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wasmer/lib/runtime-c-api/tests/test-instantiate.c

58 lines
1.8 KiB
C

#include <stdio.h>
#include "../wasmer.h"
#include <assert.h>
#include <stdint.h>
#include <string.h>
int main()
{
// Read the wasm file bytes
FILE *file = fopen("assets/sum.wasm", "r");
fseek(file, 0, SEEK_END);
long len = ftell(file);
uint8_t *bytes = malloc(len);
fseek(file, 0, SEEK_SET);
fread(bytes, 1, len, file);
fclose(file);
wasmer_import_t imports[] = {};
wasmer_instance_t *instance = NULL;
wasmer_result_t compile_result = wasmer_instantiate(&instance, bytes, len, imports, 0);
printf("Compile result: %d\n", compile_result);
assert(compile_result == WASMER_OK);
wasmer_value_t param_one;
param_one.tag = WASM_I32;
param_one.value.I32 = 7;
wasmer_value_t param_two;
param_two.tag = WASM_I32;
param_two.value.I32 = 8;
wasmer_value_t params[] = {param_one, param_two};
wasmer_value_t result_one;
wasmer_value_t results[] = {result_one};
wasmer_result_t call_result = wasmer_instance_call(instance, "sum", params, 2, results, 1);
printf("Call result: %d\n", call_result);
printf("Result: %d\n", results[0].value.I32);
assert(results[0].value.I32 == 15);
assert(call_result == WASMER_OK);
wasmer_result_t call_result2 = wasmer_instance_call(instance, "sum", params, 1, results, 1);
printf("Call result bad: %d\n", call_result2);
assert(call_result2 == WASMER_ERROR);
int error_len = wasmer_last_error_length();
printf("Error len: `%d`\n", error_len);
char *error_str = malloc(error_len);
wasmer_last_error_message(error_str, error_len);
printf("Error str: `%s`\n", error_str);
assert(0 == strcmp(error_str, "Call error: Parameters of type [I32] did not match signature [I32, I32] -> [I32]"));
free(error_str);
printf("Destroy instance\n");
wasmer_instance_destroy(instance);
return 0;
}