[vte] all: Add test mode

[Christian Persch <chpe src gnome org>]

commit bac521b55ec8df9de486c318094fa3d016b7ec8a
Author: Christian Persch <chpe src gnome org>
Date:   Sun Mar 4 23:22:26 2018 +0100

    all: Add test mode
    
    Add a way to enable test mode, which will activate functions
    that are normally not enabled (for whatever reason).
    
    Add --test-mode to the vteapp to activate test mode. This
    will later be used in automatic tests.

 src/app/app.cc     |   12 +++++++++++-
 src/vte.cc         |   17 +++++++++++++----
 src/vtegtk.cc      |    7 +++++++
 src/vteinternal.hh |    5 ++++-
 4 files changed, 35 insertions(+), 6 deletions(-)
---
diff --git a/src/app/app.cc b/src/app/app.cc
index 695de98..854ccbe 100644
--- a/src/app/app.cc
+++ b/src/app/app.cc
@@ -56,6 +56,7 @@ public:
         gboolean no_shell{false};
         gboolean object_notifications{false};
         gboolean reverse{false};
+        gboolean test_mode{false};
         gboolean use_gregex{false};
         gboolean version{false};
         gboolean whole_window_transparent{false};
@@ -433,7 +434,10 @@ public:
                           &dummy_bool, nullptr, nullptr },
                         { "shell", 'S', G_OPTION_FLAG_REVERSE | G_OPTION_FLAG_HIDDEN,
                           G_OPTION_ARG_NONE, &no_shell, nullptr, nullptr },
-
+#ifdef VTE_DEBUG
+                        { "test-mode", 0, 0, G_OPTION_ARG_NONE, &test_mode,
+                          "Enable test mode", nullptr },
+#endif
                         { nullptr }
                 };
 
@@ -2105,6 +2109,12 @@ main(int argc,
 
        if (options.debug)
                gdk_window_set_debug_updates(true);
+#ifdef VTE_DEBUG
+       if (options.test_mode) {
+               g_setenv("VTE_TEST", "1", true);
+               options.allow_window_ops = true;
+       }
+#endif
 
        auto app = vteapp_application_new();
        auto rv = g_application_run(app, 0, nullptr);
diff --git a/src/vte.cc b/src/vte.cc
index 8a4809a..47fc4c1 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -4090,7 +4090,8 @@ out:
  */
 void
 VteTerminalPrivate::feed(char const* data,
-                         gssize length)
+                         gssize length,
+                         bool start_processing_)
 {
         g_assert(length == 0 || data != nullptr);
 
@@ -4122,7 +4123,8 @@ VteTerminalPrivate::feed(char const* data,
                        feed_chunks(chunk);
                } while (1);
 
-               start_processing();
+                if (start_processing_)
+                        start_processing();
        }
 }
 
@@ -8284,13 +8286,20 @@ VteTerminalPrivate::VteTerminalPrivate(VteTerminal *t) :
         m_padding = default_padding;
         update_view_extents();
 
+#ifdef VTE_DEBUG
+        if (g_test_mode) {
+                static char const warning[] = "\e[1m\e[31mWARNING:\e[39m Test mode enabled.\e[0m\n\e[G";
+                feed(warning, strlen(warning), false);
+        }
+#endif
+
 #ifndef WITH_GNUTLS
 {
         char buf[1024];
-        auto len = g_snprintf(buf, sizeof(buf), "\e[1m\e[31m%s:\e[39m %s\e[0m\n",
+        auto len = g_snprintf(buf, sizeof(buf), "\e[1m\e[31m%s:\e[39m %s\e[0m\n\e[G",
                               _("WARNING"),
                               _("GNUTLS not enabled; data will be written to disk unencrypted!"));
-        feed(buf, len);
+        feed(buf, len, false);
  }
 #endif
 }
diff --git a/src/vtegtk.cc b/src/vtegtk.cc
index 261d2da..516e042 100644
--- a/src/vtegtk.cc
+++ b/src/vtegtk.cc
@@ -89,6 +89,7 @@ G_DEFINE_TYPE_WITH_CODE(VteTerminal, vte_terminal, GTK_TYPE_WIDGET,
 guint signals[LAST_SIGNAL];
 GParamSpec *pspecs[LAST_PROP];
 GTimer *process_timer;
+bool g_test_mode = false;
 
 static bool
 valid_color(GdkRGBA const* color)
@@ -649,6 +650,12 @@ vte_terminal_class_init(VteTerminalClass *klass)
                                  "  =  vte_terminal_paint\n"
                                  "  ]} end update_timeout\n"
                                  "  >  end process_timeout\n");
+
+                char const* test_env = g_getenv("VTE_TEST");
+                if (test_env != nullptr) {
+                        g_test_mode = g_str_equal(test_env, "1");
+                        g_unsetenv("VTE_TEST");
+                }
        }
 #endif
 
diff --git a/src/vteinternal.hh b/src/vteinternal.hh
index ba8bd10..a58a005 100644
--- a/src/vteinternal.hh
+++ b/src/vteinternal.hh
@@ -958,7 +958,8 @@ public:
                    bool from_api = false);
 
         void feed(char const* data,
-                  gssize length);
+                  gssize length,
+                  bool start_processsing_ = true);
         void feed_child(char const *text,
                         gssize length);
         void feed_child_binary(guint8 const* data,
@@ -1382,3 +1383,5 @@ _vte_double_equal(double a,
         return a == b;
 #pragma GCC diagnostic pop
 }
+
+extern bool g_test_mode;