[Qemu-devel] [PATCH v4 2/4] qtest: introduce qmp_exec_hmp_cmd()

[Amos Kong <akong@redhat.com>]

This patch wraps a helper function to execute human command by
one QMP command (human-monitor-command). It also checks the return
string.

Signed-off-by: Amos Kong <akong@redhat.com>
---
 tests/libqtest.c | 26 ++++++++++++++++++++++++++
 tests/libqtest.h |  9 +++++++++
 2 files changed, 35 insertions(+)

diff --git a/tests/libqtest.c b/tests/libqtest.c
index 71468ac..90babc9 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -646,3 +646,29 @@ void qmp_discard_response(const char *fmt, ...)
     qtest_qmpv_discard_response(global_qtest, fmt, ap);
     va_end(ap);
 }
+
+void qmp_exec_hmp_cmd(const char *expected_ret, const char *fmt, ...)
+{
+    va_list ap;
+    char cmd[1024];
+    char *escaped_cmd;
+    QDict *response;
+    const char *response_return;
+
+    va_start(ap, fmt);
+    vsprintf(cmd, fmt, ap);
+    va_end(ap);
+
+    escaped_cmd = g_strescape(cmd, NULL);
+    response = qmp("{\"execute\": \"human-monitor-command\","
+                   " \"arguments\": {"
+                   "   \"command-line\": \"%s\""
+                   "}}", escaped_cmd);
+    g_free(escaped_cmd);
+
+    g_assert(response);
+    response_return = qdict_get_try_str(response, "return");
+    g_assert(response_return);
+    g_assert_cmpstr(response_return, ==, expected_ret);
+    QDECREF(response);
+}
diff --git a/tests/libqtest.h b/tests/libqtest.h
index 8f323c7..d2959d3 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -375,6 +375,15 @@ QDict *qmp(const char *fmt, ...);
 void qmp_discard_response(const char *fmt, ...);
 
 /**
+ * qmp_exec_hmp_cmd:
+ * @expected_ret: expected return string
+ * @fmt...: HMP command to execute
+ *
+ * Executes HMP command by 'human-monitor-command'.
+ */
+void qmp_exec_hmp_cmd(const char *expected_ret, const char *fmt, ...);
+
+/**
  * qmp_receive:
  *
  * Reads a QMP message from QEMU and returns the response.
-- 
1.9.3