Add unit tests for indentation mode cmdline parsing

src/cmdline.c

@@ -303,7 +303,7 @@ static int indentation_mode(opt_t *result, char *optarg)
         result->indentmode = 'n';
     }
     else {
-        fprintf(stderr, "%s: invalid indentation mode\n", PROJECT);
+        bx_fprintf(stderr, "%s: invalid indentation mode\n", PROJECT);
         return 1;
     }
     return 0;
@@ -611,7 +611,17 @@ static void print_debug_info(opt_t *result)
 
 opt_t *process_commandline(int argc, char *argv[])
 {
+    #ifdef DEBUG
+        fprintf(stderr, "argc = %d\n", argc);
+        fprintf(stderr, "argv = [");
+        for(int i=0; i<=argc; i++) {
+            fprintf(stderr, "%s%s", argv[i], i < argc ? ", " : "");
+        }
+        fprintf(stderr, "]\n");
+    #endif
+
     opt_t *result = create_new_opt();
+    optind = 1;   /* ensure that getopt() will process all arguments, even in unit test situations */
 
     /* Intercept '--help' and '-?' cases first, as they are not supported by getopt() */
     if (argc >= 2 && argv[1] != NULL && (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)) {

utest/Makefile

@@ -24,7 +24,7 @@ SRC_DIR    = ../src
 UTEST_DIR  = ../utest
 VPATH      = $(SRC_DIR):$(SRC_DIR)/misc:$(UTEST_DIR)
 
-UTEST_NORM = global_mock.c tools_test.c regulex_test.o main.o
+UTEST_NORM = global_mock.c cmdline_test.c tools_test.c regulex_test.o main.o
 MOCKS = bx_fprintf
 
 .PHONY: check_dir flags_unix flags_win32 flags_ utest
@@ -72,6 +72,7 @@ unittest.exe: $(UTEST_OBJ) | check_dir
 
 
 global_mock.o:  global_mock.c global_mock.h boxes.h unicode.h config.h | check_dir
+cmdline_test.o: cmdline_test.c cmdline_test.h global_mock.h boxes.h cmdline.h config.h | check_dir
 tools_test.o:   tools_test.c tools_test.h tools.h config.h | check_dir
 regulex_test.o: regulex_test.c regulex_test.h global_mock.h regulex.h config.h | check_dir
 main.o:         main.c global_mock.h tools_test.h regulex_test.h config.h | check_dir

utest/cmdline_test.c

@@ -0,0 +1,121 @@
+/*
+ * boxes - Command line filter to draw/remove ASCII boxes around text
+ * Copyright (c) 1999-2021 Thomas Jensen and the boxes contributors
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2, as published
+ * by the Free Software Foundation.
+ *
+ * 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.
+ *
+* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ */
+
+/*
+ * Unit tests of the 'cmdline' module
+ */
+
+#include "config.h"
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+#include "boxes.h"
+#include "cmdline.h"
+#include "tools.h"
+#include "global_mock.h"
+#include "cmdline_test.h"
+
+
+static opt_t *act(const int num_args, ...)
+{
+    assert_true(num_args >= 0);
+
+    int argc = 1;
+    char **argv = (char **) calloc(argc + 1, sizeof(char *));
+    argv[0] = "out/boxes";
+
+    if (num_args > 0) {
+        va_list va;
+        va_start(va, num_args);
+        char *arg;
+        while ((arg = va_arg(va, char *))) {
+            ++argc;
+            argv = (char **) realloc(argv, (argc + 1) * sizeof(char *));
+            argv[argc - 1] = arg;
+        }
+        va_end(va);
+    }
+    argv[argc] = NULL;
+
+    opt_t *actual = process_commandline(argc, argv);
+    BFREE(argv);
+    return actual;
+}
+
+
+void test_indentmode_none(void **state)
+{
+    (void) state;  /* unused */
+
+    opt_t *actual = act(2, "-i", "none");
+
+    assert_non_null(actual);
+    assert_int_equal((int) 'n', (int) actual->indentmode);
+}
+
+
+void test_indentmode_invalid_long(void **state)
+{
+    (void) state;  /* unused */
+
+    opt_t *actual = act(2, "-i", "INVALID");
+
+    assert_null(actual);   // invalid option, so we would need to exit with error
+    assert_int_equal(1, collect_err_size);
+    assert_string_equal("boxes: invalid indentation mode\n", collect_err[0]);
+}
+
+
+void test_indentmode_invalid_short(void **state)
+{
+    (void) state;  /* unused */
+
+    opt_t *actual = act(2, "-i", "X");
+
+    assert_null(actual);   // invalid option, so we would need to exit with error
+    assert_int_equal(1, collect_err_size);
+    assert_string_equal("boxes: invalid indentation mode\n", collect_err[0]);
+}
+
+
+void test_indentmode_box(void **state)
+{
+    (void) state;  /* unused */
+
+    opt_t *actual = act(2, "-i", "BO");
+
+    assert_non_null(actual);
+    assert_int_equal((int) 'b', (int) actual->indentmode);
+}
+
+
+void test_indentmode_text(void **state)
+{
+    (void) state;  /* unused */
+
+    opt_t *actual = act(2, "-i", "t");
+
+    assert_non_null(actual);
+    assert_int_equal((int) 't', (int) actual->indentmode);
+}
+
+
+/*EOF*/                                          /* vim: set cindent sw=4: */

utest/cmdline_test.h

@@ -0,0 +1,38 @@
+/*
+ * boxes - Command line filter to draw/remove ASCII boxes around text
+ * Copyright (c) 1999-2021 Thomas Jensen and the boxes contributors
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2, as published
+ * by the Free Software Foundation.
+ *
+ * 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.
+ *
+* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ */
+
+/*
+ * Unit tests of the 'cmdline' module
+ */
+
+#ifndef CMDLINE_TEST_H
+#define CMDLINE_TEST_H
+
+
+void test_indentmode_none(void **state);
+void test_indentmode_invalid_long(void **state);
+void test_indentmode_invalid_short(void **state);
+void test_indentmode_box(void **state);
+void test_indentmode_text(void **state);
+
+
+#endif
+
+/*EOF*/                                          /* vim: set cindent sw=4: */

utest/main.c

@@ -29,6 +29,7 @@
 #include <cmocka.h>
 
 #include "global_mock.h"
+#include "cmdline_test.h"
 #include "tools_test.h"
 #include "regulex_test.h"
 
@@ -46,11 +47,12 @@ int main(void)
 {
     setup_mocks();
 
-    const struct CMUnitTest tools_tests[] = {
-        cmocka_unit_test(test_strisyes_true),
-        cmocka_unit_test(test_strisyes_false),
-        cmocka_unit_test(test_strisno_true),
-        cmocka_unit_test(test_strisno_false)
+    const struct CMUnitTest cmdline_tests[] = {
+        cmocka_unit_test_setup(test_indentmode_none, beforeTest),
+        cmocka_unit_test_setup(test_indentmode_invalid_long, beforeTest),
+        cmocka_unit_test_setup(test_indentmode_invalid_short, beforeTest),
+        cmocka_unit_test_setup(test_indentmode_box, beforeTest),
+        cmocka_unit_test_setup(test_indentmode_text, beforeTest)
     };
 
     const struct CMUnitTest regulex_tests[] = {
@@ -61,9 +63,17 @@ int main(void)
         cmocka_unit_test_setup(test_regex_replace_error, beforeTest)
     };
 
+    const struct CMUnitTest tools_tests[] = {
+        cmocka_unit_test(test_strisyes_true),
+        cmocka_unit_test(test_strisyes_false),
+        cmocka_unit_test(test_strisno_true),
+        cmocka_unit_test(test_strisno_false)
+    };
+
     int num_failed = 0;
-    num_failed += cmocka_run_group_tests(tools_tests, NULL, NULL);
+    num_failed += cmocka_run_group_tests(cmdline_tests, NULL, NULL);
     num_failed += cmocka_run_group_tests(regulex_tests, NULL, NULL);
+    num_failed += cmocka_run_group_tests(tools_tests, NULL, NULL);
 
     teardown();
     return num_failed;