test: add some chardev mux event tests

Check the expected behaviour of qemu_chr_be_event() on a mux chardev.

For some reason, sending the event on the base chardev broadcast to
all frontends, while sending it on the mux chardev itself should
trigger the event on the currently focused chardev frontend.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20171103152824.21948-3-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/tests/test-char.c b/tests/test-char.c
index 7ac25ff..911e3f6 100644 (file)
--- a/tests/test-char.c
+++ b/tests/test-char.c
@@ -5,6 +5,7 @@
 #include "qemu/config-file.h"
 #include "qemu/sockets.h"
 #include "chardev/char-fe.h"
+#include "chardev/char-mux.h"
 #include "sysemu/sysemu.h"
 #include "qapi/error.h"
 #include "qom/qom-qobject.h"
@@ -164,6 +165,7 @@ static void char_mux_test(void)
     FeHandler h1 = { 0, }, h2 = { 0, };
     CharBackend chr_be1, chr_be2;
 
+    muxes_realized = true; /* done after machine init */
     opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
                             1, &error_abort);
     qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
@@ -201,8 +203,23 @@ static void char_mux_test(void)
     g_assert_cmpstr(h2.read_buf, ==, "hello");
     h2.read_count = 0;
 
+    g_assert_cmpint(h1.last_event, !=, 42); /* should be MUX_OUT or OPENED */
+    g_assert_cmpint(h2.last_event, !=, 42); /* should be MUX_IN or OPENED */
+    /* sending event on the base broadcast to all fe, historical reasons? */
+    qemu_chr_be_event(base, 42);
+    g_assert_cmpint(h1.last_event, ==, 42);
+    g_assert_cmpint(h2.last_event, ==, 42);
+    qemu_chr_be_event(chr, -1);
+    g_assert_cmpint(h1.last_event, ==, 42);
+    g_assert_cmpint(h2.last_event, ==, -1);
+
     /* switch focus */
     qemu_chr_be_write(base, (void *)"\1c", 2);
+    g_assert_cmpint(h1.last_event, ==, CHR_EVENT_MUX_IN);
+    g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
+    qemu_chr_be_event(chr, -1);
+    g_assert_cmpint(h1.last_event, ==, -1);
+    g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
 
     qemu_chr_be_write(base, (void *)"hello", 6);
     g_assert_cmpint(h2.read_count, ==, 0);