Add template

template_test.c

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+tmp_out="$(mktemp)"
+
+if [ -f "${0%_test.c}.c" ]; then
+	SRC="${0%_test.c}.c"
+else
+	SRC="$($(type -P basename) -- "${0%_test.c}.c")"
+fi
+grep -A9999 -- "[S]TART_OF_C_FILE" "${0}" | cc -Wall -Wextra -Werror -o "${tmp_out}" -xc "${SRC}" -
+
+if [ ! "${?}" = "0" ] || [ ! -f "${tmp_out}" ]; then
+  printf "\e[101;37m%s\e[m\n" "Could not compile"
+  exit 1
+fi
+
+diff --expand-tabs --left-column --width="60" --side-by-side --label="Expected Output" --label="    Test Output" -- <("${tmp_out}" 2>&1 1>/dev/null) <("${tmp_out}" 2>/dev/null) && { printf "\e[102;30m%s\e[m\n" "All tests passed"; exit_status="0"; } || { printf "\e[101;37m%s\e[m\n" "At least one test failed"; exit_status="1"; }
+rm -f -- "${tmp_out}"
+
+exit -- "${exit_status}"
+// START_OF_C_FILE
+#include <stdio.h>
+#include <unistd.h>
+
+#define test(out_prefix, expected_string, func, ...) \
+    do { \
+        fprintf(stderr, "Case:%s:%s", out_prefix, expected_string); \
+        fflush(stderr); \
+        int old_stderr_fd = dup(2); \
+        dup2(1, 2); \
+        fprintf(stdout, "Case:%s:", out_prefix); \
+        fflush(stdout); \
+        func(__VA_ARGS__); \
+        fflush(stdout); \
+        dup2(old_stderr_fd, 2); \
+    } while(0)
+
+int main(){
+  test("dummy", "true\n", printf, "%s\n", "true");
+  return 0;
+}