[PATCH i-g-t 13/39] lib/vkms: Test encoder default files

[José Expósito]

Add a helper to create a encoder and a test checking that the default
files and directories are created.

Signed-off-by: José Expósito <jose.exposito89 at gmail.com>
---
 lib/igt_vkms.c             | 12 ++++++++++++
 lib/igt_vkms.h             |  2 ++
 tests/vkms/vkms_configfs.c | 29 +++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/lib/igt_vkms.c b/lib/igt_vkms.c
index d881a2417..299891377 100644
--- a/lib/igt_vkms.c
+++ b/lib/igt_vkms.c
@@ -416,3 +416,15 @@ void igt_vkms_crtc_set_writeback_enabled(igt_vkms_t *dev, const char *name,
 
 	write_bool(path, writeback);
 }
+
+/**
+ * igt_vkms_device_add_encoder:
+ * @dev: Device to add the encoder to
+ * @name: Encoder name
+ *
+ * Add a new encoder to the VKMS device.
+ */
+void igt_vkms_device_add_encoder(igt_vkms_t *dev, const char *name)
+{
+	add_pipeline_item(dev, VKMS_PIPELINE_ITEM_ENCODER, name);
+}
diff --git a/lib/igt_vkms.h b/lib/igt_vkms.h
index cb0278544..b4b048c6d 100644
--- a/lib/igt_vkms.h
+++ b/lib/igt_vkms.h
@@ -38,4 +38,6 @@ bool igt_vkms_crtc_is_writeback_enabled(igt_vkms_t *dev, const char *name);
 void igt_vkms_crtc_set_writeback_enabled(igt_vkms_t *dev, const char *name,
 					 bool writeback);
 
+void igt_vkms_device_add_encoder(igt_vkms_t *dev, const char *name);
+
 #endif /* __IGT_VKMS_H__ */
diff --git a/tests/vkms/vkms_configfs.c b/tests/vkms/vkms_configfs.c
index af42e364d..753ea2d85 100644
--- a/tests/vkms/vkms_configfs.c
+++ b/tests/vkms/vkms_configfs.c
@@ -345,6 +345,34 @@ static void test_crtc_wrong_values(void)
 	igt_vkms_device_destroy(dev);
 }
 
+/**
+ * SUBTEST: encoder-default-files
+ * Description: Test that creating a encoder creates the default files and
+ *              directories.
+ */
+
+static void test_encoder_default_files(void)
+{
+	igt_vkms_t *dev;
+	char path[PATH_MAX];
+
+	const char *dirs[] = {
+		"possible_crtcs",
+	};
+
+	dev = igt_vkms_device_create(__func__);
+	igt_assert(dev);
+
+	igt_vkms_device_add_encoder(dev, "encoder0");
+
+	snprintf(path, sizeof(path), "%s/encoders/encoder0", dev->path);
+	assert_default_files(path,
+			     NULL, 0,
+			     dirs, ARRAY_SIZE(dirs));
+
+	igt_vkms_device_destroy(dev);
+}
+
 igt_main
 {
 	struct {
@@ -360,6 +388,7 @@ igt_main
 		{ "crtc-default-files", test_crtc_default_files },
 		{ "crtc-default-values", test_crtc_default_values },
 		{ "crtc-wrong-values", test_crtc_wrong_values },
+		{ "encoder-default-files", test_encoder_default_files },
 	};
 
 	igt_fixture {
-- 
2.48.1