Gecko [ 167.86.127.34 ]

Name	Size	Permission
testdata	[ DIR ]	drwxr-xr-x
api.go	13.6 KB	-rw-r--r--
api_test.go	41.52 KB	-rw-r--r--
assignments.go	8.58 KB	-rw-r--r--
builtins.go	17.25 KB	-rw-r--r--
builtins_test.go	7.54 KB	-rw-r--r--
call.go	13.86 KB	-rw-r--r--
check.go	12.43 KB	-rw-r--r--
check_test.go	8.65 KB	-rw-r--r--
conversions.go	4.86 KB	-rw-r--r--
decl.go	22.25 KB	-rw-r--r--
errors.go	3.14 KB	-rw-r--r--
eval.go	2.92 KB	-rw-r--r--
eval_test.go	7.12 KB	-rw-r--r--
example_test.go	8.77 KB	-rw-r--r--
expr.go	44.32 KB	-rw-r--r--
exprstring.go	4.54 KB	-rw-r--r--
exprstring_test.go	1.76 KB	-rw-r--r--
gccgosizes.go	1016 B	-rw-r--r--
gotype.go	8.4 KB	-rw-r--r--
hilbert_test.go	3.63 KB	-rw-r--r--
initorder.go	8.84 KB	-rw-r--r--
issues_test.go	12.86 KB	-rw-r--r--
labels.go	7.01 KB	-rw-r--r--
lookup.go	13.05 KB	-rw-r--r--
methodset.go	8.38 KB	-rw-r--r--
object.go	14.69 KB	-rw-r--r--
object_test.go	2.82 KB	-rw-r--r--
objset.go	927 B	-rw-r--r--
operand.go	7.46 KB	-rw-r--r--
package.go	2.19 KB	-rw-r--r--
predicates.go	9.01 KB	-rw-r--r--
resolver.go	20.76 KB	-rw-r--r--
resolver_test.go	4.58 KB	-rw-r--r--
return.go	4.23 KB	-rw-r--r--
scope.go	5.48 KB	-rw-r--r--
selection.go	3.99 KB	-rw-r--r--
self_test.go	2.2 KB	-rw-r--r--
sizes.go	6.61 KB	-rw-r--r--
sizes_test.go	2.46 KB	-rw-r--r--
stdlib_test.go	8.32 KB	-rw-r--r--
stmt.go	22.8 KB	-rw-r--r--
token_test.go	1.21 KB	-rw-r--r--
type.go	16.81 KB	-rw-r--r--
typestring.go	7.8 KB	-rw-r--r--
typestring_test.go	6.56 KB	-rw-r--r--
typexpr.go	20.6 KB	-rw-r--r--
universe.go	6.47 KB	-rw-r--r--

Code Editor : typestring_test.go

// Copyright 2012 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 types_test

import (
	"go/ast"
	"go/importer"
	"go/parser"
	"go/token"
	"internal/testenv"
	"testing"

. "go/types"
)

const filename = "<src>"

func makePkg(src string) (*Package, error) {
	fset := token.NewFileSet()
	file, err := parser.ParseFile(fset, filename, src, parser.DeclarationErrors)
	if err != nil {
		return nil, err
	}
	// use the package name as package path
	conf := Config{Importer: importer.Default()}
	return conf.Check(file.Name.Name, fset, []*ast.File{file}, nil)
}

type testEntry struct {
	src, str string
}

// dup returns a testEntry where both src and str are the same.
func dup(s string) testEntry {
	return testEntry{s, s}
}

// types that don't depend on any other type declarations
var independentTestTypes = []testEntry{
	// basic types
	dup("int"),
	dup("float32"),
	dup("string"),

// arrays
	dup("[10]int"),

// slices
	dup("[]int"),
	dup("[][]int"),

// structs
	dup("struct{}"),
	dup("struct{x int}"),
	{`struct {
		x, y int
		z float32 "foo"
	}`, `struct{x int; y int; z float32 "foo"}`},
	{`struct {
		string
		elems []complex128
	}`, `struct{string; elems []complex128}`},

// pointers
	dup("*int"),
	dup("***struct{}"),
	dup("*struct{a int; b float32}"),

// functions
	dup("func()"),
	dup("func(x int)"),
	{"func(x, y int)", "func(x int, y int)"},
	{"func(x, y int, z string)", "func(x int, y int, z string)"},
	dup("func(int)"),
	{"func(int, string, byte)", "func(int, string, byte)"},

dup("func() int"),
	{"func() (string)", "func() string"},
	dup("func() (u int)"),
	{"func() (u, v int, w string)", "func() (u int, v int, w string)"},

dup("func(int) string"),
	dup("func(x int) string"),
	dup("func(x int) (u string)"),
	{"func(x, y int) (u string)", "func(x int, y int) (u string)"},

dup("func(...int) string"),
	dup("func(x ...int) string"),
	dup("func(x ...int) (u string)"),
	{"func(x int, y ...int) (u string)", "func(x int, y ...int) (u string)"},

// interfaces
	dup("interface{}"),
	dup("interface{m()}"),
	dup(`interface{String() string; m(int) float32}`),

// maps
	dup("map[string]int"),
	{"map[struct{x, y int}][]byte", "map[struct{x int; y int}][]byte"},

// channels
	dup("chan<- chan int"),
	dup("chan<- <-chan int"),
	dup("<-chan <-chan int"),
	dup("chan (<-chan int)"),
	dup("chan<- func()"),
	dup("<-chan []func() int"),
}

// types that depend on other type declarations (src in TestTypes)
var dependentTestTypes = []testEntry{
	// interfaces
	dup(`interface{io.Reader; io.Writer}`),
	dup(`interface{m() int; io.Writer}`),
	{`interface{m() interface{T}}`, `interface{m() interface{p.T}}`},
}

func TestTypeString(t *testing.T) {
	testenv.MustHaveGoBuild(t)

var tests []testEntry
	tests = append(tests, independentTestTypes...)
	tests = append(tests, dependentTestTypes...)

for _, test := range tests {
		src := `package p; import "io"; type _ io.Writer; type T ` + test.src
		pkg, err := makePkg(src)
		if err != nil {
			t.Errorf("%s: %s", src, err)
			continue
		}
		typ := pkg.Scope().Lookup("T").Type().Underlying()
		if got := typ.String(); got != test.str {
			t.Errorf("%s: got %s, want %s", test.src, got, test.str)
		}
	}
}

func TestIncompleteInterfaces(t *testing.T) {
	sig := NewSignature(nil, nil, nil, false)
	m := NewFunc(token.NoPos, nil, "m", sig)
	for _, test := range []struct {
		typ  *Interface
		want string
	}{
		{new(Interface), "interface{/* incomplete */}"},
		{new(Interface).Complete(), "interface{}"},

{NewInterface(nil, nil), "interface{}"},
		{NewInterface(nil, nil).Complete(), "interface{}"},
		{NewInterface([]*Func{}, nil), "interface{}"},
		{NewInterface([]*Func{}, nil).Complete(), "interface{}"},
		{NewInterface(nil, []*Named{}), "interface{}"},
		{NewInterface(nil, []*Named{}).Complete(), "interface{}"},
		{NewInterface([]*Func{m}, nil), "interface{m() /* incomplete */}"},
		{NewInterface([]*Func{m}, nil).Complete(), "interface{m()}"},
		{NewInterface(nil, []*Named{newDefined(new(Interface).Complete())}), "interface{T /* incomplete */}"},
		{NewInterface(nil, []*Named{newDefined(new(Interface).Complete())}).Complete(), "interface{T}"},
		{NewInterface(nil, []*Named{newDefined(NewInterface([]*Func{m}, nil))}), "interface{T /* incomplete */}"},
		{NewInterface(nil, []*Named{newDefined(NewInterface([]*Func{m}, nil).Complete())}), "interface{T /* incomplete */}"},
		{NewInterface(nil, []*Named{newDefined(NewInterface([]*Func{m}, nil).Complete())}).Complete(), "interface{T}"},

{NewInterfaceType(nil, nil), "interface{}"},
		{NewInterfaceType(nil, nil).Complete(), "interface{}"},
		{NewInterfaceType([]*Func{}, nil), "interface{}"},
		{NewInterfaceType([]*Func{}, nil).Complete(), "interface{}"},
		{NewInterfaceType(nil, []Type{}), "interface{}"},
		{NewInterfaceType(nil, []Type{}).Complete(), "interface{}"},
		{NewInterfaceType([]*Func{m}, nil), "interface{m() /* incomplete */}"},
		{NewInterfaceType([]*Func{m}, nil).Complete(), "interface{m()}"},
		{NewInterfaceType(nil, []Type{new(Interface).Complete()}), "interface{interface{} /* incomplete */}"},
		{NewInterfaceType(nil, []Type{new(Interface).Complete()}).Complete(), "interface{interface{}}"},
		{NewInterfaceType(nil, []Type{NewInterfaceType([]*Func{m}, nil)}), "interface{interface{m() /* incomplete */} /* incomplete */}"},
		{NewInterfaceType(nil, []Type{NewInterfaceType([]*Func{m}, nil).Complete()}), "interface{interface{m()} /* incomplete */}"},
		{NewInterfaceType(nil, []Type{NewInterfaceType([]*Func{m}, nil).Complete()}).Complete(), "interface{interface{m()}}"},
	} {
		got := test.typ.String()
		if got != test.want {
			t.Errorf("got: %s, want: %s", got, test.want)
		}
	}
}

// newDefined creates a new defined type named T with the given underlying type.
// Helper function for use with TestIncompleteInterfaces only.
func newDefined(underlying Type) *Named {
	tname := NewTypeName(token.NoPos, nil, "T", nil)
	return NewNamed(tname, underlying, nil)
}

func TestQualifiedTypeString(t *testing.T) {
	p, _ := pkgFor("p.go", "package p; type T int", nil)
	q, _ := pkgFor("q.go", "package q", nil)

pT := p.Scope().Lookup("T").Type()
	for _, test := range []struct {
		typ  Type
		this *Package
		want string
	}{
		{nil, nil, "<nil>"},
		{pT, nil, "p.T"},
		{pT, p, "T"},
		{pT, q, "p.T"},
		{NewPointer(pT), p, "*T"},
		{NewPointer(pT), q, "*p.T"},
	} {
		qualifier := func(pkg *Package) string {
			if pkg != test.this {
				return pkg.Name()
			}
			return ""
		}
		if got := TypeString(test.typ, qualifier); got != test.want {
			t.Errorf("TypeString(%s, %s) = %s, want %s",
				test.this, test.typ, got, test.want)
		}
	}
}

${this.title}

Code Editor : typestring_test.go