement(t *testing.T, module string, from string, to string) MoveStatement {
|
|
t.Helper()
|
|
|
|
moduleAddr := addrs.RootModule
|
|
if len(module) != 0 {
|
|
moduleAddr = addrs.Module(strings.Split(module, "."))
|
|
}
|
|
|
|
fromTraversal, hclDiags := hclsyntax.ParseTraversalAbs([]byte(from), "from", hcl.InitialPos)
|
|
if hclDiags.HasErrors() {
|
|
t.Fatalf("invalid 'from' argument: %s", hclDiags.Error())
|
|
}
|
|
fromAddr, diags := addrs.ParseMoveEndpoint(fromTraversal)
|
|
if diags.HasErrors() {
|
|
t.Fatalf("invalid 'from' argument: %s", diags.Err().Error())
|
|
}
|
|
toTraversal, hclDiags := hclsyntax.ParseTraversalAbs([]byte(to), "to", hcl.InitialPos)
|
|
if diags.HasErrors() {
|
|
t.Fatalf("invalid 'to' argument: %s", hclDiags.Error())
|
|
}
|
|
toAddr, diags := addrs.ParseMoveEndpoint(toTraversal)
|
|
if diags.HasErrors() {
|
|
t.Fatalf("invalid 'from' argument: %s", diags.Err().Error())
|
|
}
|
|
|
|
fromInModule, toInModule := addrs.UnifyMoveEndpoints(moduleAddr, fromAddr, toAddr)
|
|
if fromInModule == nil || toInModule == nil {
|
|
t.Fatalf("incompatible endpoints")
|
|
}
|
|
|
|
return MoveStatement{
|
|
From: fromInModule,
|
|
To: toInModule,
|
|
|
|
// DeclRange not populated because it's unimportant for our tests
|
|
}
|
|
}
|
|
|
|
func allResourceInstanceAddrsInState(state *states.State) []string {
|
|
var ret []string
|
|
for _, ms := range state.Modules {
|
|
for _, rs := range ms.Resources {
|
|
for key := range rs.Instances {
|
|
ret = append(ret, rs.Addr.Instance(key).String())
|
|
}
|
|
}
|
|
}
|
|
sort.Strings(ret)
|
|
return ret
|
|
}
|