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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package grumpy
import (
"io/ioutil"
"os"
"testing"
)
func TestImportModule(t *testing.T) {
f := NewRootFrame()
invalidModule := newObject(ObjectType)
foo := newTestModule("foo", "foo/__init__.py")
bar := newTestModule("foo.bar", "foo/bar/__init__.py")
baz := newTestModule("foo.bar.baz", "foo/bar/baz/__init__.py")
qux := newTestModule("foo.qux", "foo/qux/__init__.py")
fooCode := NewCode("<module>", "foo/__init__.py", nil, 0, func(*Frame, []*Object) (*Object, *BaseException) { return None, nil })
barCode := NewCode("<module>", "foo/bar/__init__.py", nil, 0, func(*Frame, []*Object) (*Object, *BaseException) { return None, nil })
bazCode := NewCode("<module>", "foo/bar/baz/__init__.py", nil, 0, func(*Frame, []*Object) (*Object, *BaseException) { return None, nil })
quxCode := NewCode("<module>", "foo/qux/__init__.py", nil, 0, func(*Frame, []*Object) (*Object, *BaseException) { return None, nil })
raisesCode := NewCode("<module", "raises.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) {
return nil, f.RaiseType(ValueErrorType, "uh oh")
})
circularImported := false
circularCode := NewCode("<module>", "circular.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) {
if circularImported {
return nil, f.RaiseType(AssertionErrorType, "circular imported recursively")
}
circularImported = true
if _, raised := ImportModule(f, "circular"); raised != nil {
return nil, raised
}
return None, nil
})
circularTestModule := newTestModule("circular", "circular.py").ToObject()
clearCode := NewCode("<module>", "clear.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) {
if _, raised := SysModules.DelItemString(f, "clear"); raised != nil {
return nil, raised
}
return None, nil
})
// NOTE: This test progressively evolves sys.modules, checking after
// each test case that it's populated appropriately.
oldSysModules := SysModules
oldModuleRegistry := moduleRegistry
defer func() {
SysModules = oldSysModules
moduleRegistry = oldModuleRegistry
}()
SysModules = newStringDict(map[string]*Object{"invalid": invalidModule})
moduleRegistry = map[string]*Code{
"foo": fooCode,
"foo.bar": barCode,
"foo.bar.baz": bazCode,
"foo.qux": quxCode,
"raises": raisesCode,
"circular": circularCode,
"clear": clearCode,
}
cases := []struct {
name string
want *Object
wantExc *BaseException
wantSysModules *Dict
}{
{
"noexist",
nil,
mustCreateException(ImportErrorType, "noexist"),
newStringDict(map[string]*Object{"invalid": invalidModule}),
},
{
"invalid",
NewTuple(invalidModule).ToObject(),
nil,
newStringDict(map[string]*Object{"invalid": invalidModule}),
},
{
"raises",
nil,
mustCreateException(ValueErrorType, "uh oh"),
newStringDict(map[string]*Object{"invalid": invalidModule}),
},
{
"foo",
NewTuple(foo.ToObject()).ToObject(),
nil,
newStringDict(map[string]*Object{
"foo": foo.ToObject(),
"invalid": invalidModule,
}),
},
{
"foo",
NewTuple(foo.ToObject()).ToObject(),
nil,
newStringDict(map[string]*Object{
"foo": foo.ToObject(),
"invalid": invalidModule,
}),
},
{
"foo.qux",
NewTuple(foo.ToObject(), qux.ToObject()).ToObject(),
nil,
newStringDict(map[string]*Object{
"foo": foo.ToObject(),
"foo.qux": qux.ToObject(),
"invalid": invalidModule,
}),
},
{
"foo.bar.baz",
NewTuple(foo.ToObject(), bar.ToObject(), baz.ToObject()).ToObject(),
nil,
newStringDict(map[string]*Object{
"foo": foo.ToObject(),
"foo.bar": bar.ToObject(),
"foo.bar.baz": baz.ToObject(),
"foo.qux": qux.ToObject(),
"invalid": invalidModule,
}),
},
{
"circular",
NewTuple(circularTestModule).ToObject(),
nil,
newStringDict(map[string]*Object{
"circular": circularTestModule,
"foo": foo.ToObject(),
"foo.bar": bar.ToObject(),
"foo.bar.baz": baz.ToObject(),
"foo.qux": qux.ToObject(),
"invalid": invalidModule,
}),
},
{
"clear",
nil,
mustCreateException(ImportErrorType, "Loaded module clear not found in sys.modules"),
newStringDict(map[string]*Object{
"circular": circularTestModule,
"foo": foo.ToObject(),
"foo.bar": bar.ToObject(),
"foo.bar.baz": baz.ToObject(),
"foo.qux": qux.ToObject(),
"invalid": invalidModule,
}),
},
}
for _, cas := range cases {
mods, raised := ImportModule(f, cas.name)
var got *Object
if raised == nil {
got = NewTuple(mods...).ToObject()
}
switch checkResult(got, cas.want, raised, cas.wantExc) {
case checkInvokeResultExceptionMismatch:
t.Errorf("ImportModule(%q) raised %v, want %v", cas.name, raised, cas.wantExc)
case checkInvokeResultReturnValueMismatch:
t.Errorf("ImportModule(%q) = %v, want %v", cas.name, got, cas.want)
}
ne := mustNotRaise(NE(f, SysModules.ToObject(), cas.wantSysModules.ToObject()))
b, raised := IsTrue(f, ne)
if raised != nil {
panic(raised)
}
if b {
msg := "ImportModule(%q): sys.modules = %v, want %v"
t.Errorf(msg, cas.name, SysModules, cas.wantSysModules)
}
}
}
func TestModuleGetNameAndFilename(t *testing.T) {
fun := wrapFuncForTest(func(f *Frame, m *Module) (*Tuple, *BaseException) {
name, raised := m.GetName(f)
if raised != nil {
return nil, raised
}
filename, raised := m.GetFilename(f)
if raised != nil {
return nil, raised
}
return newTestTuple(name, filename), nil
})
cases := []invokeTestCase{
{args: wrapArgs(newModule("foo", "foo.py")), want: newTestTuple("foo", "foo.py").ToObject()},
{args: Args{mustNotRaise(ModuleType.Call(NewRootFrame(), wrapArgs("foo"), nil))}, wantExc: mustCreateException(SystemErrorType, "module filename missing")},
{args: wrapArgs(&Module{Object: Object{typ: ModuleType, dict: NewDict()}}), wantExc: mustCreateException(SystemErrorType, "nameless module")},
}
for _, cas := range cases {
if err := runInvokeTestCase(fun, &cas); err != "" {
t.Error(err)
}
}
}
func TestModuleInit(t *testing.T) {
fun := wrapFuncForTest(func(f *Frame, args ...*Object) (*Tuple, *BaseException) {
o, raised := ModuleType.Call(f, args, nil)
if raised != nil {
return nil, raised
}
name, raised := GetAttr(f, o, internedName, None)
if raised != nil {
return nil, raised
}
doc, raised := GetAttr(f, o, NewStr("__doc__"), None)
if raised != nil {
return nil, raised
}
return NewTuple(name, doc), nil
})
cases := []invokeTestCase{
{args: wrapArgs("foo"), want: newTestTuple("foo", None).ToObject()},
{args: wrapArgs("foo", 123), want: newTestTuple("foo", 123).ToObject()},
{args: wrapArgs(newObject(ObjectType)), wantExc: mustCreateException(TypeErrorType, `'__init__' requires a 'str' object but received a "object"`)},
{wantExc: mustCreateException(TypeErrorType, "'__init__' requires 2 arguments")},
}
for _, cas := range cases {
if err := runInvokeTestCase(fun, &cas); err != "" {
t.Error(err)
}
}
}
func TestModuleStrRepr(t *testing.T) {
cases := []invokeTestCase{
{args: wrapArgs(newModule("foo", "<test>")), want: NewStr("<module 'foo' from '<test>'>").ToObject()},
{args: wrapArgs(newModule("foo.bar.baz", "<test>")), want: NewStr("<module 'foo.bar.baz' from '<test>'>").ToObject()},
{args: Args{mustNotRaise(ModuleType.Call(NewRootFrame(), wrapArgs("foo"), nil))}, want: NewStr("<module 'foo' (built-in)>").ToObject()},
{args: wrapArgs(&Module{Object: Object{typ: ModuleType, dict: newTestDict("__file__", "foo.py")}}), want: NewStr("<module '?' from 'foo.py'>").ToObject()},
}
for _, cas := range cases {
if err := runInvokeTestCase(wrapFuncForTest(ToStr), &cas); err != "" {
t.Error(err)
}
if err := runInvokeTestCase(wrapFuncForTest(Repr), &cas); err != "" {
t.Error(err)
}
}
}
func TestRunMain(t *testing.T) {
oldSysModules := SysModules
defer func() {
SysModules = oldSysModules
}()
cases := []struct {
code *Code
wantCode int
wantOutput string
}{
{NewCode("<test>", "test.py", nil, 0, func(*Frame, []*Object) (*Object, *BaseException) { return None, nil }), 0, ""},
{NewCode("<test>", "test.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) {
return nil, f.Raise(SystemExitType.ToObject(), None, nil)
}), 0, ""},
{NewCode("<test>", "test.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) { return nil, f.RaiseType(TypeErrorType, "foo") }), 1, "TypeError: foo\n"},
{NewCode("<test>", "test.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) { return nil, f.RaiseType(SystemExitType, "foo") }), 1, "foo\n"},
{NewCode("<test>", "test.py", nil, 0, func(f *Frame, _ []*Object) (*Object, *BaseException) {
return nil, f.Raise(SystemExitType.ToObject(), NewInt(12).ToObject(), nil)
}), 12, ""},
}
for _, cas := range cases {
SysModules = NewDict()
if gotCode, gotOutput, err := runMainAndCaptureStderr(cas.code); err != nil {
t.Errorf("runMainRedirectStderr() failed: %v", err)
} else if gotCode != cas.wantCode {
t.Errorf("RunMain() = %v, want %v", gotCode, cas.wantCode)
} else if gotOutput != cas.wantOutput {
t.Errorf("RunMain() output %q, want %q", gotOutput, cas.wantOutput)
}
}
}
func runMainAndCaptureStderr(code *Code) (int, string, error) {
oldStderr := Stderr
defer func() {
Stderr = oldStderr
}()
r, w, err := os.Pipe()
if err != nil {
return 0, "", err
}
Stderr = NewFileFromFD(w.Fd(), nil)
c := make(chan int)
go func() {
defer w.Close()
c <- RunMain(code)
}()
result := <-c
data, err := ioutil.ReadAll(r)
if err != nil {
return 0, "", err
}
return result, string(data), nil
}
var testModuleType *Type
func init() {
testModuleType, _ = newClass(NewRootFrame(), TypeType, "testModule", []*Type{ModuleType}, newStringDict(map[string]*Object{
"__eq__": newBuiltinFunction("__eq__", func(f *Frame, args Args, kwargs KWArgs) (*Object, *BaseException) {
if raised := checkMethodArgs(f, "__eq__", args, ModuleType, ObjectType); raised != nil {
return nil, raised
}
if !args[1].isInstance(ModuleType) {
return NotImplemented, nil
}
m1, m2 := toModuleUnsafe(args[0]), toModuleUnsafe(args[1])
name1, raised := m1.GetName(f)
if raised != nil {
return nil, raised
}
name2, raised := m2.GetName(f)
if raised != nil {
return nil, raised
}
if name1.Value() != name2.Value() {
return False.ToObject(), nil
}
file1, raised := m1.GetFilename(f)
if raised != nil {
return nil, raised
}
file2, raised := m2.GetFilename(f)
if raised != nil {
return nil, raised
}
return GetBool(file1.Value() == file2.Value()).ToObject(), nil
}).ToObject(),
"__ne__": newBuiltinFunction("__ne__", func(f *Frame, args Args, kwargs KWArgs) (*Object, *BaseException) {
if raised := checkMethodArgs(f, "__ne__", args, ModuleType, ObjectType); raised != nil {
return nil, raised
}
eq, raised := Eq(f, args[0], args[1])
if raised != nil {
return nil, raised
}
isEq, raised := IsTrue(f, eq)
if raised != nil {
return nil, raised
}
return GetBool(!isEq).ToObject(), nil
}).ToObject(),
}))
}
func newTestModule(name, filename string) *Module {
return &Module{Object: Object{typ: testModuleType, dict: newTestDict("__name__", name, "__file__", filename)}}
}
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