test: Run all the fpi-device tests with the dynamically loaded TOD driver

We can ensure better that it works as expected repeating all the device
tests for it too.

The nice part is that we can just do this by re-defininig its GType as
the gtype of the loaded driver.

tests/meson.build

@@ -229,11 +229,14 @@ if get_option('tod')
     tod_unit_tests = [
         'fp-context-tod',
         'fp-device-tod',
+        'fpi-device',
     ]
 
     foreach test_name: tod_unit_tests
         basename = 'test-' + test_name
-        test_exe = executable(basename,
+        sufix = test_name.endswith('-tod') ? '' : '-tod'
+        test_name = test_name + sufix
+        test_exe = executable(basename + sufix,
             sources: basename + '.c',
             dependencies: libfprint_private_dep,
             c_args: [

tests/test-fpi-device.c

@@ -26,6 +26,26 @@
 #include "fpi-log.h"
 #include "test-device-fake.h"
 
+#ifdef TEST_TOD_DRIVER
+
+#include "test-utils-tod.h"
+
+#undef FPI_TYPE_DEVICE_FAKE
+#define FPI_TYPE_DEVICE_FAKE (fpt_context_device_driver_get_type ())
+
+#undef FPI_DEVICE_FAKE
+#define FPI_DEVICE_FAKE(dev) (G_TYPE_CHECK_INSTANCE_CAST ((dev), FPI_TYPE_DEVICE_FAKE, FpiDeviceFake))
+
+static GType
+fpt_context_device_driver_get_type (void)
+{
+  FptContext *tctx = fpt_context_fake_dev_default ();
+
+  return G_TYPE_FROM_CLASS (FP_DEVICE_GET_CLASS (tctx->device));
+}
+
+#endif
+
 /* Utility functions */
 
 typedef FpDevice FpAutoCloseDevice;
@@ -2343,6 +2363,10 @@ test_driver_retry_error_types (void)
 int
 main (int argc, char *argv[])
 {
+#ifdef TEST_TOD_DRIVER
+  g_autoptr(FptContext) tctx = fpt_context_fake_dev_default ();
+#endif
+
   g_test_init (&argc, &argv, NULL);
 
   g_test_add_func ("/driver/get_driver", test_driver_get_driver);

tests/test-utils-tod.c

@@ -21,6 +21,8 @@
 
 #include "test-utils-tod.h"
 
+static FptContext *fake_context = NULL;
+
 FptContext *
 fpt_context_new_with_fake_dev (void)
 {
@@ -50,3 +52,13 @@ fpt_context_new_with_fake_dev (void)
 
   return tctx;
 }
+
+FptContext *
+fpt_context_fake_dev_default (void)
+{
+  if (fake_context)
+    return fake_context;
+
+  fake_context = fpt_context_new_with_fake_dev ();
+  return fake_context;
+}

tests/test-utils-tod.h

@@ -21,3 +21,5 @@
 #include "test-utils.h"
 
 FptContext * fpt_context_new_with_fake_dev (void);
+
+FptContext * fpt_context_fake_dev_default (void);