1 files changed, 16 insertions, 0 deletions
diff --git a/e2e_harness.zig b/e2e_harness.zig
index 8b795705..cd4ffd63 100644
--- a/e2e_harness.zig
+++ b/e2e_harness.zig
@@ -40,6 +40,10 @@ pub const Harness = struct {
     /// when true, print the captured screen state after each pump/waitFor and on
     /// every assertion, so live test runs can be inspected (zig build test -Dtrace).
     trace: bool = false,
+    /// every raw byte the app has emitted (accumulated in pump). Lets tests assert
+    /// on control sequences the emulator consumes and never renders (e.g. OSC 52
+    /// clipboard writes). gpa-owned; freed in deinit.
+    raw: std.ArrayList(u8) = .empty,
 
     pub fn init(gpa: std.mem.Allocator, exe: [*:0]const u8, rows: u16, cols: u16) !Harness {
         return initArgs(gpa, exe, rows, cols, null);
@@ -81,6 +85,7 @@ pub const Harness = struct {
         posix.kill(self.pid, posix.SIG.KILL) catch {};
         _ = linux.close(self.master);
         self.stream.deinit();
+        self.raw.deinit(self.gpa);
         self.term.deinit(self.gpa);
         self.gpa.destroy(self.term);
     }
@@ -110,6 +115,7 @@ pub const Harness = struct {
             if ((fds[0].revents & posix.POLL.IN) != 0) {
                 const n = posix.read(self.master, &buf) catch break;
                 if (n == 0) break;
+                self.raw.appendSlice(self.gpa, buf[0..n]) catch {};
                 self.stream.nextSlice(buf[0..n]);
             }
         }
@@ -159,6 +165,7 @@ pub const Harness = struct {
             if ((fds[0].revents & posix.POLL.IN) != 0) {
                 const n = posix.read(self.master, &buf) catch break;
                 if (n == 0) break;
+                self.raw.appendSlice(self.gpa, buf[0..n]) catch {};
                 self.stream.nextSlice(buf[0..n]);
             }
             const text = try self.screenText();
@@ -234,6 +241,15 @@ pub const Harness = struct {
             return error.ExpectFailed;
         }
     }
+
+    /// Assert a byte sequence appears anywhere in the app's raw output so far.
+    /// For control sequences the emulator swallows and never renders (OSC 52 etc.).
+    pub fn expectRawContains(self: *Harness, needle: []const u8, msg: []const u8) !void {
+        if (std.mem.indexOf(u8, self.raw.items, needle) == null) {
+            std.debug.print("E2E FAIL: {s}\n(raw output has no {any})\n", .{ msg, needle });
+            return error.ExpectFailed;
+        }
+    }
 };
 
 /// Write a file (helper for test setup, raw linux syscalls).