Implement test runner in C

lcthw-remnants-2/c-skeleton/.gitignore

@@ -1 +1,2 @@
+tests/runtests
 tests/your_library_tests

lcthw-remnants-2/c-skeleton/Makefile

@@ -34,8 +34,8 @@ build:
 # The Unit Tests
 .PHONY: tests
 tests: LDLIBS += -static -l$(LIBNAME)
-tests: $(TESTS)
-	sh ./tests/runtests.sh
+tests: ./tests/runtests $(TESTS)
+	./tests/runtests
 
 valgrind:
 	VALGRIND="valgrind --log-file=/tmp/valgrind-%p.log" $(MAKE)
@@ -43,7 +43,7 @@ valgrind:
 # The Cleaner
 clean:
 	rm -rf build $(OBJECTS) $(TESTS)
-	rm -f tests/tests.log
+	rm -f tests/tests.log tests/runtests
 	find . -name "*.gc*" -exec rm {} \;
 	rm -rf `find . -name "*.dSYM" -print`
 

lcthw-remnants-2/c-skeleton/tests/runtests.c

@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <fnmatch.h>
+#include <dbg.h>
+
+int test_selector(const struct dirent *ep)
+{
+  return fnmatch("*_tests", ep->d_name, 0) == 0;
+}
+
+int run_tests_file(char *filename)
+{
+  if(access(filename, R_OK | X_OK) == 0) {
+    return system(filename);
+  }
+
+  return -1;
+}
+
+int main(int argc, char *argv[])
+{
+  int entcount = 0;
+  int rc = 0;
+  int i = 0;
+  int ntests = 0;
+  char *testsdir = getenv("TESTS");
+  char *valgrind = getenv("VALGRIND");
+  struct dirent **namelist = NULL;
+  struct dirent *ep = NULL;
+
+  if(!testsdir) {
+    testsdir = "./tests";
+  }
+
+  entcount = scandir((const char *)testsdir, &namelist, test_selector, alphasort);
+  check(entcount > -1, "Failed to scan tests dir");
+
+  for(i = 0; i < entcount; i++) {
+    ep = namelist[i];
+    check(ep, "Dirent is missing.");
+
+    char filename[256];
+    rc = sprintf(filename, "%s/%s", testsdir, ep->d_name);
+    check(rc > -1, "Failed to build filename.");
+    debug("Found filename '%s'", filename);
+
+    free(ep);
+
+    if(valgrind) {
+      char command[1024];
+      rc = sprintf(command, "%s %s", valgrind, filename);
+      check(rc > -1, "Failed to build command with valgrind.");
+      rc = run_tests_file(command);
+    } else {
+      rc = run_tests_file(filename);
+    }
+
+    if(rc > 0) {
+      debug("Skipping '%s'", filename);
+      continue;
+    }
+
+    ntests++;
+
+    if(rc == 0) {
+      printf("%s PASS\n", filename);
+      continue;
+    }
+
+    printf("ERROR in test %s: here's tests/tests.log\n", filename);
+    printf("------\n");
+    system("tail tests/tests.log");
+    goto error;
+  }
+
+  printf("------\n");
+  printf("Total of %d test files run.\n", ntests);
+
+  if(namelist) {
+    free(namelist);
+  }
+
+  return 0;
+
+error:
+  if(namelist) {
+    free(namelist);
+  }
+
+  return 1;
+}

lcthw-remnants-2/c-skeleton/tests/runtests.sh

@@ -1,19 +0,0 @@
-echo "Running unit tests:"
-
-for i in tests/*_tests
-do
-  if test -f $i
-  then
-    if $VALGRIND ./$i 2>> tests/tests.log
-    then
-      echo $i PASS
-    else
-      echo "ERROR in test $i: here's tests/tests.log"
-      echo "------"
-      tail tests/tests.log
-      exit 1
-    fi
-  fi
-done
-
-echo ""