Issue#261: Add fuzz test

did/key_fuzz_test.go

@@ -0,0 +1,43 @@
+package did
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func FuzzGenerateAndDecode(f *testing.F) {
+	keytypes := GetSupportedDIDKeyTypes()
+	f.Fuzz(func(t *testing.T, a uint) {
+		kt := keytypes[a%uint(len(keytypes))]
+
+		privKey, didKey, err := GenerateDIDKey(kt)
+		assert.NotEmpty(t, privKey)
+
+		expectedLdKeyType, _ := KeyTypeToLDKeyType(kt)
+
+		pubKey, ldKeyType, cryptoKeyType, err := didKey.Decode()
+		assert.NoError(t, err)
+		assert.NotEmpty(t, pubKey)
+		assert.Equal(t, ldKeyType, expectedLdKeyType)
+		assert.Equal(t, cryptoKeyType, kt)
+	})
+}
+
+func FuzzGenerateAndResolve(f *testing.F) {
+	keytypes := GetSupportedDIDKeyTypes()
+	resolvers := []Resolution{KeyResolver{}, WebResolver{}, PKHResolver{}, PeerResolver{}}
+	resolver, _ := NewResolver(resolvers...)
+
+	f.Fuzz(func(t *testing.T, a uint) {
+		kt := keytypes[a%uint(len(keytypes))]
+
+		_, didKey, err := GenerateDIDKey(kt)
+		assert.NoError(t, err)
+
+		doc, err := resolver.Resolve(didKey.String())
+		assert.NoError(t, err)
+		assert.NotEmpty(t, doc)
+		assert.Equal(t, didKey.String(), doc.DIDDocument.ID)
+	})
+}