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authorGuillaume Ballet <gballet@gmail.com>2019-01-15 23:45:52 +0800
committerGitHub <noreply@github.com>2019-01-15 23:45:52 +0800
commit115b1c38ac45d83b90770ab80e39665e093fe804 (patch)
tree0cb23dc19c6d38b56513fc242de9a5e38744dc9c /accounts
parent4aeeecfded1310e88579d9eaf47c33967e496f8f (diff)
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accounts/abi: Add tests for reflection ahead of refactor (#18434)
Diffstat (limited to 'accounts')
-rw-r--r--accounts/abi/reflect_test.go191
1 files changed, 191 insertions, 0 deletions
diff --git a/accounts/abi/reflect_test.go b/accounts/abi/reflect_test.go
new file mode 100644
index 000000000..c425e6e54
--- /dev/null
+++ b/accounts/abi/reflect_test.go
@@ -0,0 +1,191 @@
+// Copyright 2019 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package abi
+
+import (
+ "reflect"
+ "testing"
+)
+
+type reflectTest struct {
+ name string
+ args []string
+ struc interface{}
+ want map[string]string
+ err string
+}
+
+var reflectTests = []reflectTest{
+ {
+ name: "OneToOneCorrespondance",
+ args: []string{"fieldA"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ },
+ },
+ {
+ name: "MissingFieldsInStruct",
+ args: []string{"fieldA", "fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ },
+ },
+ {
+ name: "MoreFieldsInStructThanArgs",
+ args: []string{"fieldA"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ FieldB int
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ },
+ },
+ {
+ name: "MissingFieldInArgs",
+ args: []string{"fieldA"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ FieldB int `abi:"fieldB"`
+ }{},
+ err: "struct: abi tag 'fieldB' defined but not found in abi",
+ },
+ {
+ name: "NoAbiDescriptor",
+ args: []string{"fieldA"},
+ struc: struct {
+ FieldA int
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ },
+ },
+ {
+ name: "NoArgs",
+ args: []string{},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ }{},
+ err: "struct: abi tag 'fieldA' defined but not found in abi",
+ },
+ {
+ name: "DifferentName",
+ args: []string{"fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldB"`
+ }{},
+ want: map[string]string{
+ "fieldB": "FieldA",
+ },
+ },
+ {
+ name: "DifferentName",
+ args: []string{"fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldB"`
+ }{},
+ want: map[string]string{
+ "fieldB": "FieldA",
+ },
+ },
+ {
+ name: "MultipleFields",
+ args: []string{"fieldA", "fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ FieldB int `abi:"fieldB"`
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ "fieldB": "FieldB",
+ },
+ },
+ {
+ name: "MultipleFieldsABIMissing",
+ args: []string{"fieldA", "fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldA"`
+ FieldB int
+ }{},
+ want: map[string]string{
+ "fieldA": "FieldA",
+ "fieldB": "FieldB",
+ },
+ },
+ {
+ name: "NameConflict",
+ args: []string{"fieldB"},
+ struc: struct {
+ FieldA int `abi:"fieldB"`
+ FieldB int
+ }{},
+ err: "abi: multiple variables maps to the same abi field 'fieldB'",
+ },
+ {
+ name: "Underscored",
+ args: []string{"_"},
+ struc: struct {
+ FieldA int
+ }{},
+ err: "abi: purely underscored output cannot unpack to struct",
+ },
+ {
+ name: "DoubleMapping",
+ args: []string{"fieldB", "fieldC", "fieldA"},
+ struc: struct {
+ FieldA int `abi:"fieldC"`
+ FieldB int
+ }{},
+ err: "abi: multiple outputs mapping to the same struct field 'FieldA'",
+ },
+ {
+ name: "AlreadyMapped",
+ args: []string{"fieldB", "fieldB"},
+ struc: struct {
+ FieldB int `abi:"fieldB"`
+ }{},
+ err: "struct: abi tag in 'FieldB' already mapped",
+ },
+}
+
+func TestReflectNameToStruct(t *testing.T) {
+ for _, test := range reflectTests {
+ t.Run(test.name, func(t *testing.T) {
+ m, err := mapArgNamesToStructFields(test.args, reflect.ValueOf(test.struc))
+ if len(test.err) > 0 {
+ if err == nil || err.Error() != test.err {
+ t.Fatalf("Invalid error: expected %v, got %v", test.err, err)
+ }
+ } else {
+ if err != nil {
+ t.Fatalf("Unexpected error: %v", err)
+ }
+ for fname := range test.want {
+ if m[fname] != test.want[fname] {
+ t.Fatalf("Incorrect value for field %s: expected %v, got %v", fname, test.want[fname], m[fname])
+ }
+ }
+ }
+ })
+ }
+}