import progc-base without CUnit

This commit is contained in:
Robert Hunger 2020-02-06 23:41:26 +01:00
parent 1b60d4f971
commit ec28da1aff
7 changed files with 879 additions and 0 deletions

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QUIET = NO
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WARN_IF_DOC_ERROR = YES
WARN_NO_PARAMDOC = YES
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WARN_FORMAT = "$file:$line: $text"
WARN_LOGFILE =
#---------------------------------------------------------------------------
# Configuration options related to the input files
#---------------------------------------------------------------------------
INPUT = .
INPUT_ENCODING = UTF-8
FILE_PATTERNS = *.h *.c *.dox
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EXCLUDE =
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EMPTY :=
SPACE := $(EMPTY) $(EMPTY)
NL := $(EMPTY)\\n$(EMPTY)
LABS := $(sort $(wildcard lab??-* testlib))
default:
@echo "**** PROGC Labs ****"
@echo "$(subst $(SPACE),$(NL),$(LABS))"
@echo ""
@echo "**** Prerequisites ****"
@echo "1. Change into the testlib directory"
@echo " cd testlib"
@echo "2. Build and install the library, e.g."
@echo " make clean"
@echo " make default"
@echo " make test"
@echo " make install"
@echo " make doc"
@echo " Caution: make sure the tests, installation and documentation does not produce any error."
@echo "3. View the produced documentation, e.g."
@echo " firefox doc/index.html"
@echo ""
@echo "**** How to build and run a lab? ****"
@echo "1. Change into the respective directory, e.g."
@echo " cd $(firstword $(LABS))"
@echo "2. Build the lab, e.g."
@echo " make"
@echo " The resulting executable is located in the bin folder."
@echo "3. Build and run the tests, e.g."
@echo " make test"
@echo "4. Build the HTML documentation from the sources, e.g."
@echo " make doc"
@echo " The produced HTML documentation is located in the doc folder. Open the index.html file in a HTML browser."
@echo "Notes:"
@echo "- You may cleanup the builds, e.g."
@echo " make clean"

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# what to produce
TARGET := bin/libprogctest.a
# public headers
HEADERS := src/test_utils.h
# implementation files
SOURCES := src/test_utils.c
# test implementations
TSTSOURCES := tests/tests.c
# directories to create (and remove upon cleanup)
CREATEDIRS := bin doc
# list of derived file names from the source names
OBJECTS := $(SOURCES:%.c=%.o) # list of gcc -c ... produced *.o files
DEPS := $(SOURCES:%.c=%.d) # list of gcc -MD ... produced *.d files
TSTOBJECTS := $(TSTSOURCES:%.c=%.o) # list of gcc -c ... produced *.o files
TSTDEPS := $(TSTSOURCES:%.c=%.d) # list of gcc -MD ... produced *.d files
TSTTARGET := $(CURDIR)/tests/runtest
# libraries
CUNITINCDIR := $(CURDIR)/../CUnit/include
CUNITLIBDIR := $(CURDIR)/../CUnit/lib
# where to install the static library and the associated headers
INSTALLLIBDIR := $(CURDIR)/../lib
INSTALLINCDIR := $(CURDIR)/../include
# full path to the target
FULLTARGET := $(CURDIR)/$(TARGET)
# commands and flags
CC = gcc
CFLAGS = -std=c99 -Wall -g
CPPFLAGS = -MD -Isrc -Itests -I$(INSTALLINCDIR) -I$(CUNITINCDIR) -DTARGET=$(FULLTARGET)
LDFLAGS = -static -z muldefs
ARFLAGS = rc
# targets which get always visited (without checking any up-to-date state)
.PHONY: default clean test doc install mkdir
# targets
default: $(FULLTARGET)
@echo "#### $< built ####"
$(FULLTARGET): mkdir $(OBJECTS) Makefile
$(AR) $(ARFLAGS) $@ $(OBJECTS)
clean:
$(RM) $(TARGET) $(OBJECTS) $(DEPS) $(TSTTARGET) $(TSTOBJECTS) $(TSTDEPS) $(wildcard */*~ *~ tests/*.txt)
$(RM) -r $(CREATEDIRS)
@echo "#### $@ done ####"
install: $(FULLTARGET)
mkdir -p $(INSTALLLIBDIR) $(INSTALLINCDIR)
cp -f $(FULLTARGET) $(INSTALLLIBDIR)/
cp -f $(HEADERS) $(INSTALLINCDIR)/
@echo "#### $< installed ####"
doc:
doxygen ../Doxyfile > /dev/null
@echo "#### $@ done ####"
test: $(TSTTARGET)
(cd tests; $(TSTTARGET))
@echo "#### $< executed ####"
$(TSTTARGET): $(FULLTARGET) $(TSTOBJECTS)
$(LINK.c) -o $(TSTTARGET) $(TSTOBJECTS) $(FULLTARGET) -L$(CUNITLIBDIR) -lcunit
@echo "#### $@ built ####"
# create needed directories (ignoring any error)
mkdir:
-mkdir -p $(CREATEDIRS)
# read in the gcc -MD ... produced dependencies (ignoring any error)
-include $(DEPS) $(TSTDEPS)

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/**
* @mainpage PROGC - Labs
*
* @section Purpose
*
* This is a supporting test library for PROGC tests.
*
* This project needs to be built before the labs.
* It provides the needed header files in the include folder and the libraries in the lib folder.
*/

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/* ----------------------------------------------------------------------------
* -- _____ ______ _____ -
* -- |_ _| | ____|/ ____| -
* -- | | _ __ | |__ | (___ Institute of Embedded Systems -
* -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
* -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
* -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
* ----------------------------------------------------------------------------
*/
/**
* @file
* @brief Implementation of the test_utils.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include "CUnit/Basic.h"
#include "test_utils.h"
int file_exists(const char file_path[])
{
// preconditions
assert(file_path);
int errno_safe = errno;
errno = 0;
// try and forgive...
FILE *file = fopen(file_path, "r");
assert(file || (!file && (errno == ENOENT))); // either it exists or "No such file or directory" error code (see man errno).
errno = errno_safe; // fopen will set errno if the file does not exist
if (file) {
assert(0 == fclose(file));
return 1; // existed
}
return 0; // did not exist
}
void remove_file_if_exists(const char file_path[])
{
// we take the risk that between checking and removing, some undesired file access may happen and jeopardize the control logic...
if (file_exists(file_path)) {
assert(0 == unlink(file_path));
}
}
void assert_lines(const char file[], const char *lines[], size_t n_lines)
{
// preconditions
CU_ASSERT_PTR_NOT_NULL_FATAL(file);
CU_ASSERT_PTR_NOT_NULL_FATAL(lines);
// file access may always fail
FILE *input = fopen(file, "r");
if (!input) perror(file);
CU_ASSERT_PTR_NOT_NULL_FATAL(input);
// process all lines and compare to the file content
size_t i = 0;
size_t n = 0;
for(i = 0; i < n_lines && n == 0; i++) {
const char *line = lines[i];
CU_ASSERT_PTR_NOT_NULL(line);
if (line) {
size_t len = n = strlen(line);
CU_ASSERT(n > 0);
while (n > 0) {
int c = fgetc(input);
CU_ASSERT_FALSE(feof(input));
CU_ASSERT_EQUAL(c, *line);
if (c != *line) {
printf("\nfile %s: line %zu, pos %zu = %d = '%c', expected = %d = '%c'\n",
file, i+1, len-n+1, c, isprint(c) ? c : '.', *line, isprint(*line) ? *line : '.');
break;
}
line++;
n--;
}
}
}
CU_ASSERT_FALSE(feof(input));
(void)fgetc(input);
CU_ASSERT_TRUE(feof(input));
CU_ASSERT_EQUAL(i, n_lines);
CU_ASSERT_EQUAL(n, 0);
// successfully reached the end...
int fclose_result = fclose(input);
CU_ASSERT(0 == fclose_result);
// print actual versus expected in case of error
if (n != 0 || i != n_lines) {
printf("---- EXPECTED ----\n");
for(int i = 0; i < n_lines; i++) {
const char *p = lines[i];
while(p && *p) {
putchar(*p);
p++;
}
}
printf("---- ACTUAL (%s) ----\n", file);
FILE* fd = fopen(file, "r");
int last = 0;
while(fd && !feof(fd)) {
int c = fgetc(fd);
if (c != EOF) {
last = c;
putchar(c);
}
}
if (fd) fclose(fd);
if (last != '\n') putchar('\n');
printf("---- END ----\n");
}
}

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/* ----------------------------------------------------------------------------
* -- _____ ______ _____ -
* -- |_ _| | ____|/ ____| -
* -- | | _ __ | |__ | (___ Institute of Embedded Systems -
* -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
* -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
* -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
* ----------------------------------------------------------------------------
*/
/**
* @file
* @brief Common test utilities for writing PROGC tests.
*/
#ifndef _TEST_UTILS_H_
#define _TEST_UTILS_H_
#include <stdlib.h>
#include <stdio.h>
#include "CUnit/Basic.h"
/// Stringize macro (evaluates the passed macro and makes a string out of it). Non-macros are stringized as-is.
#define XSTR(x) STR(x)
/// Stringize macro (does *not* evaluate the passed macro - makes the macro *name* a string). Non-macros are stringized as-is.
#define STR(x) #x
/**
* @brief Gracefully checks by means of fopen(..., "r") if a file exists.
* @param[in] file_path The file to check for existence.
* @returns Returns 0 if the file does not exist, 1 otherwise.
* @remark If the file does not exist, errno was affected. This function takes care of this, i.e. it safes and restores the original errno state.
* @remark In case of an error situation, the function fails with a hard assert.h assertion violation.
* This allows to use the function outside of a tests, e.g. in setup and teardown functions.
*/
int file_exists(const char file_path[]);
/**
* @brief Removes the given file if it exists.
* @param[in] file_path: The path to the file which gets removed if it exists.
* @remark Silently ignores any error. If you are interrested in the errors, set first *errno* to zero, and check it after the call.
* @remark In case of an error situation, the function fails with a hard assert.h assertion violation.
* This allows to use the function outside of a tests, e.g. in setup and teardown functions.
*/
void remove_file_if_exists(const char file_path[]);
/**
* @brief Checks if the file content matches exactly the given lines.
* The lines must contain the new-line character. This is especially important if a file terminates without a new line character.
* @param[in] file: The path to the file to check against the lines.
* @param[in] lines: The array of lines which must match the file content exactly. Newlines must be part of the lines too.
* @param[in] n_lines: The number of lines in the line array.
*/
void assert_lines(const char file[], const char *lines[], size_t n_lines);
/**
* @brief The test function's callback type.
*/
typedef void (*test_function_t)(void);
/**
* @brief Boiler-plate code as a macro to define the complete body of the main function of the tests suite.
* @param[in] suite: The name of the test suite (<I>const char *</I>).
* @param[in] setup: The setup callback function which is executed before the first test is executed (*int setup(void)*).
* @param[in] cleanup: The teardown callback function which is executed after the last test is executed (*int teardown(void)*).
* @param[in] ...: The variable list of test_function callback (*void test(void)*) which constitue the test cases. They are executed in the given sequence.
* @remark Example code (see also CUnit Framework Documentation):
* @code
* // setup and teardown
* int setup(void)
* {
* // do some initialization if needed
* // ...
* return 0; // success
* }
* int teardown(void)
* {
* // do some cleanup if needed
* // ...
* return 0; // success
* }
* // tests
* void test_main_no_args(void)
* {
* // arrange
* // ...
* // act
* // ...
* // assert (use the CUnit CU_ASSERT_... macros)
* // ...
* }
* void test_main_one_arg(void)
* {
* //...
* }
* void test_main_two_args(void)
* {
* //...
* }
* // execute the tests
* int main(void)
* {
* TestMainBasic("Hello World", setup, teardown
* , test_main_no_args
* , test_main_one_arg
* , test_main_two_args
* );
* }
* @endcode
*/
#define TestMainBasic(suite, setup, cleanup, ...) \
do { \
CU_pSuite pSuite = NULL; \
\
/* initialize the CUnit test registry */ \
if (CUE_SUCCESS != CU_initialize_registry()) \
return CU_get_error(); \
\
/* functions and their names */ \
test_function_t tests[] = { __VA_ARGS__ }; \
char all_names[] = #__VA_ARGS__; \
const size_t n = sizeof(tests)/sizeof(*tests); \
const char *names[sizeof(tests)/sizeof(*tests)] = { strtok(all_names, ", ") } ; \
for(size_t i = 1; i < n; i++) { \
names[i] = strtok(NULL, ", "); \
} \
/* init suite and tests */ \
pSuite = CU_add_suite(suite, setup, cleanup); \
if (pSuite) { \
size_t i; \
for(i = 0; i < n; i++) { \
if (!CU_add_test(pSuite, names[i], tests[i])) break; \
} \
/* Run all tests using the CUnit Basic interface */ \
if (i == n) { \
CU_basic_set_mode(CU_BRM_VERBOSE); \
CU_basic_run_tests(); \
} \
} \
CU_cleanup_registry(); \
return CU_get_error(); \
} while(0) \
#endif

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/* ----------------------------------------------------------------------------
* -- _____ ______ _____ -
* -- |_ _| | ____|/ ____| -
* -- | | _ __ | |__ | (___ Institute of Embedded Systems -
* -- | | | '_ \| __| \___ \ Zuercher Hochschule Winterthur -
* -- _| |_| | | | |____ ____) | (University of Applied Sciences) -
* -- |_____|_| |_|______|_____/ 8401 Winterthur, Switzerland -
* ----------------------------------------------------------------------------
*/
/**
* @file
* @brief Test suite for the given package.
*/
#include <stdio.h>
#include <stdlib.h>
#include "CUnit/Basic.h"
#include "test_utils.h"
#ifndef TARGET // must be given by the make file --> see test target
#error missing TARGET define
#endif
/// @brief The name of the STDOUT text file.
#define OUTFILE "stdout.txt"
/// @brief The name of the STDERR text file.
#define ERRFILE "stderr.txt"
/// @brief Some test output file
#define EMPTYFILE "EmptyFile.txt"
/// @brief Some test output file
#define NONEMPTYFILE "NonEmptyFile.txt"
/// @brief Some test output file
#define NONEMPTYFILE_NONLEND "NonEmptyFileNoNlEnd.txt"
// setup & teardown
static int setup(void)
{
remove_file_if_exists(OUTFILE);
remove_file_if_exists(ERRFILE);
remove_file_if_exists(EMPTYFILE);
remove_file_if_exists(NONEMPTYFILE);
remove_file_if_exists(NONEMPTYFILE_NONLEND);
// do nothing
return 0; // success
}
static int teardown(void)
{
// do nothing
return 0; // success
}
// tests
static void test_remove_file_that_exists(void)
{
// ** arrange **
// create a file
FILE *file = fopen(OUTFILE, "w");
CU_ASSERT_PTR_NOT_NULL(file);
CU_ASSERT_EQUAL(fclose(file), 0);
errno = 0;
// ** act **
remove_file_if_exists(OUTFILE);
// ** assert **
// make sure the file is removed
CU_ASSERT_EQUAL(errno, 0);
file = fopen(OUTFILE, "r");
CU_ASSERT_TRUE(!file && errno == ENOENT);
// cleanup gracefully
if (file) CU_ASSERT_EQUAL(fclose(file), 0);
errno = 0;
}
static void test_remove_file_that_does_not_exist(void)
{
// ** arrange **
remove_file_if_exists(OUTFILE);
// the file is now supposed to not exist any more --> see test_remove_file_that_exists test result
// ** act **
// call with a not existing file
remove_file_if_exists(OUTFILE);
// must not fail in any internal assertion
// ** assert **
// make sure the file is removed
CU_ASSERT_EQUAL(errno, 0);
FILE *file = fopen(OUTFILE, "r");
CU_ASSERT_TRUE(!file && errno == ENOENT);
// cleanup gracefully
if (file) CU_ASSERT_EQUAL(fclose(file), 0);
errno = 0;
}
static void test_assert_lines_empty_file(void)
{
// ** arrange **
// empty file
remove_file_if_exists(EMPTYFILE);
FILE *file = fopen(EMPTYFILE, "w");
CU_ASSERT_PTR_NOT_NULL_FATAL(file);
CU_ASSERT_EQUAL(fclose(file), 0);
const char *lines[] = {};
// ** act **
assert_lines(EMPTYFILE, lines, sizeof(lines)/sizeof(*lines));
// ** assert **
// no assertions should have happened within assert_lines(...)
}
static void test_assert_lines_non_empty_file(void)
{
// ** arrange **
// reference file
remove_file_if_exists(NONEMPTYFILE);
FILE *file = fopen(NONEMPTYFILE, "w");
CU_ASSERT_PTR_NOT_NULL_FATAL(file);
CU_ASSERT_EQUAL(fprintf(file, "LINE1\n"), 6);
CU_ASSERT_EQUAL(fprintf(file, "LINE2\n"), 6);
CU_ASSERT_EQUAL(fclose(file), 0);
const char *lines[] = { "LINE1\n", "LINE2\n"};
// ** act **
assert_lines(NONEMPTYFILE, lines, sizeof(lines)/sizeof(*lines));
// ** assert **
// no assertions should have happened within assert_lines(...)
}
static void test_assert_lines_no_newline_at_the_end(void)
{
// ** arrange **
// reference file
remove_file_if_exists(NONEMPTYFILE_NONLEND);
FILE *file = fopen(NONEMPTYFILE_NONLEND, "w");
CU_ASSERT_PTR_NOT_NULL_FATAL(file);
CU_ASSERT_EQUAL(fprintf(file, "LINE1\n"), 6);
CU_ASSERT_EQUAL(fprintf(file, "LINE2"), 5);
CU_ASSERT_EQUAL(fclose(file), 0);
const char *lines[] = { "LINE1\n", "LINE2"};
// ** act **
assert_lines(NONEMPTYFILE_NONLEND, lines, sizeof(lines)/sizeof(*lines));
// ** assert **
// no assertions should have happened within assert_lines(...)
}
/**
* @brief Registers and runs the tests.
*/
int main(void)
{
TestMainBasic("PROGC Test Lib", setup, teardown
, test_remove_file_that_exists
, test_remove_file_that_does_not_exist
, test_assert_lines_empty_file
, test_assert_lines_non_empty_file
, test_assert_lines_no_newline_at_the_end
);
}