108 lines
3.0 KiB
Go
108 lines
3.0 KiB
Go
// Copyright 2022 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 main
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"go/ast"
|
|
"go/importer"
|
|
"go/parser"
|
|
"go/token"
|
|
"go/types"
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
)
|
|
|
|
// Package RLP is loaded only once and reused for all tests.
|
|
var (
|
|
testFset = token.NewFileSet()
|
|
testImporter = importer.ForCompiler(testFset, "source", nil).(types.ImporterFrom)
|
|
testPackageRLP *types.Package
|
|
)
|
|
|
|
func init() {
|
|
cwd, err := os.Getwd()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
testPackageRLP, err = testImporter.ImportFrom(pathOfPackageRLP, cwd, 0)
|
|
if err != nil {
|
|
panic(fmt.Errorf("can't load package RLP: %v", err))
|
|
}
|
|
}
|
|
|
|
var tests = []string{"uints", "nil", "rawvalue", "optional", "bigint"}
|
|
|
|
func TestOutput(t *testing.T) {
|
|
for _, test := range tests {
|
|
test := test
|
|
t.Run(test, func(t *testing.T) {
|
|
inputFile := filepath.Join("testdata", test+".in.txt")
|
|
outputFile := filepath.Join("testdata", test+".out.txt")
|
|
bctx, typ, err := loadTestSource(inputFile, "Test")
|
|
if err != nil {
|
|
t.Fatal("error loading test source:", err)
|
|
}
|
|
output, err := bctx.generate(typ, true, true)
|
|
if err != nil {
|
|
t.Fatal("error in generate:", err)
|
|
}
|
|
|
|
// Set this environment variable to regenerate the test outputs.
|
|
if os.Getenv("WRITE_TEST_FILES") != "" {
|
|
os.WriteFile(outputFile, output, 0644)
|
|
}
|
|
|
|
// Check if output matches.
|
|
wantOutput, err := os.ReadFile(outputFile)
|
|
if err != nil {
|
|
t.Fatal("error loading expected test output:", err)
|
|
}
|
|
if !bytes.Equal(output, wantOutput) {
|
|
t.Fatal("output mismatch:\n", string(output))
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func loadTestSource(file string, typeName string) (*buildContext, *types.Named, error) {
|
|
// Load the test input.
|
|
content, err := os.ReadFile(file)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
f, err := parser.ParseFile(testFset, file, content, 0)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
conf := types.Config{Importer: testImporter}
|
|
pkg, err := conf.Check("test", testFset, []*ast.File{f}, nil)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
// Find the test struct.
|
|
bctx := newBuildContext(testPackageRLP)
|
|
typ, err := lookupStructType(pkg.Scope(), typeName)
|
|
if err != nil {
|
|
return nil, nil, fmt.Errorf("can't find type %s: %v", typeName, err)
|
|
}
|
|
return bctx, typ, nil
|
|
}
|