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compiler.c
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compiler.c
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/**
* JCUnit - a very simple unit testing framework for C
*
* Copyright (C) 2021-2022 Denis Korchagin <denis.korchagin.1995@gmail.com>
*
* This file is part of JCUnit
*
* For the full license information, please view the LICENSE
* file that was distributed with this source code.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation of version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <memory.h>
#include <assert.h>
#include "headers/compiler.h"
#include "headers/token.h"
#include "headers/parse.h"
#include "headers/object-allocator.h"
#include "headers/bytes-allocator.h"
#include "headers/util.h"
#include "headers/errors.h"
#define WHEN_RUN_REQUIREMENT_NAME "whenRun"
#define GIVEN_REQUIREMENT_NAME "given"
#define EXPECT_OUTPUT_REQUIREMENT_NAME "expectOutput"
#define SHOULD_BE_SKIPPED_REQUIREMENT_NAME "shouldBeSkipped"
#define TEST_PROGRAM_RUNNER_STREAM_STDOUT_NAME "stdout"
#define TEST_PROGRAM_RUNNER_STREAM_STDERR_NAME "stderr"
struct test_requirement_compiler_context
{
struct ast_requirement * requirement;
struct program_runner_test * test;
};
typedef struct abstract_test * test_compiler_func(struct ast_test * ast_test);
typedef void test_requirement_compiler_func(struct test_requirement_compiler_context * context);
static struct test_suite * do_compile_test_suite(struct source * source, struct slist * ast_tests);
static struct abstract_test * compile_test(struct ast_test * ast_test);
static struct abstract_test * program_runner_test_compiler(struct ast_test * ast_test);
static void test_arguments_compiler(struct abstract_test * test, struct ast_test * ast_test);
static struct ast_requirement * find_ast_requirement_by_name(
struct ast_test * ast_test,
const char * requirement_name
);
static test_compiler_func * resolve_test_compiler_func(struct ast_test * ast_test);
static test_requirement_compiler_func * resolve_test_requirement_compiler(struct ast_requirement * requirement);
static int resolve_stream_code_by_name(struct string * name);
static struct test_suite * make_test_suite(struct source * source, const char * name, unsigned int tests_count);
static struct program_runner_test * make_program_runner_test(void);
static void given_test_requirement_compiler(struct test_requirement_compiler_context * context);
static void when_run_requirement_compiler(struct test_requirement_compiler_context * context);
static void expect_output_requirement_compiler(struct test_requirement_compiler_context * context);
static void should_be_skipped_requirement_compiler(struct test_requirement_compiler_context * context);
static void unknown_test_requirement_compiler(struct test_requirement_compiler_context * context);
struct test_suite * compile_test_suite(struct source * source)
{
assert(source != NULL);
struct tokenizer_context * context = make_tokenizer_context(source->filename);
struct slist * ast_tests = parse_test_suite(context);
destroy_tokenizer_context(context);
struct test_suite * test_suite = do_compile_test_suite(source, ast_tests);
release_ast_tests(ast_tests);
free_slist(ast_tests);
return test_suite;
}
struct test_suite * do_compile_test_suite(struct source * source, struct slist * ast_tests)
{
assert(source != NULL);
assert(ast_tests != NULL);
const char * name = basename(source->filename);
if (name == NULL) {
name = "<unnamed>";
}
struct abstract_test * test;
struct ast_test * ast_test;
struct test_suite * test_suite = make_test_suite(source, name, slist_count(ast_tests));
unsigned int i = 0;
slist_foreach(iterator, ast_tests, {
ast_test = list_get_owner(iterator, struct ast_test, list_entry);
test = compile_test(ast_test);
test->test_suite = test_suite;
test_suite->tests[i++] = test;
});
return test_suite;
}
struct test_suite * make_test_suite(struct source * source, const char * name, unsigned int tests_count)
{
struct test_suite * test_suite = alloc_test_suite();
memset((void *)test_suite, 0, sizeof(struct test_suite));
test_suite->name = name;
test_suite->source = source;
test_suite->tests_count = tests_count;
test_suite->tests = (struct abstract_test **) alloc_bytes(tests_count * sizeof(void *));
return test_suite;
}
struct abstract_test * compile_test(struct ast_test * ast_test)
{
assert(ast_test != NULL);
test_compiler_func * test_compiler = resolve_test_compiler_func(ast_test);
if (test_compiler == NULL) {
jcunit_fatal_error("Cannot find any compiler to compile the test!");
}
struct abstract_test * test = test_compiler(ast_test);
if ((test->flags & TEST_COMPLETE_MASK) != TEST_COMPLETE_MASK) {
test->flags |= TEST_FLAG_INCOMPLETE;
}
return test;
}
test_compiler_func * resolve_test_compiler_func(struct ast_test * ast_test)
{
assert(ast_test != NULL);
struct ast_requirement * requirement = find_ast_requirement_by_name(ast_test, WHEN_RUN_REQUIREMENT_NAME);
if (requirement != NULL) {
return program_runner_test_compiler;
}
return NULL;
}
struct ast_requirement * find_ast_requirement_by_name(
struct ast_test * ast_test,
const char * requirement_name
) {
assert(ast_test != NULL);
size_t len = strlen(requirement_name);
struct ast_requirement * requirement;
slist_foreach(iterator, &ast_test->requirements, {
requirement = list_get_owner(iterator, struct ast_requirement, list_entry);
if (requirement->name->len == len && strncmp(requirement->name->value, requirement_name, len) == 0) {
return requirement;
}
});
return NULL;
}
struct abstract_test * program_runner_test_compiler(struct ast_test * ast_test)
{
struct test_requirement_compiler_context context;
struct program_runner_test * test = make_program_runner_test();
test_arguments_compiler((struct abstract_test *) test, ast_test);
slist_foreach(iterator, &ast_test->requirements, {
struct ast_requirement * requirement = list_get_owner(iterator, struct ast_requirement, list_entry);
test_requirement_compiler_func * test_requirement_compiler = resolve_test_requirement_compiler(requirement);
context.test = test;
context.requirement = requirement;
test_requirement_compiler(&context);
});
return (struct abstract_test *) test;
}
struct program_runner_test * make_program_runner_test(void)
{
struct program_runner_test * test = alloc_program_runner_test();
memset((void *)test, 0, sizeof(struct program_runner_test));
test->base.kind = TEST_KIND_PROGRAM_RUNNER;
return test;
}
test_requirement_compiler_func * resolve_test_requirement_compiler(struct ast_requirement * requirement)
{
const char * requirement_name = requirement->name->value;
if (strcmp(GIVEN_REQUIREMENT_NAME, requirement_name) == 0) {
return given_test_requirement_compiler;
}
if (strcmp(WHEN_RUN_REQUIREMENT_NAME, requirement_name) == 0) {
return when_run_requirement_compiler;
}
if (strcmp(EXPECT_OUTPUT_REQUIREMENT_NAME, requirement_name) == 0) {
return expect_output_requirement_compiler;
}
if (strcmp(SHOULD_BE_SKIPPED_REQUIREMENT_NAME, requirement_name) == 0) {
return should_be_skipped_requirement_compiler;
}
return unknown_test_requirement_compiler;
}
void given_test_requirement_compiler(struct test_requirement_compiler_context * context)
{
struct string * given_type = NULL, * given_filename = NULL;
slist_foreach(iterator, &context->requirement->arguments, {
struct ast_requirement_argument * argument = list_get_owner(
iterator,
struct ast_requirement_argument,
list_entry
);
if (argument->name == NULL) {
given_type = argument->value;
continue;
}
if (strcmp("type", argument->name->value) == 0) {
if (given_type != NULL) {
jcunit_fatal_error("Cannot be both definition of 'type' named and unnamed or redefinition of 'type' for the 'given' requirement!");
}
given_type = argument->value;
continue;
}
if (strcmp("filename", argument->name->value) == 0) {
if (given_filename != NULL) {
jcunit_fatal_error("Cannot be both redefinition of 'filename' for the 'given' requirement!");
}
given_filename = argument->value;
continue;
}
jcunit_fatal_error("Unknown named argument '%s' for the 'given' requirement!", argument->name->value);
});
if (given_type == NULL) {
jcunit_fatal_error("Missing the 'type' named argument (can be unnamed) for the 'given' requirement!");
}
if (given_type->len == 0) {
jcunit_fatal_error("The type cannot be empty for the 'given' requirement!");
}
if (!string_equals_with_cstring(given_type, "file")) {
jcunit_fatal_error("The unknown \"%s\" given type!", given_type->value);
}
if (given_filename != NULL) {
if (given_filename->len == 0) {
jcunit_fatal_error("The filename cannot be empty for the 'given' requirement!");
}
if (strchr(given_filename->value, '/') != NULL) {
jcunit_fatal_error("Cannot be any path separators in 'filename' argument of the 'given' requirement!");
}
}
context->test->given_file_content = context->requirement->content;
context->test->given_filename = given_filename;
context->test->base.flags |= TEST_FLAG_HAS_GIVEN;
if (context->requirement->content != NULL)
context->requirement->content->flags |= STRING_FLAG_DONT_RELEASE;
if (given_filename != NULL)
given_filename->flags |= STRING_FLAG_DONT_RELEASE;
}
void when_run_requirement_compiler(struct test_requirement_compiler_context * context)
{
if (context->requirement->content != NULL) {
jcunit_fatal_error("The 'whenRun' requirement must not contain any content!");
}
struct string * program = NULL, * args = NULL;
slist_foreach(argument_iterator, &context->requirement->arguments, {
struct ast_requirement_argument * argument = list_get_owner(
argument_iterator,
struct ast_requirement_argument,
list_entry
);
if (argument->name == NULL) {
program = argument->value;
continue;
}
if (strcmp("program", argument->name->value) == 0) {
if (program != NULL) {
jcunit_fatal_error("Cannot be both definition of 'program' named and unnamed for the 'whenRun' requirement!");
}
program = argument->value;
continue;
}
if (argument->name != NULL && strcmp("args", argument->name->value) == 0) {
args = argument->value;
continue;
}
jcunit_fatal_error("Unknown named argument '%s' for the 'whenRun' requirement!", argument->name->value);
});
if (program == NULL) {
jcunit_fatal_error("Missing the 'program' named argument (can be unnamed) for the 'whenRun' requirement!");
}
if (program->len == 0) {
jcunit_fatal_error("The program cannot be empty for the 'whenRun' requirement!");
}
if (args != NULL && args->len == 0) {
jcunit_fatal_error("The args cannot be empty for the 'whenRun' requirement!");
}
context->test->program_path = program;
context->test->program_args = args;
context->test->base.flags |= TEST_FLAG_HAS_WHEN;
program->flags |= STRING_FLAG_DONT_RELEASE;
if (args != NULL)
args->flags |= STRING_FLAG_DONT_RELEASE;
}
void expect_output_requirement_compiler(struct test_requirement_compiler_context * context)
{
unsigned int arguments_count = slist_count(&context->requirement->arguments);
if (arguments_count == 0) {
jcunit_fatal_error("No arguments are given for 'expectOutput' directive!");
}
struct ast_requirement_argument * argument = list_get_owner(
context->requirement->arguments.next,
struct ast_requirement_argument,
list_entry
);
if (argument->name != NULL && strcmp("stream", argument->name->value) != 0) {
jcunit_fatal_error("Unexpected named argument '%s' for the 'expectOutput' requirement!", argument->name->value);
}
if (argument->value->len == 0) {
jcunit_fatal_error("The stream name cannot be empty for the 'expectOutput' requirement!");
}
int stream_code = resolve_stream_code_by_name(argument->value);
if (stream_code == TEST_PROGRAM_RUNNER_EXPECT_OUTPUT_STREAM_UNKNOWN) {
jcunit_fatal_error(
"The unknown stream name \"%s\" for 'expectOutput' requirement!",
argument->value->value
);
}
context->test->stream_code = stream_code;
context->test->expected_output = context->requirement->content;
context->test->base.flags |= TEST_FLAG_HAS_THEN;
if (context->requirement->content != NULL)
context->requirement->content->flags |= STRING_FLAG_DONT_RELEASE;
}
void should_be_skipped_requirement_compiler(struct test_requirement_compiler_context * context)
{
context->test->base.flags |= TEST_FLAG_SKIPPED;
}
void unknown_test_requirement_compiler(struct test_requirement_compiler_context * context)
{
jcunit_fatal_error(
"An unknown '%s' requirement for the test '%s'!",
context->requirement->name->value,
context->test->base.name->value
);
}
int resolve_stream_code_by_name(struct string * name)
{
if (string_equals_with_cstring(name, TEST_PROGRAM_RUNNER_STREAM_STDOUT_NAME)) {
return TEST_PROGRAM_RUNNER_EXPECT_OUTPUT_STREAM_STDOUT;
}
if (string_equals_with_cstring(name, TEST_PROGRAM_RUNNER_STREAM_STDERR_NAME)) {
return TEST_PROGRAM_RUNNER_EXPECT_OUTPUT_STREAM_STDERR;
}
return TEST_PROGRAM_RUNNER_EXPECT_OUTPUT_STREAM_UNKNOWN;
}
void test_arguments_compiler(struct abstract_test * test, struct ast_test * ast_test)
{
struct string * name = NULL;
slist_foreach(iterator, &ast_test->arguments, {
struct ast_requirement_argument * argument = list_get_owner(
iterator,
struct ast_requirement_argument,
list_entry
);
if (argument->name == NULL) {
name = argument->value;
continue;
}
if (strcmp("name", argument->name->value) == 0) {
if (name != NULL) {
jcunit_fatal_error("Cannot be both definition of 'name' named and unnamed for the 'test' directive!");
}
name = argument->value;
continue;
}
jcunit_fatal_error("Unknown named argument '%s' for the 'test' directive!", argument->name->value);
});
if (name == NULL) {
jcunit_fatal_error("Missing the 'name' named argument (can be unnamed) for the 'test' directive!");
}
if (name->len == 0) {
jcunit_fatal_error("The 'name' cannot be empty for the 'test' directive!");
}
name->flags |= STRING_FLAG_DONT_RELEASE;
test->name = name;
}