1 files changed, 44 insertions, 0 deletions
diff --git a/ethosu/vela/test/test_compiler_driver.py b/ethosu/vela/test/test_compiler_driver.py
new file mode 100644
index 00000000..56a90c47
--- /dev/null
+++ b/ethosu/vela/test/test_compiler_driver.py
@@ -0,0 +1,44 @@
+# Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the License); you may
+# not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an AS IS BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Description:
+# Unit tests for compiler driver
+from ethosu.vela.compiler_driver import next_sram_factor
+
+
+def test_next_sram_factor():
+    lower = 0.7
+    assert (1.0, False) == next_sram_factor([])
+    assert (None, False) == next_sram_factor([True])
+    assert (lower, True) == next_sram_factor([False])
+    assert ((1 + lower) / 2, True) == next_sram_factor([False, True])
+    assert (lower / 2, True) == next_sram_factor([False, False])
+    # Tests next_sram_factor for a range of simulated allocator efficiencies
+    for i in range(20):
+        allocator_factor = i / 20.0  # The simulated allocator efficiency
+        alloc_results = []
+        bisected_factor = 0  # The end result of the bisect search
+        while True:
+            factor, dry_test = next_sram_factor(alloc_results)
+            if factor is None:
+                break
+            alloc_result = factor < allocator_factor
+            if alloc_result and not dry_test:
+                bisected_factor = factor
+            alloc_results.append(alloc_result)
+            assert len(alloc_results) < 100
+        assert bisected_factor <= allocator_factor
+        assert abs(bisected_factor - allocator_factor) < 0.02