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Source file src/go/internal/gccgoimporter/parser_test.go

Documentation: go/internal/gccgoimporter

  // 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> func (? <type 1>) M (); >", 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)
  		}
  
  		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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