add files for presentation at next stage2 meeting.

Author: Jan Philipp Hafer

example.zig

@@ -0,0 +1,55 @@
+const std = @import("std");
+
+// PROTOTYPE intended for presentation
+
+const panic_runner = @import("lib/panic_runner.zig");
+test "testme1" {
+    std.debug.assert(true);
+    panic_runner.writeExpectedPanicMsg("test123");
+    @panic("test123");
+}
+test "testme2" {
+    std.debug.assert(true);
+}
+// test "testme4" {
+//     panic_runner.writeExpectedPanicMsg("bruh");
+//     @panic("wrongmsg");
+// }
+
+// test "testme4" {
+//     @panic("no_expected_panic_msg");
+// }
+
+// tradeoffs:
+// + simple and works with current routines
+// - only 1 panic inside a test block and must be last item
+// - requires process spawning and IPC (separates embedded and hosted environments)
+//
+// my opinion:
+// - feels like a hacky workaround (like Kernel spawn APIs I needed to modify)
+// - more elegant solution would be copying complete program state with a
+//   bespoke debugging api + let user define store + load points for programs:
+//   ```
+//   test "testme" {
+//       var i: u32 = 0;
+//       @storeProgramState
+//       panic_runner.writeExpectedPanicMsg("test123");
+//       while (i < 100): (i+=1) {
+//           if (i == 77) {
+//               panic_runner.writeExpectedPanicMsg("test77");
+//               @panic("test123");
+//           }
+//       }
+//       @loadProgramState
+//       i = 100;
+//       @storeProgramState
+//       panic_runner.writeExpectedPanicMsg("test123");
+//       while (i < 200): (i+=1) {
+//           if (i == 177) {
+//               panic_runner.writeExpectedPanicMsg("test177");
+//               @panic("test123");
+//           }
+//       }
+//       @loadProgramState
+//   ```
+

lib/panic_runner.zig

@@ -79,12 +79,12 @@ pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usi
         msg_wr.writeIntNative(usize, global.failed) catch unreachable;
 
         if (std.mem.eql(u8, message, global.buf_panic_msg[0..global.buf_panic_msg_fill])) {
-            std.debug.print("execpted panic\n", .{});
+            // std.debug.print("execpted panic\n", .{});
             msg_wr.writeByte(@intCast(u8, @enumToInt(PanicT.expected_panic))) catch unreachable;
             msg_pipe_file.close(); // workaround process.exit
             std.process.exit(0);
         } else {
-            std.debug.print("unexecpted panic\n", .{});
+            // std.debug.print("unexecpted panic\n", .{});
             msg_wr.writeByte(@intCast(u8, @enumToInt(PanicT.unexpected_panic))) catch unreachable;
             msg_pipe_file.close(); // workaround process.exit
             std.debug.panic("{s}", .{message});
@@ -130,12 +130,12 @@ fn processArgs(static_alloc: std.mem.Allocator) Cli {
 
         cli.state = .Worker;
         cli.test_nr = std.fmt.parseUnsigned(u64, args[1], 10) catch unreachable;
-        std.debug.print("test worker (exe_path test_nr handle: ", .{});
-        std.debug.print("{s} {s} {s}\n", .{ args[0], args[1], args[2] });
+        // std.debug.print("test worker (exe_path test_nr handle: ", .{});
+        // std.debug.print("{s} {s} {s}\n", .{ args[0], args[1], args[2] });
     } else {
         cli.state = .Control;
         cli.test_nr = 0;
-        std.debug.print("test control: {s}\n", .{args[0]});
+        // std.debug.print("test control: {s}\n", .{args[0]});
     }
     cli.test_runner_exe_path = args[0];
     return cli;
@@ -174,7 +174,7 @@ pub fn main() !void {
                     try child_proc.spawn();
                 }
                 const ret_term = try child_proc.wait();
-                std.debug.print("ret_term: {any}\n", .{ret_term.Exited});
+                // std.debug.print("ret_term: {any}\n", .{ret_term.Exited});
                 if (ret_term.Exited != @enumToInt(ChildProcess.Term.Exited)) {
                     @panic("TODO: handle printing message for exit reason.");
                 }
@@ -187,11 +187,11 @@ pub fn main() !void {
                 };
                 const file_rd = file.reader();
                 const ret_passed = try file_rd.readIntNative(usize);
-                std.debug.print("ctrl passed: {d}\n", .{ret_passed});
+                // std.debug.print("ctrl passed: {d}\n", .{ret_passed});
                 const ret_skipped = try file_rd.readIntNative(usize);
-                std.debug.print("ctrl skipped: {d}\n", .{ret_skipped});
+                // std.debug.print("ctrl skipped: {d}\n", .{ret_skipped});
                 const ret_failed = try file_rd.readIntNative(usize);
-                std.debug.print("ctrl fail: {d}\n", .{ret_failed});
+                // std.debug.print("ctrl fail: {d}\n", .{ret_failed});
                 global.passed += ret_passed;
                 global.skipped += ret_skipped;
                 global.failed += ret_failed;

t.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+#set -e
+./rel/bin/zig test --test-runner lib/panic_runner.zig example.zig
+echo "exit status: $?"