#include <stdio.h>
#include <string.h>

#include "py/obj.h"
#include "py/objstr.h"
#include "py/runtime.h"
#include "py/gc.h"
#include "py/repl.h"
#include "py/mpz.h"
#include "py/builtin.h"
#include "py/emit.h"
#include "py/formatfloat.h"
#include "py/ringbuf.h"
#include "py/pairheap.h"
#include "py/stream.h"
#include "py/binary.h"
#include "py/bc.h"

// expected output of this file is found in extra_coverage.py.exp

#if defined(MICROPY_UNIX_COVERAGE)

// stream testing object
typedef struct _mp_obj_streamtest_t {
 mp_obj_base_t base;
 uint8_t *buf;
 size_t len;
 size_t pos;
 int error_code;
} mp_obj_streamtest_t;

STATIC mp_obj_t stest_set_buf(mp_obj_t o_in, mp_obj_t buf_in) {
 mp_obj_streamtest_t *o = MP_OBJ_TO_PTR(o_in);
 mp_buffer_info_t bufinfo;
 mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
 o->buf = m_new(uint8_t, bufinfo.len);
 memcpy(o->buf, bufinfo.buf, bufinfo.len);
 o->len = bufinfo.len;
 o->pos = 0;
 return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(stest_set_buf_obj, stest_set_buf);

STATIC mp_obj_t stest_set_error(mp_obj_t o_in, mp_obj_t err_in) {
 mp_obj_streamtest_t *o = MP_OBJ_TO_PTR(o_in);
 o->error_code = mp_obj_get_int(err_in);
 return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(stest_set_error_obj, stest_set_error);

STATIC mp_uint_t stest_read(mp_obj_t o_in, void *buf, mp_uint_t size, int *errcode) {
 mp_obj_streamtest_t *o = MP_OBJ_TO_PTR(o_in);
 if (o->pos < o->len) {
 if (size > o->len - o->pos) {
 size = o->len - o->pos;
 }
 memcpy(buf, o->buf + o->pos, size);
 o->pos += size;
 return size;
 } else if (o->error_code == 0) {
 return 0;
 } else {
 *errcode = o->error_code;
 return MP_STREAM_ERROR;
 }
}

STATIC mp_uint_t stest_write(mp_obj_t o_in, const void *buf, mp_uint_t size, int *errcode) {
 mp_obj_streamtest_t *o = MP_OBJ_TO_PTR(o_in);
 (void)buf;
 (void)size;
 *errcode = o->error_code;
 return MP_STREAM_ERROR;
}

STATIC mp_uint_t stest_ioctl(mp_obj_t o_in, mp_uint_t request, uintptr_t arg, int *errcode) {
 mp_obj_streamtest_t *o = MP_OBJ_TO_PTR(o_in);
 (void)arg;
 (void)request;
 (void)errcode;
 if (o->error_code != 0) {
 *errcode = o->error_code;
 return MP_STREAM_ERROR;
 }
 return 0;
}

STATIC const mp_rom_map_elem_t rawfile_locals_dict_table[] = {
 { MP_ROM_QSTR(MP_QSTR_set_buf), MP_ROM_PTR(&stest_set_buf_obj) },
 { MP_ROM_QSTR(MP_QSTR_set_error), MP_ROM_PTR(&stest_set_error_obj) },
 { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
 { MP_ROM_QSTR(MP_QSTR_read1), MP_ROM_PTR(&mp_stream_read1_obj) },
 { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
 { MP_ROM_QSTR(MP_QSTR_write1), MP_ROM_PTR(&mp_stream_write1_obj) },
 { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
 { MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj) },
 { MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&mp_stream_ioctl_obj) },
};

STATIC MP_DEFINE_CONST_DICT(rawfile_locals_dict, rawfile_locals_dict_table);

STATIC const mp_stream_p_t fileio_stream_p = {
 .read = stest_read,
 .write = stest_write,
 .ioctl = stest_ioctl,
};

STATIC const mp_obj_type_t mp_type_stest_fileio = {
 { &mp_type_type },
 .protocol = &fileio_stream_p,
 .locals_dict = (mp_obj_dict_t *)&rawfile_locals_dict,
};

// stream read returns non-blocking error
STATIC mp_uint_t stest_read2(mp_obj_t o_in, void *buf, mp_uint_t size, int *errcode) {
 (void)o_in;
 (void)buf;
 (void)size;
 *errcode = MP_EAGAIN;
 return MP_STREAM_ERROR;
}

STATIC const mp_rom_map_elem_t rawfile_locals_dict_table2[] = {
 { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
};

STATIC MP_DEFINE_CONST_DICT(rawfile_locals_dict2, rawfile_locals_dict_table2);

STATIC const mp_stream_p_t textio_stream_p2 = {
 .read = stest_read2,
 .write = NULL,
 .is_text = true,
};

STATIC const mp_obj_type_t mp_type_stest_textio2 = {
 { &mp_type_type },
 .protocol = &textio_stream_p2,
 .locals_dict = (mp_obj_dict_t *)&rawfile_locals_dict2,
};

// str/bytes objects without a valid hash
STATIC const mp_obj_str_t str_no_hash_obj = {{&mp_type_str}, 0, 10, (const byte *)"0123456789"};
STATIC const mp_obj_str_t bytes_no_hash_obj = {{&mp_type_bytes}, 0, 10, (const byte *)"0123456789"};

STATIC int pairheap_lt(mp_pairheap_t *a, mp_pairheap_t *b) {
 return (uintptr_t)a < (uintptr_t)b;
}

// ops array contain operations: x>=0 means push(x), x<0 means delete(-x)
STATIC void pairheap_test(size_t nops, int *ops) {
 mp_pairheap_t node[8];
 for (size_t i = 0; i < MP_ARRAY_SIZE(node); ++i) {
 mp_pairheap_init_node(pairheap_lt, &node[i]);
 }
 mp_pairheap_t *heap = mp_pairheap_new(pairheap_lt);
 printf("create:");
 for (size_t i = 0; i < nops; ++i) {
 if (ops[i] >= 0) {
 heap = mp_pairheap_push(pairheap_lt, heap, &node[ops[i]]);
 } else {
 heap = mp_pairheap_delete(pairheap_lt, heap, &node[-ops[i]]);
 }
 if (mp_pairheap_is_empty(pairheap_lt, heap)) {
 mp_printf(&mp_plat_print, " -");
 } else {
 mp_printf(&mp_plat_print, " %d", mp_pairheap_peek(pairheap_lt, heap) - &node[0]);
 ;
 }
 }
 printf("\npop all:");
 while (!mp_pairheap_is_empty(pairheap_lt, heap)) {
 mp_printf(&mp_plat_print, " %d", mp_pairheap_peek(pairheap_lt, heap) - &node[0]);
 ;
 heap = mp_pairheap_pop(pairheap_lt, heap);
 }
 printf("\n");
}

// function to run extra tests for things that can't be checked by scripts
STATIC mp_obj_t extra_coverage(void) {
 // mp_printf (used by ports that don't have a native printf)
 {
 mp_printf(&mp_plat_print, "# mp_printf\n");
 mp_printf(&mp_plat_print, "%d %+d % d\n", -123, 123, 123); // sign
 mp_printf(&mp_plat_print, "%05d\n", -123); // negative number with zero padding
 mp_printf(&mp_plat_print, "%ld\n", 123); // long
 mp_printf(&mp_plat_print, "%lx\n", 0x123); // long hex
 mp_printf(&mp_plat_print, "%X\n", 0x1abcdef); // capital hex
 mp_printf(&mp_plat_print, "%.2s %.3s '%4.4s' '%5.5q' '%.3q'\n", "abc", "abc", "abc", MP_QSTR_True, MP_QSTR_True); // fixed string precision
 mp_printf(&mp_plat_print, "%.*s\n", -1, "abc"); // negative string precision
 mp_printf(&mp_plat_print, "%b %b\n", 0, 1); // bools
 #ifndef NDEBUG
 mp_printf(&mp_plat_print, "%s\n", NULL); // null string
 #else
 mp_printf(&mp_plat_print, "(null)\n"); // without debugging mp_printf won't check for null
 #endif
 mp_printf(&mp_plat_print, "%d\n", 0x80000000); // should print signed
 mp_printf(&mp_plat_print, "%u\n", 0x80000000); // should print unsigned
 mp_printf(&mp_plat_print, "%x\n", 0x80000000); // should print unsigned
 mp_printf(&mp_plat_print, "%X\n", 0x80000000); // should print unsigned
 mp_printf(&mp_plat_print, "abc\n%"); // string ends in middle of format specifier
 mp_printf(&mp_plat_print, "%%\n"); // literal % character
 }

 // GC
 {
 mp_printf(&mp_plat_print, "# GC\n");

 // calling gc_free while GC is locked
 gc_lock();
 gc_free(NULL);
 gc_unlock();

 // using gc_realloc to resize to 0, which means free the memory
 void *p = gc_alloc(4, false);
 mp_printf(&mp_plat_print, "%p\n", gc_realloc(p, 0, false));

 // calling gc_nbytes with a non-heap pointer
 mp_printf(&mp_plat_print, "%p\n", gc_nbytes(NULL));
 }

 // vstr
 {
 mp_printf(&mp_plat_print, "# vstr\n");
 vstr_t *vstr = vstr_new(16);
 vstr_hint_size(vstr, 32);
 vstr_add_str(vstr, "ts");
 vstr_ins_byte(vstr, 1, 'e');
 vstr_ins_char(vstr, 3, 't');
 vstr_ins_char(vstr, 10, 's');
 mp_printf(&mp_plat_print, "%.*s\n", (int)vstr->len, vstr->buf);

 vstr_cut_head_bytes(vstr, 2);
 mp_printf(&mp_plat_print, "%.*s\n", (int)vstr->len, vstr->buf);

 vstr_cut_tail_bytes(vstr, 10);
 mp_printf(&mp_plat_print, "%.*s\n", (int)vstr->len, vstr->buf);

 vstr_printf(vstr, "t%cst", 'e');
 mp_printf(&mp_plat_print, "%.*s\n", (int)vstr->len, vstr->buf);

 vstr_cut_out_bytes(vstr, 3, 10);
 mp_printf(&mp_plat_print, "%.*s\n", (int)vstr->len, vstr->buf);

 VSTR_FIXED(fix, 4);
 nlr_buf_t nlr;
 if (nlr_push(&nlr) == 0) {
 vstr_add_str(&fix, "large");
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }

 fix.len = fix.alloc;
 if (nlr_push(&nlr) == 0) {
 vstr_null_terminated_str(&fix);
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }
 }

 // repl autocomplete
 {
 mp_printf(&mp_plat_print, "# repl\n");

 const char *str;
 size_t len = mp_repl_autocomplete("__n", 3, &mp_plat_print, &str);
 mp_printf(&mp_plat_print, "%.*s\n", (int)len, str);

 mp_store_global(MP_QSTR_sys, mp_import_name(MP_QSTR_sys, mp_const_none, MP_OBJ_NEW_SMALL_INT(0)));
 mp_repl_autocomplete("sys.", 4, &mp_plat_print, &str);
 len = mp_repl_autocomplete("sys.impl", 8, &mp_plat_print, &str);
 mp_printf(&mp_plat_print, "%.*s\n", (int)len, str);
 }

 // attrtuple
 {
 mp_printf(&mp_plat_print, "# attrtuple\n");

 static const qstr fields[] = {MP_QSTR_start, MP_QSTR_stop, MP_QSTR_step};
 static const mp_obj_t items[] = {MP_OBJ_NEW_SMALL_INT(1), MP_OBJ_NEW_SMALL_INT(2), MP_OBJ_NEW_SMALL_INT(3)};
 mp_obj_print_helper(&mp_plat_print, mp_obj_new_attrtuple(fields, 3, items), PRINT_REPR);
 mp_printf(&mp_plat_print, "\n");
 }

 // str
 {
 mp_printf(&mp_plat_print, "# str\n");

 // intern string
 mp_printf(&mp_plat_print, "%d\n", mp_obj_is_qstr(mp_obj_str_intern(mp_obj_new_str("intern me", 9))));
 }

 // bytearray
 {
 mp_printf(&mp_plat_print, "# bytearray\n");

 // create a bytearray via mp_obj_new_bytearray
 mp_buffer_info_t bufinfo;
 mp_get_buffer_raise(mp_obj_new_bytearray(4, "data"), &bufinfo, MP_BUFFER_RW);
 mp_printf(&mp_plat_print, "%.*s\n", bufinfo.len, bufinfo.buf);
 }

 // mpz
 {
 mp_printf(&mp_plat_print, "# mpz\n");

 mp_uint_t value;
 mpz_t mpz;
 mpz_init_zero(&mpz);

 // mpz_as_uint_checked, with success
 mpz_set_from_int(&mpz, 12345678);
 mp_printf(&mp_plat_print, "%d\n", mpz_as_uint_checked(&mpz, &value));
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_as_uint_checked, with negative arg
 mpz_set_from_int(&mpz, -1);
 mp_printf(&mp_plat_print, "%d\n", mpz_as_uint_checked(&mpz, &value));

 // mpz_as_uint_checked, with overflowing arg
 mpz_set_from_int(&mpz, 1);
 mpz_shl_inpl(&mpz, &mpz, 70);
 mp_printf(&mp_plat_print, "%d\n", mpz_as_uint_checked(&mpz, &value));

 // mpz_set_from_float with inf as argument
 mpz_set_from_float(&mpz, 1.0 / 0.0);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_set_from_float with 0 as argument
 mpz_set_from_float(&mpz, 0);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_set_from_float with 0<x<1 as argument
 mpz_set_from_float(&mpz, 1e-10);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_set_from_float with 1<=x<2 as argument
 mpz_set_from_float(&mpz, 1.5);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_set_from_float with 2<x as argument
 mpz_set_from_float(&mpz, 12345);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);

 // mpz_mul_inpl with dest==rhs, lhs!=rhs
 mpz_t mpz2;
 mpz_set_from_int(&mpz, 2);
 mpz_init_from_int(&mpz2, 3);
 mpz_mul_inpl(&mpz, &mpz2, &mpz);
 mpz_as_uint_checked(&mpz, &value);
 mp_printf(&mp_plat_print, "%d\n", (int)value);
 }

 // runtime utils
 {
 mp_printf(&mp_plat_print, "# runtime utils\n");

 // call mp_call_function_1_protected
 mp_call_function_1_protected(MP_OBJ_FROM_PTR(&mp_builtin_abs_obj), MP_OBJ_NEW_SMALL_INT(1));
 // call mp_call_function_1_protected with invalid args
 mp_call_function_1_protected(MP_OBJ_FROM_PTR(&mp_builtin_abs_obj), mp_obj_new_str("abc", 3));

 // call mp_call_function_2_protected
 mp_call_function_2_protected(MP_OBJ_FROM_PTR(&mp_builtin_divmod_obj), MP_OBJ_NEW_SMALL_INT(1), MP_OBJ_NEW_SMALL_INT(1));
 // call mp_call_function_2_protected with invalid args
 mp_call_function_2_protected(MP_OBJ_FROM_PTR(&mp_builtin_divmod_obj), mp_obj_new_str("abc", 3), mp_obj_new_str("abc", 3));

 // mp_obj_int_get_uint_checked with non-negative small-int
 mp_printf(&mp_plat_print, "%d\n", (int)mp_obj_int_get_uint_checked(MP_OBJ_NEW_SMALL_INT(1)));

 // mp_obj_int_get_uint_checked with non-negative big-int
 mp_printf(&mp_plat_print, "%d\n", (int)mp_obj_int_get_uint_checked(mp_obj_new_int_from_ll(2)));

 // mp_obj_int_get_uint_checked with negative small-int (should raise exception)
 nlr_buf_t nlr;
 if (nlr_push(&nlr) == 0) {
 mp_obj_int_get_uint_checked(MP_OBJ_NEW_SMALL_INT(-1));
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }

 // mp_obj_int_get_uint_checked with negative big-int (should raise exception)
 if (nlr_push(&nlr) == 0) {
 mp_obj_int_get_uint_checked(mp_obj_new_int_from_ll(-2));
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }

 // call mp_obj_new_exception_args (it's a part of the public C API and not used in the core)
 mp_obj_print_exception(&mp_plat_print, mp_obj_new_exception_args(&mp_type_ValueError, 0, NULL));
 }

 // warning
 {
 mp_emitter_warning(MP_PASS_CODE_SIZE, "test");
 }

 // format float
 {
 mp_printf(&mp_plat_print, "# format float\n");

 // format with inadequate buffer size
 char buf[5];
 mp_format_float(1, buf, sizeof(buf), 'g', 0, '+');
 mp_printf(&mp_plat_print, "%s\n", buf);

 // format with just enough buffer so that precision must be
 // set from 0 to 1 twice
 char buf2[8];
 mp_format_float(1, buf2, sizeof(buf2), 'g', 0, '+');
 mp_printf(&mp_plat_print, "%s\n", buf2);

 // format where precision is trimmed to avoid buffer overflow
 mp_format_float(1, buf2, sizeof(buf2), 'e', 0, '+');
 mp_printf(&mp_plat_print, "%s\n", buf2);
 }

 // binary
 {
 mp_printf(&mp_plat_print, "# binary\n");

 // call function with float and double typecodes
 float far[1];
 double dar[1];
 mp_binary_set_val_array_from_int('f', far, 0, 123);
 mp_printf(&mp_plat_print, "%.0f\n", (double)far[0]);
 mp_binary_set_val_array_from_int('d', dar, 0, 456);
 mp_printf(&mp_plat_print, "%.0lf\n", dar[0]);
 }

 // VM
 {
 mp_printf(&mp_plat_print, "# VM\n");

 // call mp_execute_bytecode with invalide bytecode (should raise NotImplementedError)
 mp_obj_fun_bc_t fun_bc;
 fun_bc.bytecode = (const byte *)"\x01"; // just needed for n_state
 mp_code_state_t *code_state = m_new_obj_var(mp_code_state_t, mp_obj_t, 1);
 code_state->fun_bc = &fun_bc;
 code_state->ip = (const byte *)"\x00"; // just needed for an invalid opcode
 code_state->sp = &code_state->state[0];
 code_state->exc_sp_idx = 0;
 code_state->old_globals = NULL;
 mp_vm_return_kind_t ret = mp_execute_bytecode(code_state, MP_OBJ_NULL);
 mp_printf(&mp_plat_print, "%d %d\n", ret, mp_obj_get_type(code_state->state[0]) == &mp_type_NotImplementedError);
 }

 // scheduler
 {
 mp_printf(&mp_plat_print, "# scheduler\n");

 // lock scheduler
 mp_sched_lock();

 // schedule multiple callbacks; last one should fail
 for (int i = 0; i < 5; ++i) {
 mp_printf(&mp_plat_print, "sched(%d)=%d\n", i, mp_sched_schedule(MP_OBJ_FROM_PTR(&mp_builtin_print_obj), MP_OBJ_NEW_SMALL_INT(i)));
 }

 // test nested locking/unlocking
 mp_sched_lock();
 mp_sched_unlock();

 // shouldn't do anything while scheduler is locked
 mp_handle_pending(true);

 // unlock scheduler
 mp_sched_unlock();
 mp_printf(&mp_plat_print, "unlocked\n");

 // drain pending callbacks
 while (mp_sched_num_pending()) {
 mp_handle_pending(true);
 }

 // setting the keyboard interrupt and raising it during mp_handle_pending
 mp_keyboard_interrupt();
 nlr_buf_t nlr;
 if (nlr_push(&nlr) == 0) {
 mp_handle_pending(true);
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }

 // setting the keyboard interrupt (twice) and cancelling it during mp_handle_pending
 mp_keyboard_interrupt();
 mp_keyboard_interrupt();
 mp_handle_pending(false);

 // setting keyboard interrupt and a pending event (intr should be handled first)
 mp_sched_schedule(MP_OBJ_FROM_PTR(&mp_builtin_print_obj), MP_OBJ_NEW_SMALL_INT(10));
 mp_keyboard_interrupt();
 if (nlr_push(&nlr) == 0) {
 mp_handle_pending(true);
 nlr_pop();
 } else {
 mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
 }
 mp_handle_pending(true);
 }

 // ringbuf
 {
 byte buf[100];
 ringbuf_t ringbuf = {buf, sizeof(buf), 0, 0};

 mp_printf(&mp_plat_print, "# ringbuf\n");

 // Single-byte put/get with empty ringbuf.
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 ringbuf_put(&ringbuf, 22);
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 mp_printf(&mp_plat_print, "%d\n", ringbuf_get(&ringbuf));
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));

 // Two-byte put/get with empty ringbuf.
 ringbuf_put16(&ringbuf, 0xaa55);
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 mp_printf(&mp_plat_print, "%04x\n", ringbuf_get16(&ringbuf));
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));

 // Two-byte put with full ringbuf.
 for (int i = 0; i < 99; ++i) {
 ringbuf_put(&ringbuf, i);
 }
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 mp_printf(&mp_plat_print, "%d\n", ringbuf_put16(&ringbuf, 0x11bb));
 // Two-byte put with one byte free.
 ringbuf_get(&ringbuf);
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 mp_printf(&mp_plat_print, "%d\n", ringbuf_put16(&ringbuf, 0x3377));
 ringbuf_get(&ringbuf);
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));
 mp_printf(&mp_plat_print, "%d\n", ringbuf_put16(&ringbuf, 0xcc99));
 for (int i = 0; i < 97; ++i) {
 ringbuf_get(&ringbuf);
 }
 mp_printf(&mp_plat_print, "%04x\n", ringbuf_get16(&ringbuf));
 mp_printf(&mp_plat_print, "%d %d\n", ringbuf_free(&ringbuf), ringbuf_avail(&ringbuf));

 // Two-byte put with wrap around on first byte:
 ringbuf.iput = 0;
 ringbuf.iget = 0;
 for (int i = 0; i < 99; ++i) {
 ringbuf_put(&ringbuf, i);
 ringbuf_get(&ringbuf);
 }
 mp_printf(&mp_plat_print, "%d\n", ringbuf_put16(&ringbuf, 0x11bb));
 mp_printf(&mp_plat_print, "%04x\n", ringbuf_get16(&ringbuf));

 // Two-byte put with wrap around on second byte:
 ringbuf.iput = 0;
 ringbuf.iget = 0;
 for (int i = 0; i < 98; ++i) {
 ringbuf_put(&ringbuf, i);
 ringbuf_get(&ringbuf);
 }
 mp_printf(&mp_plat_print, "%d\n", ringbuf_put16(&ringbuf, 0x22ff));
 mp_printf(&mp_plat_print, "%04x\n", ringbuf_get16(&ringbuf));

 // Two-byte get from empty ringbuf.
 ringbuf.iput = 0;
 ringbuf.iget = 0;
 mp_printf(&mp_plat_print, "%d\n", ringbuf_get16(&ringbuf));

 // Two-byte get from ringbuf with one byte available.
 ringbuf.iput = 0;
 ringbuf.iget = 0;
 ringbuf_put(&ringbuf, 0xaa);
 mp_printf(&mp_plat_print, "%d\n", ringbuf_get16(&ringbuf));
 }

 // pairheap
 {
 mp_printf(&mp_plat_print, "# pairheap\n");

 // Basic case.
 int t0[] = {0, 2, 1, 3};
 pairheap_test(MP_ARRAY_SIZE(t0), t0);

 // All pushed in reverse order.
 int t1[] = {7, 6, 5, 4, 3, 2, 1, 0};
 pairheap_test(MP_ARRAY_SIZE(t1), t1);

 // Basic deletion.
 int t2[] = {1, -1, -1, 1, 2, -2, 2, 3, -3};
 pairheap_test(MP_ARRAY_SIZE(t2), t2);

 // Deletion of first child that has next node (the -3).
 int t3[] = {1, 2, 3, 4, -1, -3};
 pairheap_test(MP_ARRAY_SIZE(t3), t3);

 // Deletion of node that's not first child (the -2).
 int t4[] = {1, 2, 3, 4, -2};
 pairheap_test(MP_ARRAY_SIZE(t4), t4);

 // Deletion of node that's not first child and has children (the -3).
 int t5[] = {3, 4, 5, 1, 2, -3};
 pairheap_test(MP_ARRAY_SIZE(t5), t5);
 }

 // mp_obj_is_type and derivatives
 {
 mp_printf(&mp_plat_print, "# mp_obj_is_type\n");

 // mp_obj_is_bool accepts only booleans
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_bool(mp_const_true), mp_obj_is_bool(mp_const_false));
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_bool(MP_OBJ_NEW_SMALL_INT(1)), mp_obj_is_bool(mp_const_none));

 // mp_obj_is_integer accepts ints and booleans
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_integer(MP_OBJ_NEW_SMALL_INT(1)), mp_obj_is_integer(mp_obj_new_int_from_ll(1)));
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_integer(mp_const_true), mp_obj_is_integer(mp_const_false));
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_integer(mp_obj_new_str("1", 1)), mp_obj_is_integer(mp_const_none));

 // mp_obj_is_int accepts small int and object ints
 mp_printf(&mp_plat_print, "%d %d\n", mp_obj_is_int(MP_OBJ_NEW_SMALL_INT(1)), mp_obj_is_int(mp_obj_new_int_from_ll(1)));
 }

 mp_printf(&mp_plat_print, "# end coverage.c\n");

 mp_obj_streamtest_t *s = m_new_obj(mp_obj_streamtest_t);
 s->base.type = &mp_type_stest_fileio;
 s->buf = NULL;
 s->len = 0;
 s->pos = 0;
 s->error_code = 0;
 mp_obj_streamtest_t *s2 = m_new_obj(mp_obj_streamtest_t);
 s2->base.type = &mp_type_stest_textio2;

 // return a tuple of data for testing on the Python side
 mp_obj_t items[] = {(mp_obj_t)&str_no_hash_obj, (mp_obj_t)&bytes_no_hash_obj, MP_OBJ_FROM_PTR(s), MP_OBJ_FROM_PTR(s2)};
 return mp_obj_new_tuple(MP_ARRAY_SIZE(items), items);
}
MP_DEFINE_CONST_FUN_OBJ_0(extra_coverage_obj, extra_coverage);

#endif