[PATCH i-g-t v2 15/43] lib/vkms: Test encoder default files

["José Expósito" <jose.exposito89@gmail.com>]

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@gmail.com>
---
 lib/igt_vkms.c             | 27 +++++++++++++++++++++++++++
 lib/igt_vkms.h             |  4 ++++
 tests/vkms/vkms_configfs.c | 29 +++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)

diff --git a/lib/igt_vkms.c b/lib/igt_vkms.c
index 0a14f9af7..ed28adf9b 100644
--- a/lib/igt_vkms.c
+++ b/lib/igt_vkms.c
@@ -258,6 +258,21 @@ void igt_vkms_get_crtc_writeback_path(igt_vkms_t *dev, const char *name,
 				    VKMS_FILE_CRTC_WRITEBACK, path, len);
 }
 
+/**
+ * igt_vkms_get_encoder_path:
+ * @dev: Device containing the encoder
+ * @name: Encoder name
+ * @path: Output path
+ * @len: Maximum @path length
+ *
+ * Returns the encoder path.
+ */
+void igt_vkms_get_encoder_path(igt_vkms_t *dev, const char *name, char *path,
+			       size_t len)
+{
+	get_pipeline_item_path(dev, VKMS_PIPELINE_ITEM_ENCODER, name, path, len);
+}
+
 /**
  * igt_vkms_device_create:
  * @name: VKMS device name
@@ -527,3 +542,15 @@ 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 90cfde77a..aa6ff513d 100644
--- a/lib/igt_vkms.h
+++ b/lib/igt_vkms.h
@@ -31,6 +31,8 @@ void igt_vkms_get_crtc_path(igt_vkms_t *dev, const char *name, char *path,
 			    size_t len);
 void igt_vkms_get_crtc_writeback_path(igt_vkms_t *dev, const char *name,
 				      char *path, size_t len);
+void igt_vkms_get_encoder_path(igt_vkms_t *dev, const char *name, char *path,
+			       size_t len);
 
 igt_vkms_t *igt_vkms_device_create(const char *name);
 void igt_vkms_device_destroy(igt_vkms_t *dev);
@@ -48,4 +50,6 @@ 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 860a06f41..8939ef611 100644
--- a/tests/vkms/vkms_configfs.c
+++ b/tests/vkms/vkms_configfs.c
@@ -406,6 +406,34 @@ static void test_crtc_valid_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");
+	igt_vkms_get_encoder_path(dev, "encoder0", path, sizeof(path));
+
+	assert_default_files(path,
+			     NULL, 0,
+			     dirs, ARRAY_SIZE(dirs));
+
+	igt_vkms_device_destroy(dev);
+}
+
 igt_main
 {
 	struct {
@@ -423,6 +451,7 @@ igt_main
 		{ "crtc-default-values", test_crtc_default_values },
 		{ "crtc-wrong-values", test_crtc_wrong_values },
 		{ "crtc-valid-values", test_crtc_valid_values },
+		{ "encoder-default-files", test_encoder_default_files },
 	};
 
 	igt_fixture {
-- 
2.48.1