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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssautil_test
import (
"go/ast"
"go/importer"
"go/parser"
"go/token"
"go/types"
"os"
"testing"
"golang.org/x/tools/go/ssa/ssautil"
)
const hello = `package main
import "fmt"
func main() {
fmt.Println("Hello, world")
}
`
func TestBuildPackage(t *testing.T) {
// There is a more substantial test of BuildPackage and the
// SSA program it builds in ../ssa/builder_test.go.
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "hello.go", hello, 0)
if err != nil {
t.Fatal(err)
}
pkg := types.NewPackage("hello", "")
ssapkg, _, err := ssautil.BuildPackage(&types.Config{Importer: importer.Default()}, fset, pkg, []*ast.File{f}, 0)
if err != nil {
t.Fatal(err)
}
if pkg.Name() != "main" {
t.Errorf("pkg.Name() = %s, want main", pkg.Name())
}
if ssapkg.Func("main") == nil {
ssapkg.WriteTo(os.Stderr)
t.Errorf("ssapkg has no main function")
}
}
func TestBuildPackage_MissingImport(t *testing.T) {
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "bad.go", `package bad; import "missing"`, 0)
if err != nil {
t.Fatal(err)
}
pkg := types.NewPackage("bad", "")
ssapkg, _, err := ssautil.BuildPackage(new(types.Config), fset, pkg, []*ast.File{f}, 0)
if err == nil || ssapkg != nil {
t.Fatal("BuildPackage succeeded unexpectedly")
}
}
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