GeezerVison is showing github.com — pythonnet/tests/test_delegate.py at master · pythonnet/pythonnet

Expand file tree

test_delegate.py

Copy path

More file actions

Latest commit

History

453 lines (317 loc) · 11.8 KB

test_delegate.py

Copy path

File metadata and controls

453 lines (317 loc) · 11.8 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

# -*- coding: utf-8 -*-

"""Test CLR delegate support."""

import Python.Test as Test

import System

import pytest

from Python.Test import DelegateTest, StringDelegate

from .utils import HelloClass, hello_func, MultipleHandler, DictProxyType

def test_delegate_standard_attrs():

"""Test standard delegate attributes."""

from Python.Test import PublicDelegate

assert PublicDelegate.__name__ == 'PublicDelegate'

assert PublicDelegate.__module__ == 'Python.Test'

assert isinstance(PublicDelegate.__dict__, DictProxyType)

assert PublicDelegate.__doc__ is None

def test_global_delegate_visibility():

"""Test visibility of module-level delegates."""

from Python.Test import PublicDelegate

assert PublicDelegate.__name__ == 'PublicDelegate'

assert Test.PublicDelegate.__name__ == 'PublicDelegate'

with pytest.raises(ImportError):

from Python.Test import InternalDelegate

_ = InternalDelegate

with pytest.raises(AttributeError):

_ = Test.InternalDelegate

def test_nested_delegate_visibility():

"""Test visibility of nested delegates."""

ob = DelegateTest.PublicDelegate

assert ob.__name__ == 'PublicDelegate'

ob = DelegateTest.ProtectedDelegate

assert ob.__name__ == 'ProtectedDelegate'

with pytest.raises(AttributeError):

_ = DelegateTest.InternalDelegate

with pytest.raises(AttributeError):

_ = DelegateTest.PrivateDelegate

def test_delegate_from_function():

"""Test delegate implemented with a Python function."""

d = StringDelegate(hello_func)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_method():

"""Test delegate implemented with a Python instance method."""

inst = HelloClass()

d = StringDelegate(inst.hello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_unbound_method():

"""Test failure mode for unbound methods."""

with pytest.raises(TypeError):

d = StringDelegate(HelloClass.hello)

d()

def test_delegate_from_static_method():

"""Test delegate implemented with a Python static method."""

d = StringDelegate(HelloClass.s_hello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

inst = HelloClass()

d = StringDelegate(inst.s_hello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_class_method():

"""Test delegate implemented with a Python class method."""

d = StringDelegate(HelloClass.c_hello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

inst = HelloClass()

d = StringDelegate(inst.c_hello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_callable():

"""Test delegate implemented with a Python callable object."""

inst = HelloClass()

d = StringDelegate(inst)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_managed_instance_method():

"""Test delegate implemented with a managed instance method."""

ob = DelegateTest()

d = StringDelegate(ob.SayHello)

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_managed_static_method():

"""Test delegate implemented with a managed static method."""

d = StringDelegate(DelegateTest.StaticSayHello)

ob = DelegateTest()

assert ob.CallStringDelegate(d) == "hello"

assert d() == "hello"

ob.stringDelegate = d

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_from_delegate():

"""Test delegate implemented with another delegate."""

d1 = StringDelegate(hello_func)

d2 = StringDelegate(d1)

ob = DelegateTest()

assert ob.CallStringDelegate(d2) == "hello"

assert d2() == "hello"

ob.stringDelegate = d2

assert ob.CallStringDelegate(ob.stringDelegate) == "hello"

assert ob.stringDelegate() == "hello"

def test_delegate_with_invalid_args():

"""Test delegate instantiation with invalid (non-callable) args."""

with pytest.raises(TypeError):

_ = StringDelegate(None)

with pytest.raises(TypeError):

_ = StringDelegate("spam")

with pytest.raises(TypeError):

_ = StringDelegate(1)

def test_multicast_delegate():

"""Test multicast delegates."""

inst = MultipleHandler()

d1 = StringDelegate(inst.count)

d2 = StringDelegate(inst.count)

md = System.Delegate.Combine(d1, d2)

ob = DelegateTest()

assert ob.CallStringDelegate(md) == "ok"

assert inst.value == 2

assert md() == "ok"

assert inst.value == 4

def test_subclass_delegate_fails():

"""Test that subclassing of a delegate type fails."""

from Python.Test import PublicDelegate

with pytest.raises(TypeError):

class Boom(PublicDelegate):

pass

_ = Boom

def test_delegate_equality():

"""Test delegate equality."""

d = StringDelegate(hello_func)

ob = DelegateTest()

ob.stringDelegate = d

assert ob.stringDelegate == d

def test_bool_delegate():

"""Test boolean delegate."""

from Python.Test import BoolDelegate

def always_so_negative():

return False

d = BoolDelegate(always_so_negative)

ob = DelegateTest()

ob.CallBoolDelegate(d)

assert not d()

assert not ob.CallBoolDelegate(d)

def always_so_positive():

return 1

bad = BoolDelegate(always_so_positive)

with pytest.raises(TypeError):

ob.CallBoolDelegate(bad)

def test_object_delegate():

"""Test object delegate."""

from Python.Test import ObjectDelegate

def create_object():

return DelegateTest()

d = ObjectDelegate(create_object)

ob = DelegateTest()

ob.CallObjectDelegate(d)

def test_invalid_object_delegate():

"""Test invalid object delegate with mismatched return type."""

from Python.Test import ObjectDelegate

d = ObjectDelegate(hello_func)

ob = DelegateTest()

with pytest.raises(TypeError):

ob.CallObjectDelegate(d)

def test_out_int_delegate():

"""Test delegate with an out int parameter."""

from Python.Test import OutIntDelegate

value = 7

def out_hello_func(ignored):

return 5

d = OutIntDelegate(out_hello_func)

result = d(value)

assert result == 5

ob = DelegateTest()

result = ob.CallOutIntDelegate(d, value)

assert result == 5

def invalid_handler(ignored):

return '5'

d = OutIntDelegate(invalid_handler)

with pytest.raises(TypeError):

result = d(value)

def test_out_string_delegate():

"""Test delegate with an out string parameter."""

from Python.Test import OutStringDelegate

value = 'goodbye'

def out_hello_func(ignored):

return 'hello'

d = OutStringDelegate(out_hello_func)

result = d(value)

assert result == 'hello'

ob = DelegateTest()

result = ob.CallOutStringDelegate(d, value)

assert result == 'hello'

def test_ref_int_delegate():

"""Test delegate with a ref string parameter."""

from Python.Test import RefIntDelegate

value = 7

def ref_hello_func(data):

assert data == value

return data + 1

d = RefIntDelegate(ref_hello_func)

result = d(value)

assert result == value + 1

ob = DelegateTest()

result = ob.CallRefIntDelegate(d, value)

assert result == value + 1

def test_ref_string_delegate():

"""Test delegate with a ref string parameter."""

from Python.Test import RefStringDelegate

value = 'goodbye'

def ref_hello_func(data):

assert data == value

return 'hello'

d = RefStringDelegate(ref_hello_func)

result = d(value)

assert result == 'hello'

ob = DelegateTest()

result = ob.CallRefStringDelegate(d, value)

assert result == 'hello'

def test_ref_int_ref_string_delegate():

"""Test delegate with a ref int and ref string parameter."""

from Python.Test import RefIntRefStringDelegate

intData = 7

stringData = 'goodbye'

def ref_hello_func(intValue, stringValue):

assert intData == intValue

assert stringData == stringValue

return (intValue + 1, stringValue + '!')

d = RefIntRefStringDelegate(ref_hello_func)

result = d(intData, stringData)

assert result == (intData + 1, stringData + '!')

ob = DelegateTest()

result = ob.CallRefIntRefStringDelegate(d, intData, stringData)

assert result == (intData + 1, stringData + '!')

def not_a_tuple(intValue, stringValue):

return 'a'

d = RefIntRefStringDelegate(not_a_tuple)

with pytest.raises(TypeError):

result = d(intData, stringData)

def short_tuple(intValue, stringValue):

return (5,)

d = RefIntRefStringDelegate(short_tuple)

with pytest.raises(TypeError):

result = d(intData, stringData)

def long_tuple(intValue, stringValue):

return (5, 'a', 'b')

d = RefIntRefStringDelegate(long_tuple)

with pytest.raises(TypeError):

result = d(intData, stringData)

def wrong_tuple_item(intValue, stringValue):

return ('a', 'b')

d = RefIntRefStringDelegate(wrong_tuple_item)

with pytest.raises(TypeError):

result = d(intData, stringData)

def test_int_ref_int_ref_string_delegate():

"""Test delegate with a ref int and ref string parameter."""

from Python.Test import IntRefIntRefStringDelegate

intData = 7

stringData = 'goodbye'

def ref_hello_func(intValue, stringValue):

assert intData == intValue

assert stringData == stringValue

return (intValue + len(stringValue), intValue + 1, stringValue + '!')

d = IntRefIntRefStringDelegate(ref_hello_func)

result = d(intData, stringData)

assert result == (intData + len(stringData), intData + 1, stringData + '!')

ob = DelegateTest()

result = ob.CallIntRefIntRefStringDelegate(d, intData, stringData)

assert result == (intData + len(stringData), intData + 1, stringData + '!')

def not_a_tuple(intValue, stringValue):

return 'a'

d = IntRefIntRefStringDelegate(not_a_tuple)

with pytest.raises(TypeError):

result = d(intData, stringData)

def short_tuple(intValue, stringValue):

return (5,)

d = IntRefIntRefStringDelegate(short_tuple)

with pytest.raises(TypeError):

result = d(intData, stringData)

def wrong_return_type(intValue, stringValue):

return ('a', 7, 'b')

d = IntRefIntRefStringDelegate(wrong_return_type)

with pytest.raises(TypeError):

result = d(intData, stringData)

# test async delegates

# test multicast delegates

# test explicit op_

# test sig mismatch, both on managed and Python side

# test return wrong type