IVGCVSW-5571 Expose the TfLite Delegate to the TfLite python API

 * Implemented external delegate adaptor interface for TfLite
 * Activated armnn logging for delegate
 * Added logging info to indicate if gpu tuning is turned on
 * Added pytests to ensure functionality of the external delegate adaptor
 * Included the delegate directory into doxygen
 * Added documentation on how to use the external delegate in python

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: Id3b4588fb0b9ac7e3f47ba2c19feead7beb58e18

1 files changed, 30 insertions, 0 deletions

diff --git a/delegate/python/test/conftest.py b/delegate/python/test/conftest.py
new file mode 100644
index 0000000000..780a0492e1
--- /dev/null
+++ b/delegate/python/test/conftest.py
@@ -0,0 +1,30 @@
+# Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+# SPDX-License-Identifier: MIT
+import pytest
+import os
+
+
+@pytest.fixture(scope="module")
+def test_data_folder(request):
+    """
+    This fixture returns path to the folder with the shared test resources
+    """
+    return str(os.path.join(request.fspath.dirname, "test_data"))
+
+
+def pytest_addoption(parser):
+    """
+    Adds the program option 'delegate-dir' to pytest
+    """
+    parser.addoption("--delegate-dir",
+                     action="append",
+                     help="Directory of the armnn tflite delegate library",
+                     required=True)
+
+
+def pytest_generate_tests(metafunc):
+    """
+    Makes the program option 'delegate-dir' available to all tests as a function fixture
+    """
+    if "delegate_dir" in metafunc.fixturenames:
+        metafunc.parametrize("delegate_dir", metafunc.config.getoption("delegate_dir"))
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