duktape/api-testcases/test-require-int.c

/*===
*** test_1 (duk_safe_call)
number: 123.000000 -> int: 123
number: 123.456000 -> int: 123
number: nan -> int: 0
number: -inf -> int: DUK_INT_MIN
number: inf -> int: DUK_INT_MAX
==> rc=0, result='undefined'
*** test_2 (duk_safe_call)
==> rc=1, result='TypeError: not number'
*** test_3 (duk_safe_call)
==> rc=1, result='TypeError: not number'
*** test_4 (duk_safe_call)
==> rc=1, result='TypeError: not number'
===*/

static duk_ret_t test_1(duk_context *ctx) {
	duk_idx_t i;

	duk_set_top(ctx, 0);
	duk_push_int(ctx, 123);
	duk_push_number(ctx, 123.456);
	duk_push_nan(ctx);
	duk_push_number(ctx, -INFINITY);
	duk_push_number(ctx, INFINITY);

	for (i = 0; i < 5; i++) {
		duk_int_t ival = duk_require_int(ctx, i);
		duk_double_t dval = duk_get_number(ctx, i);

		printf("number: %lf -> int: ", (double) dval);
		if (ival == DUK_INT_MIN) {
			printf("DUK_INT_MIN");
		} else if (ival == DUK_INT_MAX) {
			printf("DUK_INT_MAX");
		} else {
			printf("%ld", (long) ival);
		}
		printf("\n");
	}
	return 0;
}

static duk_ret_t test_2(duk_context *ctx) {
	duk_set_top(ctx, 0);
	duk_push_null(ctx);
	printf("int: %ld\n", (long) duk_require_int(ctx, 0));
	return 0;
}

static duk_ret_t test_3(duk_context *ctx) {
	duk_set_top(ctx, 0);
	printf("int: %ld\n", (long) duk_require_int(ctx, 0));
	return 0;
}

static duk_ret_t test_4(duk_context *ctx) {
	duk_set_top(ctx, 0);
	printf("int: %ld\n", (long) duk_require_int(ctx, DUK_INVALID_INDEX));
	return 0;
}

void test(duk_context *ctx) {
	TEST_SAFE_CALL(test_1);
	TEST_SAFE_CALL(test_2);
	TEST_SAFE_CALL(test_3);
	TEST_SAFE_CALL(test_4);
}