tests/libqtest.h

   1 /*
   2  * QTest
   3  *
   4  * Copyright IBM, Corp. 2012
   5  * Copyright Red Hat, Inc. 2012
   6  * Copyright SUSE LINUX Products GmbH 2013
   7  *
   8  * Authors:
   9  *  Anthony Liguori   <aliguori@us.ibm.com>
  10  *  Paolo Bonzini     <pbonzini@redhat.com>
  11  *  Andreas Färber    <afaerber@suse.de>
  12  *
  13  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  14  * See the COPYING file in the top-level directory.
  15  *
  16  */
  17 #ifndef LIBQTEST_H
  18 #define LIBQTEST_H
  19
  20 #include "qapi/qmp/qobject.h"
  21 #include "qapi/qmp/qdict.h"
  22
  23 typedef struct QTestState QTestState;
  24
  25 /**
  26  * qtest_initf:
  27  * @fmt...: Format for creating other arguments to pass to QEMU, formatted
  28  * like sprintf().
  29  *
  30  * Convenience wrapper around qtest_init().
  31  *
  32  * Returns: #QTestState instance.
  33  */
  34 QTestState *qtest_initf(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
  35
  36 /**
  37  * qtest_vinitf:
  38  * @fmt: Format for creating other arguments to pass to QEMU, formatted
  39  * like vsprintf().
  40  * @ap: Format arguments.
  41  *
  42  * Convenience wrapper around qtest_init().
  43  *
  44  * Returns: #QTestState instance.
  45  */
  46 QTestState *qtest_vinitf(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
  47
  48 /**
  49  * qtest_init:
  50  * @extra_args: other arguments to pass to QEMU.  CAUTION: these
  51  * arguments are subject to word splitting and shell evaluation.
  52  *
  53  * Returns: #QTestState instance.
  54  */
  55 QTestState *qtest_init(const char *extra_args);
  56
  57 /**
  58  * qtest_init_without_qmp_handshake:
  59  * @extra_args: other arguments to pass to QEMU.  CAUTION: these
  60  * arguments are subject to word splitting and shell evaluation.
  61  *
  62  * Returns: #QTestState instance.
  63  */
  64 QTestState *qtest_init_without_qmp_handshake(const char *extra_args);
  65
  66 /**
  67  * qtest_init_with_serial:
  68  * @extra_args: other arguments to pass to QEMU.  CAUTION: these
  69  * arguments are subject to word splitting and shell evaluation.
  70  * @sock_fd: pointer to store the socket file descriptor for
  71  * connection with serial.
  72  *
  73  * Returns: #QTestState instance.
  74  */
  75 QTestState *qtest_init_with_serial(const char *extra_args, int *sock_fd);
  76
  77 /**
  78  * qtest_quit:
  79  * @s: #QTestState instance to operate on.
  80  *
  81  * Shut down the QEMU process associated to @s.
  82  */
  83 void qtest_quit(QTestState *s);
  84
  85 /**
  86  * qtest_qmp_fds:
  87  * @s: #QTestState instance to operate on.
  88  * @fds: array of file descriptors
  89  * @fds_num: number of elements in @fds
  90  * @fmt...: QMP message to send to qemu, formatted like
  91  * qobject_from_jsonf_nofail().  See parse_escape() for what's
  92  * supported after '%'.
  93  *
  94  * Sends a QMP message to QEMU with fds and returns the response.
  95  */
  96 QDict *qtest_qmp_fds(QTestState *s, int *fds, size_t fds_num,
  97                      const char *fmt, ...)
  98     GCC_FMT_ATTR(4, 5);
  99
 100 /**
 101  * qtest_qmp:
 102  * @s: #QTestState instance to operate on.
 103  * @fmt...: QMP message to send to qemu, formatted like
 104  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 105  * supported after '%'.
 106  *
 107  * Sends a QMP message to QEMU and returns the response.
 108  */
 109 QDict *qtest_qmp(QTestState *s, const char *fmt, ...)
 110     GCC_FMT_ATTR(2, 3);
 111
 112 /**
 113  * qtest_qmp_send:
 114  * @s: #QTestState instance to operate on.
 115  * @fmt...: QMP message to send to qemu, formatted like
 116  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 117  * supported after '%'.
 118  *
 119  * Sends a QMP message to QEMU and leaves the response in the stream.
 120  */
 121 void qtest_qmp_send(QTestState *s, const char *fmt, ...)
 122     GCC_FMT_ATTR(2, 3);
 123
 124 /**
 125  * qtest_qmp_send_raw:
 126  * @s: #QTestState instance to operate on.
 127  * @fmt...: text to send, formatted like sprintf()
 128  *
 129  * Sends text to the QMP monitor verbatim.  Need not be valid JSON;
 130  * this is useful for negative tests.
 131  */
 132 void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...)
 133     GCC_FMT_ATTR(2, 3);
 134
 135 /**
 136  * qtest_vqmp_fds:
 137  * @s: #QTestState instance to operate on.
 138  * @fds: array of file descriptors
 139  * @fds_num: number of elements in @fds
 140  * @fmt: QMP message to send to QEMU, formatted like
 141  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 142  * supported after '%'.
 143  * @ap: QMP message arguments
 144  *
 145  * Sends a QMP message to QEMU with fds and returns the response.
 146  */
 147 QDict *qtest_vqmp_fds(QTestState *s, int *fds, size_t fds_num,
 148                       const char *fmt, va_list ap)
 149     GCC_FMT_ATTR(4, 0);
 150
 151 /**
 152  * qtest_vqmp:
 153  * @s: #QTestState instance to operate on.
 154  * @fmt: QMP message to send to QEMU, formatted like
 155  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 156  * supported after '%'.
 157  * @ap: QMP message arguments
 158  *
 159  * Sends a QMP message to QEMU and returns the response.
 160  */
 161 QDict *qtest_vqmp(QTestState *s, const char *fmt, va_list ap)
 162     GCC_FMT_ATTR(2, 0);
 163
 164 /**
 165  * qtest_qmp_vsend_fds:
 166  * @s: #QTestState instance to operate on.
 167  * @fds: array of file descriptors
 168  * @fds_num: number of elements in @fds
 169  * @fmt: QMP message to send to QEMU, formatted like
 170  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 171  * supported after '%'.
 172  * @ap: QMP message arguments
 173  *
 174  * Sends a QMP message to QEMU and leaves the response in the stream.
 175  */
 176 void qtest_qmp_vsend_fds(QTestState *s, int *fds, size_t fds_num,
 177                          const char *fmt, va_list ap)
 178     GCC_FMT_ATTR(4, 0);
 179
 180 /**
 181  * qtest_qmp_vsend:
 182  * @s: #QTestState instance to operate on.
 183  * @fmt: QMP message to send to QEMU, formatted like
 184  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 185  * supported after '%'.
 186  * @ap: QMP message arguments
 187  *
 188  * Sends a QMP message to QEMU and leaves the response in the stream.
 189  */
 190 void qtest_qmp_vsend(QTestState *s, const char *fmt, va_list ap)
 191     GCC_FMT_ATTR(2, 0);
 192
 193 /**
 194  * qtest_receive:
 195  * @s: #QTestState instance to operate on.
 196  *
 197  * Reads a QMP message from QEMU and returns the response.
 198  */
 199 QDict *qtest_qmp_receive(QTestState *s);
 200
 201 /**
 202  * qtest_qmp_eventwait:
 203  * @s: #QTestState instance to operate on.
 204  * @s: #event event to wait for.
 205  *
 206  * Continuously polls for QMP responses until it receives the desired event.
 207  */
 208 void qtest_qmp_eventwait(QTestState *s, const char *event);
 209
 210 /**
 211  * qtest_qmp_eventwait_ref:
 212  * @s: #QTestState instance to operate on.
 213  * @s: #event event to wait for.
 214  *
 215  * Continuously polls for QMP responses until it receives the desired event.
 216  * Returns a copy of the event for further investigation.
 217  */
 218 QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event);
 219
 220 /**
 221  * qtest_qmp_receive_success:
 222  * @s: #QTestState instance to operate on
 223  * @event_cb: Event callback
 224  * @opaque: Argument for @event_cb
 225  *
 226  * Poll QMP messages until a command success response is received.
 227  * If @event_cb, call it for each event received, passing @opaque,
 228  * the event's name and data.
 229  * Return the success response's "return" member.
 230  */
 231 QDict *qtest_qmp_receive_success(QTestState *s,
 232                                  void (*event_cb)(void *opaque,
 233                                                   const char *name,
 234                                                   QDict *data),
 235                                  void *opaque);
 236
 237 /**
 238  * qtest_hmp:
 239  * @s: #QTestState instance to operate on.
 240  * @fmt...: HMP command to send to QEMU, formats arguments like sprintf().
 241  *
 242  * Send HMP command to QEMU via QMP's human-monitor-command.
 243  * QMP events are discarded.
 244  *
 245  * Returns: the command's output.  The caller should g_free() it.
 246  */
 247 char *qtest_hmp(QTestState *s, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
 248
 249 /**
 250  * qtest_hmpv:
 251  * @s: #QTestState instance to operate on.
 252  * @fmt: HMP command to send to QEMU, formats arguments like vsprintf().
 253  * @ap: HMP command arguments
 254  *
 255  * Send HMP command to QEMU via QMP's human-monitor-command.
 256  * QMP events are discarded.
 257  *
 258  * Returns: the command's output.  The caller should g_free() it.
 259  */
 260 char *qtest_vhmp(QTestState *s, const char *fmt, va_list ap)
 261     GCC_FMT_ATTR(2, 0);
 262
 263 void qtest_module_load(QTestState *s, const char *prefix, const char *libname);
 264
 265 /**
 266  * qtest_get_irq:
 267  * @s: #QTestState instance to operate on.
 268  * @num: Interrupt to observe.
 269  *
 270  * Returns: The level of the @num interrupt.
 271  */
 272 bool qtest_get_irq(QTestState *s, int num);
 273
 274 /**
 275  * qtest_irq_intercept_in:
 276  * @s: #QTestState instance to operate on.
 277  * @string: QOM path of a device.
 278  *
 279  * Associate qtest irqs with the GPIO-in pins of the device
 280  * whose path is specified by @string.
 281  */
 282 void qtest_irq_intercept_in(QTestState *s, const char *string);
 283
 284 /**
 285  * qtest_irq_intercept_out:
 286  * @s: #QTestState instance to operate on.
 287  * @string: QOM path of a device.
 288  *
 289  * Associate qtest irqs with the GPIO-out pins of the device
 290  * whose path is specified by @string.
 291  */
 292 void qtest_irq_intercept_out(QTestState *s, const char *string);
 293
 294 /**
 295  * qtest_set_irq_in:
 296  * @s: QTestState instance to operate on.
 297  * @string: QOM path of a device
 298  * @name: IRQ name
 299  * @irq: IRQ number
 300  * @level: IRQ level
 301  *
 302  * Force given device/irq GPIO-in pin to the given level.
 303  */
 304 void qtest_set_irq_in(QTestState *s, const char *string, const char *name,
 305                       int irq, int level);
 306
 307 /**
 308  * qtest_outb:
 309  * @s: #QTestState instance to operate on.
 310  * @addr: I/O port to write to.
 311  * @value: Value being written.
 312  *
 313  * Write an 8-bit value to an I/O port.
 314  */
 315 void qtest_outb(QTestState *s, uint16_t addr, uint8_t value);
 316
 317 /**
 318  * qtest_outw:
 319  * @s: #QTestState instance to operate on.
 320  * @addr: I/O port to write to.
 321  * @value: Value being written.
 322  *
 323  * Write a 16-bit value to an I/O port.
 324  */
 325 void qtest_outw(QTestState *s, uint16_t addr, uint16_t value);
 326
 327 /**
 328  * qtest_outl:
 329  * @s: #QTestState instance to operate on.
 330  * @addr: I/O port to write to.
 331  * @value: Value being written.
 332  *
 333  * Write a 32-bit value to an I/O port.
 334  */
 335 void qtest_outl(QTestState *s, uint16_t addr, uint32_t value);
 336
 337 /**
 338  * qtest_inb:
 339  * @s: #QTestState instance to operate on.
 340  * @addr: I/O port to read from.
 341  *
 342  * Returns an 8-bit value from an I/O port.
 343  */
 344 uint8_t qtest_inb(QTestState *s, uint16_t addr);
 345
 346 /**
 347  * qtest_inw:
 348  * @s: #QTestState instance to operate on.
 349  * @addr: I/O port to read from.
 350  *
 351  * Returns a 16-bit value from an I/O port.
 352  */
 353 uint16_t qtest_inw(QTestState *s, uint16_t addr);
 354
 355 /**
 356  * qtest_inl:
 357  * @s: #QTestState instance to operate on.
 358  * @addr: I/O port to read from.
 359  *
 360  * Returns a 32-bit value from an I/O port.
 361  */
 362 uint32_t qtest_inl(QTestState *s, uint16_t addr);
 363
 364 /**
 365  * qtest_writeb:
 366  * @s: #QTestState instance to operate on.
 367  * @addr: Guest address to write to.
 368  * @value: Value being written.
 369  *
 370  * Writes an 8-bit value to memory.
 371  */
 372 void qtest_writeb(QTestState *s, uint64_t addr, uint8_t value);
 373
 374 /**
 375  * qtest_writew:
 376  * @s: #QTestState instance to operate on.
 377  * @addr: Guest address to write to.
 378  * @value: Value being written.
 379  *
 380  * Writes a 16-bit value to memory.
 381  */
 382 void qtest_writew(QTestState *s, uint64_t addr, uint16_t value);
 383
 384 /**
 385  * qtest_writel:
 386  * @s: #QTestState instance to operate on.
 387  * @addr: Guest address to write to.
 388  * @value: Value being written.
 389  *
 390  * Writes a 32-bit value to memory.
 391  */
 392 void qtest_writel(QTestState *s, uint64_t addr, uint32_t value);
 393
 394 /**
 395  * qtest_writeq:
 396  * @s: #QTestState instance to operate on.
 397  * @addr: Guest address to write to.
 398  * @value: Value being written.
 399  *
 400  * Writes a 64-bit value to memory.
 401  */
 402 void qtest_writeq(QTestState *s, uint64_t addr, uint64_t value);
 403
 404 /**
 405  * qtest_readb:
 406  * @s: #QTestState instance to operate on.
 407  * @addr: Guest address to read from.
 408  *
 409  * Reads an 8-bit value from memory.
 410  *
 411  * Returns: Value read.
 412  */
 413 uint8_t qtest_readb(QTestState *s, uint64_t addr);
 414
 415 /**
 416  * qtest_readw:
 417  * @s: #QTestState instance to operate on.
 418  * @addr: Guest address to read from.
 419  *
 420  * Reads a 16-bit value from memory.
 421  *
 422  * Returns: Value read.
 423  */
 424 uint16_t qtest_readw(QTestState *s, uint64_t addr);
 425
 426 /**
 427  * qtest_readl:
 428  * @s: #QTestState instance to operate on.
 429  * @addr: Guest address to read from.
 430  *
 431  * Reads a 32-bit value from memory.
 432  *
 433  * Returns: Value read.
 434  */
 435 uint32_t qtest_readl(QTestState *s, uint64_t addr);
 436
 437 /**
 438  * qtest_readq:
 439  * @s: #QTestState instance to operate on.
 440  * @addr: Guest address to read from.
 441  *
 442  * Reads a 64-bit value from memory.
 443  *
 444  * Returns: Value read.
 445  */
 446 uint64_t qtest_readq(QTestState *s, uint64_t addr);
 447
 448 /**
 449  * qtest_memread:
 450  * @s: #QTestState instance to operate on.
 451  * @addr: Guest address to read from.
 452  * @data: Pointer to where memory contents will be stored.
 453  * @size: Number of bytes to read.
 454  *
 455  * Read guest memory into a buffer.
 456  */
 457 void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size);
 458
 459 /**
 460  * qtest_rtas_call:
 461  * @s: #QTestState instance to operate on.
 462  * @name: name of the command to call.
 463  * @nargs: Number of args.
 464  * @args: Guest address to read args from.
 465  * @nret: Number of return value.
 466  * @ret: Guest address to write return values to.
 467  *
 468  * Call an RTAS function
 469  */
 470 uint64_t qtest_rtas_call(QTestState *s, const char *name,
 471                          uint32_t nargs, uint64_t args,
 472                          uint32_t nret, uint64_t ret);
 473
 474 /**
 475  * qtest_bufread:
 476  * @s: #QTestState instance to operate on.
 477  * @addr: Guest address to read from.
 478  * @data: Pointer to where memory contents will be stored.
 479  * @size: Number of bytes to read.
 480  *
 481  * Read guest memory into a buffer and receive using a base64 encoding.
 482  */
 483 void qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size);
 484
 485 /**
 486  * qtest_memwrite:
 487  * @s: #QTestState instance to operate on.
 488  * @addr: Guest address to write to.
 489  * @data: Pointer to the bytes that will be written to guest memory.
 490  * @size: Number of bytes to write.
 491  *
 492  * Write a buffer to guest memory.
 493  */
 494 void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size);
 495
 496 /**
 497  * qtest_bufwrite:
 498  * @s: #QTestState instance to operate on.
 499  * @addr: Guest address to write to.
 500  * @data: Pointer to the bytes that will be written to guest memory.
 501  * @size: Number of bytes to write.
 502  *
 503  * Write a buffer to guest memory and transmit using a base64 encoding.
 504  */
 505 void qtest_bufwrite(QTestState *s, uint64_t addr,
 506                     const void *data, size_t size);
 507
 508 /**
 509  * qtest_memset:
 510  * @s: #QTestState instance to operate on.
 511  * @addr: Guest address to write to.
 512  * @patt: Byte pattern to fill the guest memory region with.
 513  * @size: Number of bytes to write.
 514  *
 515  * Write a pattern to guest memory.
 516  */
 517 void qtest_memset(QTestState *s, uint64_t addr, uint8_t patt, size_t size);
 518
 519 /**
 520  * qtest_clock_step_next:
 521  * @s: #QTestState instance to operate on.
 522  *
 523  * Advance the QEMU_CLOCK_VIRTUAL to the next deadline.
 524  *
 525  * Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
 526  */
 527 int64_t qtest_clock_step_next(QTestState *s);
 528
 529 /**
 530  * qtest_clock_step:
 531  * @s: QTestState instance to operate on.
 532  * @step: Number of nanoseconds to advance the clock by.
 533  *
 534  * Advance the QEMU_CLOCK_VIRTUAL by @step nanoseconds.
 535  *
 536  * Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
 537  */
 538 int64_t qtest_clock_step(QTestState *s, int64_t step);
 539
 540 /**
 541  * qtest_clock_set:
 542  * @s: QTestState instance to operate on.
 543  * @val: Nanoseconds value to advance the clock to.
 544  *
 545  * Advance the QEMU_CLOCK_VIRTUAL to @val nanoseconds since the VM was launched.
 546  *
 547  * Returns: The current value of the QEMU_CLOCK_VIRTUAL in nanoseconds.
 548  */
 549 int64_t qtest_clock_set(QTestState *s, int64_t val);
 550
 551 /**
 552  * qtest_big_endian:
 553  * @s: QTestState instance to operate on.
 554  *
 555  * Returns: True if the architecture under test has a big endian configuration.
 556  */
 557 bool qtest_big_endian(QTestState *s);
 558
 559 /**
 560  * qtest_get_arch:
 561  *
 562  * Returns: The architecture for the QEMU executable under test.
 563  */
 564 const char *qtest_get_arch(void);
 565
 566 /**
 567  * qtest_add_func:
 568  * @str: Test case path.
 569  * @fn: Test case function
 570  *
 571  * Add a GTester testcase with the given name and function.
 572  * The path is prefixed with the architecture under test, as
 573  * returned by qtest_get_arch().
 574  */
 575 void qtest_add_func(const char *str, void (*fn)(void));
 576
 577 /**
 578  * qtest_add_data_func:
 579  * @str: Test case path.
 580  * @data: Test case data
 581  * @fn: Test case function
 582  *
 583  * Add a GTester testcase with the given name, data and function.
 584  * The path is prefixed with the architecture under test, as
 585  * returned by qtest_get_arch().
 586  */
 587 void qtest_add_data_func(const char *str, const void *data,
 588                          void (*fn)(const void *));
 589
 590 /**
 591  * qtest_add_data_func_full:
 592  * @str: Test case path.
 593  * @data: Test case data
 594  * @fn: Test case function
 595  * @data_free_func: GDestroyNotify for data
 596  *
 597  * Add a GTester testcase with the given name, data and function.
 598  * The path is prefixed with the architecture under test, as
 599  * returned by qtest_get_arch().
 600  *
 601  * @data is passed to @data_free_func() on test completion.
 602  */
 603 void qtest_add_data_func_full(const char *str, void *data,
 604                               void (*fn)(const void *),
 605                               GDestroyNotify data_free_func);
 606
 607 /**
 608  * qtest_add:
 609  * @testpath: Test case path
 610  * @Fixture: Fixture type
 611  * @tdata: Test case data
 612  * @fsetup: Test case setup function
 613  * @ftest: Test case function
 614  * @fteardown: Test case teardown function
 615  *
 616  * Add a GTester testcase with the given name, data and functions.
 617  * The path is prefixed with the architecture under test, as
 618  * returned by qtest_get_arch().
 619  */
 620 #define qtest_add(testpath, Fixture, tdata, fsetup, ftest, fteardown) \
 621     do { \
 622         char *path = g_strdup_printf("/%s/%s", qtest_get_arch(), testpath); \
 623         g_test_add(path, Fixture, tdata, fsetup, ftest, fteardown); \
 624         g_free(path); \
 625     } while (0)
 626
 627 void qtest_add_abrt_handler(GHookFunc fn, const void *data);
 628
 629 /**
 630  * qtest_qmp_assert_success:
 631  * @qts: QTestState instance to operate on
 632  * @fmt...: QMP message to send to qemu, formatted like
 633  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 634  * supported after '%'.
 635  *
 636  * Sends a QMP message to QEMU and asserts that a 'return' key is present in
 637  * the response.
 638  */
 639 void qtest_qmp_assert_success(QTestState *qts, const char *fmt, ...)
 640     GCC_FMT_ATTR(2, 3);
 641
 642 QDict *qmp_fd_receive(int fd);
 643 void qmp_fd_vsend_fds(int fd, int *fds, size_t fds_num,
 644                       const char *fmt, va_list ap) GCC_FMT_ATTR(4, 0);
 645 void qmp_fd_vsend(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0);
 646 void qmp_fd_send(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
 647 void qmp_fd_send_raw(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
 648 void qmp_fd_vsend_raw(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0);
 649 QDict *qmp_fdv(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0);
 650 QDict *qmp_fd(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
 651
 652 /**
 653  * qtest_cb_for_every_machine:
 654  * @cb: Pointer to the callback function
 655  * @skip_old_versioned: true if versioned old machine types should be skipped
 656  *
 657  *  Call a callback function for every name of all available machines.
 658  */
 659 void qtest_cb_for_every_machine(void (*cb)(const char *machine),
 660                                 bool skip_old_versioned);
 661
 662 /**
 663  * qtest_qmp_device_add:
 664  * @qts: QTestState instance to operate on
 665  * @driver: Name of the device that should be added
 666  * @id: Identification string
 667  * @fmt...: QMP message to send to qemu, formatted like
 668  * qobject_from_jsonf_nofail().  See parse_escape() for what's
 669  * supported after '%'.
 670  *
 671  * Generic hot-plugging test via the device_add QMP command.
 672  */
 673 void qtest_qmp_device_add(QTestState *qts, const char *driver, const char *id,
 674                           const char *fmt, ...) GCC_FMT_ATTR(4, 5);
 675
 676 /**
 677  * qtest_qmp_device_del:
 678  * @qts: QTestState instance to operate on
 679  * @id: Identification string
 680  *
 681  * Generic hot-unplugging test via the device_del QMP command.
 682  */
 683 void qtest_qmp_device_del(QTestState *qts, const char *id);
 684
 685 /**
 686  * qmp_rsp_is_err:
 687  * @rsp: QMP response to check for error
 688  *
 689  * Test @rsp for error and discard @rsp.
 690  * Returns 'true' if there is error in @rsp and 'false' otherwise.
 691  */
 692 bool qmp_rsp_is_err(QDict *rsp);
 693
 694 /**
 695  * qmp_assert_error_class:
 696  * @rsp: QMP response to check for error
 697  * @class: an error class
 698  *
 699  * Assert the response has the given error class and discard @rsp.
 700  */
 701 void qmp_assert_error_class(QDict *rsp, const char *class);
 702
 703 /**
 704  * qtest_probe_child:
 705  * @s: QTestState instance to operate on.
 706  *
 707  * Returns: true if the child is still alive.
 708  */
 709 bool qtest_probe_child(QTestState *s);
 710
 711 /**
 712  * qtest_set_expected_status:
 713  * @s: QTestState instance to operate on.
 714  * @status: an expected exit status.
 715  *
 716  * Set expected exit status of the child.
 717  */
 718 void qtest_set_expected_status(QTestState *s, int status);
 719
 720 #endif