tests: lots of small asjustement

did/didtest/crypto.go

@@ -4,27 +4,28 @@
 package didtest
 
 import (
-	"sync"
+	"fmt"
 	"testing"
 
 	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/stretchr/testify/require"
+
 	"github.com/ucan-wg/go-ucan/did"
 )
 
 const (
-	alicePrivKeyCfg = "CAESQHdNJLBBiuc1AdwPHBkubB2KS1p0cv2JEF7m8tfwtrcm5ajaYPm+XmVCmtcHOF2lGDlmaiDA7emfwD3IrcyES0M="
-	bobPrivKeyCfg   = "CAESQHBz+AIop1g+9iBDj+ufUc/zm9/ry7c6kDFO8Wl/D0+H63V9hC6s9l4npf3pYEFCjBtlR0AMNWMoFQKSlYNKo20="
-	carolPrivKeyCfg = "CAESQPrCgkcHnYFXDT9AlAydhPECBEivEuuVx9dJxLjVvDTmJIVNivfzg6H4mAiPfYS+5ryVVUZTHZBzvMuvvvG/Ks0="
-	danPrivKeyCfg   = "CAESQCgNhzofKhC+7hW6x+fNd7iMPtQHeEmKRhhlduf/I7/TeOEFYAEflbJ0sAhMeDJ/HQXaAvsWgHEbJ3ZLhP8q2B0="
-	erinPrivKeyCfg  = "CAESQKhCJo5UBpQcthko8DKMFsbdZ+qqQ5oc01CtLCqrE90dF2GfRlrMmot3WPHiHGCmEYi5ZMEHuiSI095e/6O4Bpw="
-	frankPrivKeyCfg = "CAESQDlXPKsy3jHh7OWTWQqyZF95Ueac5DKo7xD0NOBE5F2BNr1ZVxRmJ2dBELbOt8KP9sOACcO9qlCB7uMA1UQc7sk="
+	alicePrivKeyB64 = "CAESQHdNJLBBiuc1AdwPHBkubB2KS1p0cv2JEF7m8tfwtrcm5ajaYPm+XmVCmtcHOF2lGDlmaiDA7emfwD3IrcyES0M="
+	bobPrivKeyB64   = "CAESQHBz+AIop1g+9iBDj+ufUc/zm9/ry7c6kDFO8Wl/D0+H63V9hC6s9l4npf3pYEFCjBtlR0AMNWMoFQKSlYNKo20="
+	carolPrivKeyB64 = "CAESQPrCgkcHnYFXDT9AlAydhPECBEivEuuVx9dJxLjVvDTmJIVNivfzg6H4mAiPfYS+5ryVVUZTHZBzvMuvvvG/Ks0="
+	danPrivKeyB64   = "CAESQCgNhzofKhC+7hW6x+fNd7iMPtQHeEmKRhhlduf/I7/TeOEFYAEflbJ0sAhMeDJ/HQXaAvsWgHEbJ3ZLhP8q2B0="
+	erinPrivKeyB64  = "CAESQKhCJo5UBpQcthko8DKMFsbdZ+qqQ5oc01CtLCqrE90dF2GfRlrMmot3WPHiHGCmEYi5ZMEHuiSI095e/6O4Bpw="
+	frankPrivKeyB64 = "CAESQDlXPKsy3jHh7OWTWQqyZF95Ueac5DKo7xD0NOBE5F2BNr1ZVxRmJ2dBELbOt8KP9sOACcO9qlCB7uMA1UQc7sk="
 )
 
 // Persona is a generic participant used for cryptographic testing.
 type Persona int
 
-// The provided  Personas were selected from the first few generic
+// The provided Personas were selected from the first few generic
 // participants listed in this [table].
 //
 // [table]: https://en.wikipedia.org/wiki/Alice_and_Bob#Cryptographic_systems
@@ -37,26 +38,36 @@ const (
 	PersonaFrank
 )
 
-var (
-	once     sync.Once
+var privKeys map[Persona]crypto.PrivKey
+
+func init() {
 	privKeys = make(map[Persona]crypto.PrivKey, 6)
-	err      error
-)
+	for persona, privKeyCfg := range privKeyB64() {
+		privKeyMar, err := crypto.ConfigDecodeKey(privKeyCfg)
+		if err != nil {
+			return
+		}
+
+		privKey, err := crypto.UnmarshalPrivateKey(privKeyMar)
+		if err != nil {
+			return
+		}
+
+		privKeys[persona] = privKey
+	}
+}
 
 // DID returns a did.DID based on the Persona's Ed25519 public key.
-func (p Persona) DID(t *testing.T) did.DID {
-	t.Helper()
-
-	did, err := did.FromPrivKey(p.PrivKey(t))
-	require.NoError(t, err)
-
-	return did
+func (p Persona) DID() did.DID {
+	d, err := did.FromPrivKey(p.PrivKey())
+	if err != nil {
+		panic(err)
+	}
+	return d
 }
 
 // Name returns the username of the Persona.
-func (p Persona) Name(t *testing.T) string {
-	t.Helper()
-
+func (p Persona) Name() string {
 	name, ok := map[Persona]string{
 		PersonaAlice: "Alice",
 		PersonaBob:   "Bob",
@@ -66,78 +77,45 @@ func (p Persona) Name(t *testing.T) string {
 		PersonaFrank: "Frank",
 	}[p]
 	if !ok {
-		t.Fatal("Unknown persona:", p)
+		panic(fmt.Sprintf("Unknown persona: %v", p))
 	}
 
 	return name
 }
 
 // PrivKey returns the Ed25519 private key for the Persona.
-func (p Persona) PrivKey(t *testing.T) crypto.PrivKey {
-	t.Helper()
-
-	once.Do(func() {
-		for persona, privKeyCfg := range privKeyCfgs(t) {
-			privKeyMar, err := crypto.ConfigDecodeKey(privKeyCfg)
-			if err != nil {
-				return
-			}
-
-			privKey, err := crypto.UnmarshalPrivateKey(privKeyMar)
-			if err != nil {
-				return
-			}
-
-			privKeys[persona] = privKey
-		}
-	})
-	require.NoError(t, err)
-
+func (p Persona) PrivKey() crypto.PrivKey {
 	return privKeys[p]
 }
 
-// PrivKeyConfig returns the marshaled and encoded Ed25519 private key
-// for the Persona.
-func (p Persona) PrivKeyConfig(t *testing.T) string {
-	t.Helper()
-
-	return privKeyCfgs(t)[p]
-}
-
 // PubKey returns the Ed25519 public key for the Persona.
-func (p Persona) PubKey(t *testing.T) crypto.PubKey {
-	t.Helper()
-
-	return p.PrivKey(t).GetPublic()
+func (p Persona) PubKey() crypto.PubKey {
+	return p.PrivKey().GetPublic()
 }
 
 // PubKeyConfig returns the marshaled and encoded Ed25519 public key
 // for the Persona.
 func (p Persona) PubKeyConfig(t *testing.T) string {
-	pubKeyMar, err := crypto.MarshalPublicKey(p.PrivKey(t).GetPublic())
+	pubKeyMar, err := crypto.MarshalPublicKey(p.PrivKey().GetPublic())
 	require.NoError(t, err)
 
 	return crypto.ConfigEncodeKey(pubKeyMar)
 }
 
-func privKeyCfgs(t *testing.T) map[Persona]string {
-	t.Helper()
-
+func privKeyB64() map[Persona]string {
 	return map[Persona]string{
-		PersonaAlice: alicePrivKeyCfg,
-		PersonaBob:   bobPrivKeyCfg,
-		PersonaCarol: carolPrivKeyCfg,
-		PersonaDan:   danPrivKeyCfg,
-		PersonaErin:  erinPrivKeyCfg,
-		PersonaFrank: frankPrivKeyCfg,
+		PersonaAlice: alicePrivKeyB64,
+		PersonaBob:   bobPrivKeyB64,
+		PersonaCarol: carolPrivKeyB64,
+		PersonaDan:   danPrivKeyB64,
+		PersonaErin:  erinPrivKeyB64,
+		PersonaFrank: frankPrivKeyB64,
 	}
 }
 
 // Personas returns an (alphabetically) ordered list of the defined
 // Persona values.
-func Personas(t *testing.T) []Persona {
-	t.Helper()
-
+func Personas() []Persona {
 	return []Persona{
 		PersonaAlice,
 		PersonaBob,

pkg/policy/policytest/policy.go

@@ -1,20 +0,0 @@
-// Package policytest provides values and functions that are useful when
-// testing code that relies on Policies.
-package policytest
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-	"github.com/ucan-wg/go-ucan/pkg/policy"
-)
-
-// EmptyPolicy provides a policy with no statements for testing purposes.
-func EmptyPolicy(t *testing.T) policy.Policy {
-	t.Helper()
-
-	pol, err := policy.FromDagJson("[]")
-	require.NoError(t, err)
-
-	return pol
-}

token/delegation/delegationtest/doc.go

@@ -7,14 +7,14 @@
 //
 // Delegation proof-chain names contain each didtest.Persona name in
 // order starting with the root delegation (which will always be generated
-// by Alice.)  This is opposite of the list of cic.Cids that represent the
+// by Alice). This is the opposite of the list of cic.Cids that represent the
 // proof chain.
 //
 // For both the generated delegation tokens granted to Carol's Persona and
 // the proof chains containing Carol's delegations to Dan, if there is no
 // suffix, the proof chain will be deemed valid.  If there is a suffix, it
 // will consist of either the word "Valid" or "Invalid" and the name of the
-// field that has been altered.  Only optional fields will generate proof
+// field that has been altered. Only optional fields will generate proof
 // chains with Valid suffixes.
 //
 // If changes are made to the list of Personas included in the chain, or
@@ -25,9 +25,9 @@
 //	go test . -update
 //
 // Generated delegation Tokens are stored in the data/ directory and loaded
-// into the DelegationLoader on the first call to GetDelegationLoader.
+// into the delegation.Loader.
 // Generated references to these tokens and the tokens themselves are
-// created in the token_gen.go file.  See /token/invocation/invocation_test.go
+// created in the token_gen.go file. See /token/invocation/invocation_test.go
 // for an example of how these delegation tokens and proof-chains can
 // be used during testing.
 package delegationtest

token/delegation/delegationtest/generator.go

@@ -0,0 +1,227 @@
+package delegationtest
+
+import (
+	"os"
+	"path/filepath"
+	"slices"
+	"time"
+
+	"github.com/dave/jennifer/jen"
+	"github.com/ipfs/go-cid"
+	"github.com/libp2p/go-libp2p/core/crypto"
+
+	"github.com/ucan-wg/go-ucan/did"
+	"github.com/ucan-wg/go-ucan/did/didtest"
+	"github.com/ucan-wg/go-ucan/pkg/command"
+	"github.com/ucan-wg/go-ucan/pkg/policy"
+	"github.com/ucan-wg/go-ucan/token/delegation"
+)
+
+const (
+	tokenNamePrefix      = "Token"
+	proorChainNamePrefix = "Proof"
+)
+
+var constantNonce = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b}
+
+type newDelegationParams struct {
+	privKey crypto.PrivKey
+	aud     did.DID
+	sub     did.DID
+	cmd     command.Command
+	pol     policy.Policy
+	opts    []delegation.Option
+}
+
+type token struct {
+	name string
+	id   cid.Cid
+}
+
+type proof struct {
+	name string
+	prf  []cid.Cid
+}
+
+type acc struct {
+	name  string
+	chain []cid.Cid
+}
+
+type variant struct {
+	name    string
+	variant func(*newDelegationParams)
+}
+
+func noopVariant() variant {
+	return variant{
+		name:    "",
+		variant: func(_ *newDelegationParams) {},
+	}
+}
+
+type generator struct {
+	dlgs   []token
+	chains []proof
+}
+
+func (g *generator) chainPersonas(personas []didtest.Persona, acc acc, vari variant) error {
+	acc.name += personas[0].Name()
+
+	proofName := acc.name
+	if len(vari.name) > 0 {
+		proofName += "_" + vari.name
+	}
+	g.createProofChain(proofName, acc.chain)
+
+	if len(personas) < 2 {
+		return nil
+	}
+
+	name := personas[0].Name() + personas[1].Name()
+
+	params := newDelegationParams{
+		privKey: personas[0].PrivKey(),
+		aud:     personas[1].DID(),
+		cmd:     NominalCommand,
+		pol:     policy.Policy{},
+		opts: []delegation.Option{
+			delegation.WithSubject(didtest.PersonaAlice.DID()),
+			delegation.WithNonce(constantNonce),
+		},
+	}
+
+	// Create each nominal token and continue the chain
+	id, err := g.createDelegation(params, name, vari)
+	if err != nil {
+		return err
+	}
+	acc.chain = append(acc.chain, id)
+	err = g.chainPersonas(personas[1:], acc, vari)
+	if err != nil {
+		return err
+	}
+
+	// If the user is Carol, create variants for each invalid and/or optional
+	// parameter and also continue the chain
+	if personas[0] == didtest.PersonaCarol {
+		variants := []variant{
+			{name: "InvalidExpandedCommand", variant: func(p *newDelegationParams) {
+				p.cmd = ExpandedCommand
+			}},
+			{name: "ValidAttenuatedCommand", variant: func(p *newDelegationParams) {
+				p.cmd = AttenuatedCommand
+			}},
+			{name: "InvalidSubject", variant: func(p *newDelegationParams) {
+				p.opts = append(p.opts, delegation.WithSubject(didtest.PersonaBob.DID()))
+			}},
+			{name: "InvalidExpired", variant: func(p *newDelegationParams) {
+				// Note: this makes the generator not deterministic
+				p.opts = append(p.opts, delegation.WithExpiration(time.Now().Add(time.Second)))
+			}},
+			{name: "InvalidInactive", variant: func(p *newDelegationParams) {
+				nbf, err := time.Parse(time.RFC3339, "2070-01-01T00:00:00Z")
+				if err != nil {
+					panic(err)
+				}
+				p.opts = append(p.opts, delegation.WithNotBefore(nbf))
+			}},
+		}
+
+		// Start a branch in the recursion for each of the variants
+		for _, v := range variants {
+			id, err := g.createDelegation(params, name, v)
+			if err != nil {
+				return err
+			}
+
+			// replace the previous Carol token id with the one from the variant
+			acc.chain[len(acc.chain)-1] = id
+			err = g.chainPersonas(personas[1:], acc, v)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (g *generator) createDelegation(params newDelegationParams, name string, vari variant) (cid.Cid, error) {
+	vari.variant(&params)
+
+	tkn, err := delegation.New(params.privKey, params.aud, params.cmd, params.pol, params.opts...)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	data, id, err := tkn.ToSealed(params.privKey)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	dlgName := tokenNamePrefix + name
+	if len(vari.name) > 0 {
+		dlgName += "_" + vari.name
+	}
+
+	err = os.WriteFile(filepath.Join(tokenDir, dlgName+tokenExt), data, 0o644)
+	if err != nil {
+		return cid.Undef, err
+	}
+
+	g.dlgs = append(g.dlgs, token{
+		name: dlgName,
+		id:   id,
+	})
+
+	return id, nil
+}
+
+func (g *generator) createProofChain(name string, prf []cid.Cid) {
+	if len(prf) < 1 {
+		return
+	}
+
+	clone := make([]cid.Cid, len(prf))
+	copy(clone, prf)
+
+	g.chains = append(g.chains, proof{
+		name: proorChainNamePrefix + name,
+		prf:  clone,
+	})
+}
+
+func (g *generator) writeGoFile() error {
+	file := jen.NewFile("delegationtest")
+	file.HeaderComment("Code generated by delegationtest - DO NOT EDIT.")
+
+	refs := map[cid.Cid]string{}
+
+	for _, d := range g.dlgs {
+		refs[d.id] = d.name + "CID"
+
+		file.Var().Defs(
+			jen.Id(d.name+"CID").Op("=").Qual("github.com/ipfs/go-cid", "MustParse").Call(jen.Lit(d.id.String())),
+			jen.Id(d.name).Op("=").Id("mustGetDelegation").Call(jen.Id(d.name+"CID")),
+		)
+		file.Line()
+	}
+
+	for _, c := range g.chains {
+		g := jen.CustomFunc(jen.Options{
+			Multi:     true,
+			Separator: ",",
+			Close:     "\n",
+		}, func(g *jen.Group) {
+			slices.Reverse(c.prf)
+			for _, p := range c.prf {
+				g.Id(refs[p])
+			}
+		})
+
+		file.Var().Id(c.name).Op("=").Index().Qual("github.com/ipfs/go-cid", "Cid").Values(g)
+		file.Line()
+	}
+
+	return file.Save("token_gen.go")
+}

token/delegation/delegationtest/generator_test.go

@@ -1,32 +1,14 @@
 package delegationtest
 
 import (
-	"os"
-	"path/filepath"
-	"slices"
 	"testing"
-	"time"
 
-	"github.com/dave/jennifer/jen"
-	"github.com/ipfs/go-cid"
-	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/stretchr/testify/require"
-	"github.com/ucan-wg/go-ucan/did"
-	"github.com/ucan-wg/go-ucan/did/didtest"
-	"github.com/ucan-wg/go-ucan/pkg/command"
-	"github.com/ucan-wg/go-ucan/pkg/policy"
-	"github.com/ucan-wg/go-ucan/pkg/policy/policytest"
-	"github.com/ucan-wg/go-ucan/token/delegation"
 	"gotest.tools/v3/golden"
-)
 
-const (
-	tokenNamePrefix      = "Token"
-	proorChainNamePrefix = "Proof"
+	"github.com/ucan-wg/go-ucan/did/didtest"
 )
 
-var constantNonce = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b}
-
 // TestUpdate doesn't actually run a test but uses the Go testing library
 // to trigger generation of the delegation tokens and associated Go file.
 func TestUpdate(t *testing.T) {
@@ -35,190 +17,10 @@ func TestUpdate(t *testing.T) {
 	}
 }
 
-type newDelegationParams struct {
-	privKey crypto.PrivKey
-	aud     did.DID
-	sub     did.DID
-	cmd     command.Command
-	pol     policy.Policy
-	opts    []delegation.Option
-}
-
-type newDelegationParamsVariant func(*newDelegationParams)
-
-type token struct {
-	name string
-	id   cid.Cid
-}
-
-type proof struct {
-	name string
-	prf  []cid.Cid
-}
-
-type generator struct {
-	dlgs   []token
-	chains []proof
-}
-
-type acc struct {
-	name  string
-	chain []cid.Cid
-}
-
-type variant struct {
-	name    string
-	variant func(*newDelegationParams)
-}
-
-func noopVariant() variant {
-	return variant{
-		name:    "",
-		variant: func(_ *newDelegationParams) {},
-	}
-}
-
 func update(t *testing.T) {
 	t.Helper()
 
 	gen := &generator{}
-	gen.chainPersonas(t, didtest.Personas(t), acc{}, noopVariant())
-	gen.writeGoFile(t)
-}
-
-func (g *generator) chainPersonas(t *testing.T, personas []didtest.Persona, acc acc, vari variant) {
-	t.Helper()
-
-	acc.name += personas[0].Name(t)
-	g.createProofChain(t, acc.name+vari.name, acc.chain)
-
-	if len(personas) < 2 {
-		return
-	}
-
-	name := personas[0].Name(t) + personas[1].Name(t)
-
-	params := newDelegationParams{
-		privKey: personas[0].PrivKey(t),
-		aud:     personas[1].DID(t),
-		cmd:     NominalCommand,
-		pol:     policytest.EmptyPolicy(t),
-		opts: []delegation.Option{
-			delegation.WithSubject(didtest.PersonaAlice.DID(t)),
-			delegation.WithNonce(constantNonce),
-		},
-	}
-
-	// Create each nominal token and continue the chain
-	id := g.createDelegation(t, params, name, vari)
-	acc.chain = append(acc.chain, id)
-	g.chainPersonas(t, personas[1:], acc, vari)
-
-	// If the user is Carol, create variants for each invalid and/or optional
-	// parameter and also continue the chain
-	if personas[0] == didtest.PersonaCarol {
-		variants := []variant{
-			{name: "InvalidExpandedCommand", variant: func(p *newDelegationParams) {
-				p.cmd = ExpandedCommand
-			}},
-			{name: "ValidAttenuatedCommand", variant: func(p *newDelegationParams) {
-				p.cmd = AttenuatedCommand
-			}},
-			{name: "InvalidSubject", variant: func(p *newDelegationParams) {
-				p.opts = append(p.opts, delegation.WithSubject(didtest.PersonaBob.DID(t)))
-			}},
-			{name: "InvalidExpired", variant: func(p *newDelegationParams) {
-				p.opts = append(p.opts, delegation.WithExpiration(time.Now().Add(time.Second)))
-			}},
-			{name: "InvalidInactive", variant: func(p *newDelegationParams) {
-				nbf, err := time.Parse(time.RFC3339, "2070-01-01T00:00:00Z")
-				require.NoError(t, err)
-
-				p.opts = append(p.opts, delegation.WithNotBefore(nbf))
-			}},
-		}
-
-		// Start a branch in the recursion for each of the variants
-		for _, v := range variants {
-			id := g.createDelegation(t, params, name, v)
-
-			// replace the previous Carol token id with the one from the variant
-			acc.chain[len(acc.chain)-1] = id
-			g.chainPersonas(t, personas[1:], acc, v)
-		}
-	}
-}
-
-func (g *generator) createDelegation(t *testing.T, params newDelegationParams, name string, vari variant) cid.Cid {
-	t.Helper()
-
-	vari.variant(&params)
-
-	tkn, err := delegation.New(params.privKey, params.aud, params.cmd, params.pol, params.opts...)
-	require.NoError(t, err)
-
-	data, id, err := tkn.ToSealed(params.privKey)
-	require.NoError(t, err)
-
-	require.NoError(t, os.WriteFile(filepath.Join(tokenDir, tokenNamePrefix+name+vari.name+tokenExt), data, 0o644))
-
-	g.dlgs = append(g.dlgs, token{
-		name: tokenNamePrefix + name + vari.name,
-		id:   id,
-	})
-
-	return id
-}
-
-func (g *generator) createProofChain(t *testing.T, name string, prf []cid.Cid) {
-	t.Helper()
-
-	if len(prf) < 1 {
-		return
-	}
-
-	clone := make([]cid.Cid, len(prf))
-	copy(clone, prf)
-
-	g.chains = append(g.chains, proof{
-		name: proorChainNamePrefix + name,
-		prf:  clone,
-	})
-}
-
-func (g *generator) writeGoFile(t *testing.T) {
-	t.Helper()
-
-	file := jen.NewFile("delegationtest")
-	file.HeaderComment("Code generated by delegationtest - DO NOT EDIT.")
-
-	refs := map[cid.Cid]string{}
-
-	for _, d := range g.dlgs {
-		refs[d.id] = d.name + "CID"
-
-		file.Var().Defs(
-			jen.Id(d.name+"CID").Op("=").Qual("github.com/ipfs/go-cid", "MustParse").Call(jen.Lit(d.id.String())),
-			jen.Id(d.name).Op("=").Id("mustGetDelegation").Call(jen.Id(d.name+"CID")),
-		)
-		file.Line()
-	}
-
-	for _, c := range g.chains {
-		g := jen.CustomFunc(jen.Options{
-			Multi:     true,
-			Separator: ",",
-			Close:     "\n",
-		}, func(g *jen.Group) {
-			slices.Reverse(c.prf)
-			for _, p := range c.prf {
-				g.Id(refs[p])
-			}
-		})
-
-		file.Var().Id(c.name).Op("=").Index().Qual("github.com/ipfs/go-cid", "Cid").Values(g)
-		file.Line()
-	}
-
-	require.NoError(t, file.Save("token_gen.go"))
+	require.NoError(t, gen.chainPersonas(didtest.Personas(), acc{}, noopVariant()))
+	require.NoError(t, gen.writeGoFile())
 }

token/delegation/delegationtest/token.go

@@ -38,27 +38,29 @@ var ProofEmpty = []cid.Cid{}
 //go:embed data
 var fs embed.FS
 
-var (
-	once sync.Once
-	ldr  delegation.Loader
-	err  error
-)
-
 var _ delegation.Loader = (*delegationLoader)(nil)
 
 type delegationLoader struct {
 	tokens map[cid.Cid]*delegation.Token
 }
 
+var (
+	once sync.Once
+	ldr  delegation.Loader
+)
+
 // GetDelegationLoader returns a singleton instance of a test
 // DelegationLoader containing all the tokens present in the data/
 // directory.
-func GetDelegationLoader() (delegation.Loader, error) {
+func GetDelegationLoader() delegation.Loader {
 	once.Do(func() {
+		var err error
 		ldr, err = loadDelegations()
+		if err != nil {
+			panic(err)
+		}
 	})
-
-	return ldr, err
+	return ldr
 }
 
 // GetDelegation implements invocation.DelegationLoader.
@@ -101,12 +103,7 @@ func loadDelegations() (delegation.Loader, error) {
 // GetDelegation is a shortcut that gets (or creates) the DelegationLoader
 // and attempts to return the token referenced by the provided CID.
 func GetDelegation(id cid.Cid) (*delegation.Token, error) {
-	ldr, err := GetDelegationLoader()
-	if err != nil {
-		return nil, err
-	}
-
-	return ldr.GetDelegation(id)
+	return GetDelegationLoader().GetDelegation(id)
 }
 
 func mustGetDelegation(id cid.Cid) *delegation.Token {
@@ -114,6 +111,5 @@ func mustGetDelegation(id cid.Cid) *delegation.Token {
 	if err != nil {
 		panic(err)
 	}
-
 	return tkn
 }

token/delegation/delegationtest/token_gen.go

@@ -30,78 +30,78 @@ var (
 )
 
 var (
-	TokenCarolDanInvalidExpandedCommandCID = gocid.MustParse("bafyreid3m3pk53gqgp5rlzqhvpedbwsqbidqlp4yz64vknwbzj7bxrmsr4")
-	TokenCarolDanInvalidExpandedCommand    = mustGetDelegation(TokenCarolDanInvalidExpandedCommandCID)
+	TokenCarolDan_InvalidExpandedCommandCID = gocid.MustParse("bafyreid3m3pk53gqgp5rlzqhvpedbwsqbidqlp4yz64vknwbzj7bxrmsr4")
+	TokenCarolDan_InvalidExpandedCommand    = mustGetDelegation(TokenCarolDan_InvalidExpandedCommandCID)
 )
 
 var (
-	TokenDanErinInvalidExpandedCommandCID = gocid.MustParse("bafyreifn4sy5onwajx3kqvot5mib6m6xarzrqjozqbzgmzpmc5ox3g2uzm")
-	TokenDanErinInvalidExpandedCommand    = mustGetDelegation(TokenDanErinInvalidExpandedCommandCID)
+	TokenDanErin_InvalidExpandedCommandCID = gocid.MustParse("bafyreifn4sy5onwajx3kqvot5mib6m6xarzrqjozqbzgmzpmc5ox3g2uzm")
+	TokenDanErin_InvalidExpandedCommand    = mustGetDelegation(TokenDanErin_InvalidExpandedCommandCID)
 )
 
 var (
-	TokenErinFrankInvalidExpandedCommandCID = gocid.MustParse("bafyreidmpgd36jznmq42bs34o4qi3fcbrsh4idkg6ejahudejzwb76fwxe")
-	TokenErinFrankInvalidExpandedCommand    = mustGetDelegation(TokenErinFrankInvalidExpandedCommandCID)
+	TokenErinFrank_InvalidExpandedCommandCID = gocid.MustParse("bafyreidmpgd36jznmq42bs34o4qi3fcbrsh4idkg6ejahudejzwb76fwxe")
+	TokenErinFrank_InvalidExpandedCommand    = mustGetDelegation(TokenErinFrank_InvalidExpandedCommandCID)
 )
 
 var (
-	TokenCarolDanValidAttenuatedCommandCID = gocid.MustParse("bafyreiekhtm237vyapk3c6voeb5lnz54crebqdqi3x4wn4u4cbrrhzsqfe")
-	TokenCarolDanValidAttenuatedCommand    = mustGetDelegation(TokenCarolDanValidAttenuatedCommandCID)
+	TokenCarolDan_ValidAttenuatedCommandCID = gocid.MustParse("bafyreiekhtm237vyapk3c6voeb5lnz54crebqdqi3x4wn4u4cbrrhzsqfe")
+	TokenCarolDan_ValidAttenuatedCommand    = mustGetDelegation(TokenCarolDan_ValidAttenuatedCommandCID)
 )
 
 var (
-	TokenDanErinValidAttenuatedCommandCID = gocid.MustParse("bafyreicrvzqferyy7rgo75l5rn6r2nl7zyeexxjmu3dm4ff7rn2coblj4y")
-	TokenDanErinValidAttenuatedCommand    = mustGetDelegation(TokenDanErinValidAttenuatedCommandCID)
+	TokenDanErin_ValidAttenuatedCommandCID = gocid.MustParse("bafyreicrvzqferyy7rgo75l5rn6r2nl7zyeexxjmu3dm4ff7rn2coblj4y")
+	TokenDanErin_ValidAttenuatedCommand    = mustGetDelegation(TokenDanErin_ValidAttenuatedCommandCID)
 )
 
 var (
-	TokenErinFrankValidAttenuatedCommandCID = gocid.MustParse("bafyreie6fhspk53kplcc2phla3e7z7fzldlbmmpuwk6nbow5q6s2zjmw2q")
-	TokenErinFrankValidAttenuatedCommand    = mustGetDelegation(TokenErinFrankValidAttenuatedCommandCID)
+	TokenErinFrank_ValidAttenuatedCommandCID = gocid.MustParse("bafyreie6fhspk53kplcc2phla3e7z7fzldlbmmpuwk6nbow5q6s2zjmw2q")
+	TokenErinFrank_ValidAttenuatedCommand    = mustGetDelegation(TokenErinFrank_ValidAttenuatedCommandCID)
 )
 
 var (
-	TokenCarolDanInvalidSubjectCID = gocid.MustParse("bafyreifgksz6756if42tnc6rqsnbaa2u3fdrveo7ek44lnj2d64d5sw26u")
-	TokenCarolDanInvalidSubject    = mustGetDelegation(TokenCarolDanInvalidSubjectCID)
+	TokenCarolDan_InvalidSubjectCID = gocid.MustParse("bafyreifgksz6756if42tnc6rqsnbaa2u3fdrveo7ek44lnj2d64d5sw26u")
+	TokenCarolDan_InvalidSubject    = mustGetDelegation(TokenCarolDan_InvalidSubjectCID)
 )
 
 var (
-	TokenDanErinInvalidSubjectCID = gocid.MustParse("bafyreibdwew5nypsxrm4fq73wu6hw3lgwwiolj3bi33xdrbgcf3ogm6fty")
-	TokenDanErinInvalidSubject    = mustGetDelegation(TokenDanErinInvalidSubjectCID)
+	TokenDanErin_InvalidSubjectCID = gocid.MustParse("bafyreibdwew5nypsxrm4fq73wu6hw3lgwwiolj3bi33xdrbgcf3ogm6fty")
+	TokenDanErin_InvalidSubject    = mustGetDelegation(TokenDanErin_InvalidSubjectCID)
 )
 
 var (
-	TokenErinFrankInvalidSubjectCID = gocid.MustParse("bafyreicr364mj3n7x4iyhcksxypelktcqkkw3ptg7ggxtqegw3p3mr6zc4")
-	TokenErinFrankInvalidSubject    = mustGetDelegation(TokenErinFrankInvalidSubjectCID)
+	TokenErinFrank_InvalidSubjectCID = gocid.MustParse("bafyreicr364mj3n7x4iyhcksxypelktcqkkw3ptg7ggxtqegw3p3mr6zc4")
+	TokenErinFrank_InvalidSubject    = mustGetDelegation(TokenErinFrank_InvalidSubjectCID)
 )
 
 var (
-	TokenCarolDanInvalidExpiredCID = gocid.MustParse("bafyreibgtlioorouqpwr6olk6boc3pprl5tx5xs6zpfnv3pvxtggueofii")
-	TokenCarolDanInvalidExpired    = mustGetDelegation(TokenCarolDanInvalidExpiredCID)
+	TokenCarolDan_InvalidExpiredCID = gocid.MustParse("bafyreigenypixaxvhzlry5rjnywvjyl4xvzlzxz2ui74uzys7qdhos4bbu")
+	TokenCarolDan_InvalidExpired    = mustGetDelegation(TokenCarolDan_InvalidExpiredCID)
 )
 
 var (
-	TokenDanErinInvalidExpiredCID = gocid.MustParse("bafyreidhq3hjsfrucbecgcjf2nkcgmq3sh3m5gjxz23vzcaynozs5p3uh4")
-	TokenDanErinInvalidExpired    = mustGetDelegation(TokenDanErinInvalidExpiredCID)
+	TokenDanErin_InvalidExpiredCID = gocid.MustParse("bafyreifvnfb7zqocpdysedcvjkb4y7tqfuziuqjhbbdoay4zg33pwpbzqi")
+	TokenDanErin_InvalidExpired    = mustGetDelegation(TokenDanErin_InvalidExpiredCID)
 )
 
 var (
-	TokenErinFrankInvalidExpiredCID = gocid.MustParse("bafyreido4om3y3ttkmp4c4gxm6pqug76vu3aekb666vdp6zewpvir5zs7u")
-	TokenErinFrankInvalidExpired    = mustGetDelegation(TokenErinFrankInvalidExpiredCID)
+	TokenErinFrank_InvalidExpiredCID = gocid.MustParse("bafyreicvydzt3obkqx7krmoi3zu4tlirlksibxfks5jc7vlvjxjamv2764")
+	TokenErinFrank_InvalidExpired    = mustGetDelegation(TokenErinFrank_InvalidExpiredCID)
 )
 
 var (
-	TokenCarolDanInvalidInactiveCID = gocid.MustParse("bafyreicea5y2nvlitvxijkupeavtg23i7ktjk3uejnaquguurzptiabk4u")
-	TokenCarolDanInvalidInactive    = mustGetDelegation(TokenCarolDanInvalidInactiveCID)
+	TokenCarolDan_InvalidInactiveCID = gocid.MustParse("bafyreicea5y2nvlitvxijkupeavtg23i7ktjk3uejnaquguurzptiabk4u")
+	TokenCarolDan_InvalidInactive    = mustGetDelegation(TokenCarolDan_InvalidInactiveCID)
 )
 
 var (
-	TokenDanErinInvalidInactiveCID = gocid.MustParse("bafyreifsgqzkmxj2vexuts3z766mwcjreiisjg2jykyzf7tbj5sclutpvq")
-	TokenDanErinInvalidInactive    = mustGetDelegation(TokenDanErinInvalidInactiveCID)
+	TokenDanErin_InvalidInactiveCID = gocid.MustParse("bafyreifsgqzkmxj2vexuts3z766mwcjreiisjg2jykyzf7tbj5sclutpvq")
+	TokenDanErin_InvalidInactive    = mustGetDelegation(TokenDanErin_InvalidInactiveCID)
 )
 
 var (
-	TokenErinFrankInvalidInactiveCID = gocid.MustParse("bafyreifbfegon24c6dndiqyktahzs65vhyasrygbw7nhsvojn6distsdre")
-	TokenErinFrankInvalidInactive    = mustGetDelegation(TokenErinFrankInvalidInactiveCID)
+	TokenErinFrank_InvalidInactiveCID = gocid.MustParse("bafyreifbfegon24c6dndiqyktahzs65vhyasrygbw7nhsvojn6distsdre")
+	TokenErinFrank_InvalidInactive    = mustGetDelegation(TokenErinFrank_InvalidInactiveCID)
 )
 
 var ProofAliceBob = []gocid.Cid{
@@ -134,107 +134,107 @@ var ProofAliceBobCarolDanErinFrank = []gocid.Cid{
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanInvalidExpandedCommand = []gocid.Cid{
-	TokenCarolDanInvalidExpandedCommandCID,
+var ProofAliceBobCarolDan_InvalidExpandedCommand = []gocid.Cid{
+	TokenCarolDan_InvalidExpandedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinInvalidExpandedCommand = []gocid.Cid{
-	TokenDanErinInvalidExpandedCommandCID,
-	TokenCarolDanInvalidExpandedCommandCID,
+var ProofAliceBobCarolDanErin_InvalidExpandedCommand = []gocid.Cid{
+	TokenDanErin_InvalidExpandedCommandCID,
+	TokenCarolDan_InvalidExpandedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinFrankInvalidExpandedCommand = []gocid.Cid{
-	TokenErinFrankInvalidExpandedCommandCID,
-	TokenDanErinInvalidExpandedCommandCID,
-	TokenCarolDanInvalidExpandedCommandCID,
+var ProofAliceBobCarolDanErinFrank_InvalidExpandedCommand = []gocid.Cid{
+	TokenErinFrank_InvalidExpandedCommandCID,
+	TokenDanErin_InvalidExpandedCommandCID,
+	TokenCarolDan_InvalidExpandedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanValidAttenuatedCommand = []gocid.Cid{
-	TokenCarolDanValidAttenuatedCommandCID,
+var ProofAliceBobCarolDan_ValidAttenuatedCommand = []gocid.Cid{
+	TokenCarolDan_ValidAttenuatedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinValidAttenuatedCommand = []gocid.Cid{
-	TokenDanErinValidAttenuatedCommandCID,
-	TokenCarolDanValidAttenuatedCommandCID,
+var ProofAliceBobCarolDanErin_ValidAttenuatedCommand = []gocid.Cid{
+	TokenDanErin_ValidAttenuatedCommandCID,
+	TokenCarolDan_ValidAttenuatedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinFrankValidAttenuatedCommand = []gocid.Cid{
-	TokenErinFrankValidAttenuatedCommandCID,
-	TokenDanErinValidAttenuatedCommandCID,
-	TokenCarolDanValidAttenuatedCommandCID,
+var ProofAliceBobCarolDanErinFrank_ValidAttenuatedCommand = []gocid.Cid{
+	TokenErinFrank_ValidAttenuatedCommandCID,
+	TokenDanErin_ValidAttenuatedCommandCID,
+	TokenCarolDan_ValidAttenuatedCommandCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanInvalidSubject = []gocid.Cid{
-	TokenCarolDanInvalidSubjectCID,
+var ProofAliceBobCarolDan_InvalidSubject = []gocid.Cid{
+	TokenCarolDan_InvalidSubjectCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinInvalidSubject = []gocid.Cid{
-	TokenDanErinInvalidSubjectCID,
-	TokenCarolDanInvalidSubjectCID,
+var ProofAliceBobCarolDanErin_InvalidSubject = []gocid.Cid{
+	TokenDanErin_InvalidSubjectCID,
+	TokenCarolDan_InvalidSubjectCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinFrankInvalidSubject = []gocid.Cid{
-	TokenErinFrankInvalidSubjectCID,
-	TokenDanErinInvalidSubjectCID,
-	TokenCarolDanInvalidSubjectCID,
+var ProofAliceBobCarolDanErinFrank_InvalidSubject = []gocid.Cid{
+	TokenErinFrank_InvalidSubjectCID,
+	TokenDanErin_InvalidSubjectCID,
+	TokenCarolDan_InvalidSubjectCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanInvalidExpired = []gocid.Cid{
-	TokenCarolDanInvalidExpiredCID,
+var ProofAliceBobCarolDan_InvalidExpired = []gocid.Cid{
+	TokenCarolDan_InvalidExpiredCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinInvalidExpired = []gocid.Cid{
-	TokenDanErinInvalidExpiredCID,
-	TokenCarolDanInvalidExpiredCID,
+var ProofAliceBobCarolDanErin_InvalidExpired = []gocid.Cid{
+	TokenDanErin_InvalidExpiredCID,
+	TokenCarolDan_InvalidExpiredCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinFrankInvalidExpired = []gocid.Cid{
-	TokenErinFrankInvalidExpiredCID,
-	TokenDanErinInvalidExpiredCID,
-	TokenCarolDanInvalidExpiredCID,
+var ProofAliceBobCarolDanErinFrank_InvalidExpired = []gocid.Cid{
+	TokenErinFrank_InvalidExpiredCID,
+	TokenDanErin_InvalidExpiredCID,
+	TokenCarolDan_InvalidExpiredCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanInvalidInactive = []gocid.Cid{
-	TokenCarolDanInvalidInactiveCID,
+var ProofAliceBobCarolDan_InvalidInactive = []gocid.Cid{
+	TokenCarolDan_InvalidInactiveCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinInvalidInactive = []gocid.Cid{
-	TokenDanErinInvalidInactiveCID,
-	TokenCarolDanInvalidInactiveCID,
+var ProofAliceBobCarolDanErin_InvalidInactive = []gocid.Cid{
+	TokenDanErin_InvalidInactiveCID,
+	TokenCarolDan_InvalidInactiveCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }
 
-var ProofAliceBobCarolDanErinFrankInvalidInactive = []gocid.Cid{
-	TokenErinFrankInvalidInactiveCID,
-	TokenDanErinInvalidInactiveCID,
-	TokenCarolDanInvalidInactiveCID,
+var ProofAliceBobCarolDanErinFrank_InvalidInactive = []gocid.Cid{
+	TokenErinFrank_InvalidInactiveCID,
+	TokenDanErin_InvalidInactiveCID,
+	TokenCarolDan_InvalidInactiveCID,
 	TokenBobCarolCID,
 	TokenAliceBobCID,
 }

token/delegation/delegationtest/token_test.go

@@ -12,8 +12,6 @@ import (
 )
 
 func TestGetDelegation(t *testing.T) {
-	t.Parallel()
-
 	t.Run("passes with valid CID", func(t *testing.T) {
 		t.Parallel()
 

token/invocation/invocation_test.go

@@ -39,7 +39,7 @@ func TestToken_ExecutionAllowed(t *testing.T) {
 	t.Run("passes - proof chain attenuates command", func(t *testing.T) {
 		t.Parallel()
 
-		testPasses(t, didtest.PersonaFrank, delegationtest.AttenuatedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrankValidAttenuatedCommand)
+		testPasses(t, didtest.PersonaFrank, delegationtest.AttenuatedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_ValidAttenuatedCommand)
 	})
 
 	t.Run("passes - invocation attenuates command", func(t *testing.T) {
@@ -67,14 +67,14 @@ func TestToken_ExecutionAllowed(t *testing.T) {
 	t.Run("fails - referenced delegation expired", func(t *testing.T) {
 		t.Parallel()
 
-		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrankInvalidExpired)
+		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpired)
 
 	})
 
 	t.Run("fails - referenced delegation inactive", func(t *testing.T) {
 		t.Parallel()
 
-		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrankInvalidInactive)
+		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidInactive)
 	})
 
 	t.Run("fails - last (or only) delegation not root", func(t *testing.T) {
@@ -101,7 +101,7 @@ func TestToken_ExecutionAllowed(t *testing.T) {
 	t.Run("fails - proof chain expands command", func(t *testing.T) {
 		t.Parallel()
 
-		testFails(t, invocation.ErrCommandNotCovered, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrankInvalidExpandedCommand)
+		testFails(t, invocation.ErrCommandNotCovered, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpandedCommand)
 	})
 
 	t.Run("fails - invocation expands command", func(t *testing.T) {
@@ -113,20 +113,19 @@ func TestToken_ExecutionAllowed(t *testing.T) {
 	t.Run("fails - inconsistent subject", func(t *testing.T) {
 		t.Parallel()
 
-		testFails(t, invocation.ErrWrongSub, didtest.PersonaFrank, delegationtest.ExpandedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrankInvalidSubject)
+		testFails(t, invocation.ErrWrongSub, didtest.PersonaFrank, delegationtest.ExpandedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidSubject)
 	})
 }
 
 func test(t *testing.T, persona didtest.Persona, cmd command.Command, args *args.Args, prf []cid.Cid, opts ...invocation.Option) error {
 	t.Helper()
 
-	tkn, err := invocation.New(persona.DID(t), didtest.PersonaAlice.DID(t), cmd, prf, opts...)
+	// TODO: use the args and add minimal test to check that they are verified against the policy
+
+	tkn, err := invocation.New(persona.DID(), didtest.PersonaAlice.DID(), cmd, prf, opts...)
 	require.NoError(t, err)
 
-	ldr, err := delegationtest.GetDelegationLoader()
-	require.NoError(t, err)
-
-	return tkn.ExecutionAllowed(ldr)
+	return tkn.ExecutionAllowed(delegationtest.GetDelegationLoader())
 }
 
 func testFails(t *testing.T, expErr error, persona didtest.Persona, cmd command.Command, args *args.Args, prf []cid.Cid, opts ...invocation.Option) {