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// Copyright 2013 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 gccgoimporter
import (
"bytes"
"go/types"
"strings"
"testing"
"text/scanner"
)
var typeParserTests = []struct {
id, typ, want, underlying, methods string
}{
{id: "foo", typ: "<type -1>", want: "int8"},
{id: "foo", typ: "<type 1 *<type -19>>", want: "*error"},
{id: "foo", typ: "<type 1 *any>", want: "unsafe.Pointer"},
{id: "foo", typ: "<type 1 \"Bar\" <type 2 *<type 1>>>", want: "foo.Bar", underlying: "*foo.Bar"},
{id: "foo", typ: "<type 1 \"bar.Foo\" \"bar\" <type -1>\n func (? <type 1>) M ()\n>", want: "bar.Foo", underlying: "int8", methods: "func (bar.Foo).M()"},
{id: "foo", typ: "<type 1 \".bar.foo\" \"bar\" <type -1>>", want: "bar.foo", underlying: "int8"},
{id: "foo", typ: "<type 1 []<type -1>>", want: "[]int8"},
{id: "foo", typ: "<type 1 [42]<type -1>>", want: "[42]int8"},
{id: "foo", typ: "<type 1 map [<type -1>] <type -2>>", want: "map[int8]int16"},
{id: "foo", typ: "<type 1 chan <type -1>>", want: "chan int8"},
{id: "foo", typ: "<type 1 chan <- <type -1>>", want: "<-chan int8"},
{id: "foo", typ: "<type 1 chan -< <type -1>>", want: "chan<- int8"},
{id: "foo", typ: "<type 1 struct { I8 <type -1>; I16 <type -2> \"i16\"; }>", want: "struct{I8 int8; I16 int16 \"i16\"}"},
{id: "foo", typ: "<type 1 interface { Foo (a <type -1>, b <type -2>) <type -1>; Bar (? <type -2>, ? ...<type -1>) (? <type -2>, ? <type -1>); Baz (); }>", want: "interface{Bar(int16, ...int8) (int16, int8); Baz(); Foo(a int8, b int16) int8}"},
{id: "foo", typ: "<type 1 (? <type -1>) <type -2>>", want: "func(int8) int16"},
}
func TestTypeParser(t *testing.T) {
for _, test := range typeParserTests {
var p parser
p.init("test.gox", strings.NewReader(test.typ), make(map[string]*types.Package))
p.pkgname = test.id
p.pkgpath = test.id
p.maybeCreatePackage()
typ := p.parseType(p.pkg)
if p.tok != scanner.EOF {
t.Errorf("expected full parse, stopped at %q", p.lit)
}
// interfaces must be explicitly completed
if ityp, _ := typ.(*types.Interface); ityp != nil {
ityp.Complete()
}
got := typ.String()
if got != test.want {
t.Errorf("got type %q, expected %q", got, test.want)
}
if test.underlying != "" {
underlying := typ.Underlying().String()
if underlying != test.underlying {
t.Errorf("got underlying type %q, expected %q", underlying, test.underlying)
}
}
if test.methods != "" {
nt := typ.(*types.Named)
var buf bytes.Buffer
for i := 0; i != nt.NumMethods(); i++ {
buf.WriteString(nt.Method(i).String())
}
methods := buf.String()
if methods != test.methods {
t.Errorf("got methods %q, expected %q", methods, test.methods)
}
}
}
}
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