Opensource ML embedded evaluation kit

Change-Id: I12e807f19f5cacad7cef82572b6dd48252fd61fd
diff --git a/tests/use_case/asr/OutputDecodeTests.cc b/tests/use_case/asr/OutputDecodeTests.cc
new file mode 100644
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+++ b/tests/use_case/asr/OutputDecodeTests.cc
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+/*
+ * Copyright (c) 2021 Arm Limited. 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
+ *
+ *     http://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.
+ */
+#include "OutputDecode.hpp"
+
+#include "catch.hpp"
+
+TEST_CASE("Running output decode on test vector") {
+
+    std::vector<arm::app::ClassificationResult> vecResult(20);
+    /* Number of test inputs. */
+    const size_t numStrings = 8; 
+    
+    /* The test inputs. */
+    std::string testText[numStrings][20] 
+    {
+        {"a", "b", "c", "d", "e", "f", "g", "g", "g", " ", "h", "h", "i", " ", " ", "j", "k", "\'", "\'", "l"},  /* initial */
+        {" ", "b", "c", "d", "e", "f", "g", "g", "g", " ", "h", "h", "i", " ", " ", "j", "k", "\'", "\'", " "},  /* space start and end */
+        {"\'", "b", "c", "d", "e", "f", "g", "g", "g", " ", "h", "h", "i", " ", " ", "j", "k", "\'", "l", "\'"}, /* apostrophe start and end */
+        {"a", "a", "c", "d", "e", "f", "g", "g", "g", " ", "h", "h", "i", " ", " ", "j", "k", "\'", "l", "l"},   /* Double start and end */
+        {"a", "b", "c", "d", "e", "f", "g", "g", "o", "$", "o", "h", "i", " ", " ", "j", "k", "\'", "\'", "l"},  /* Legit double character */
+        {"a", "$", "a", "d", "e", "f", "g", "g", "o", "$", "o", "h", "i", " ", " ", "j", "k", "l", "$", "l"},    /* Legit double character start and end */
+        {"$", "a", "b", "d", "e", "f", "g", "g", "o", "$", "o", "h", "i", " ", " ", "j", "k", "l", "$", "$"},    /* $$ */
+        {"$", "a", "b", "d", "e", "f", "g", "g", "o", "$", "o", "h", "i", " ", " ", "j", "k", "l", "l", "l"}
+    };
+
+    /* The golden outputs for the above test inputs. */
+    std::string expectedOutput[numStrings] =
+    {
+        {"abcdefg hi jk\'l"},
+        {" bcdefg hi jk\' "},
+        {"\'bcdefg hi jk\'l\'"},
+        {"acdefg hi jk\'l"},
+        {"abcdefgoohi jk\'l"},
+        {"aadefgoohi jkll"},
+        {"abdefgoohi jkl"},
+        {"abdefgoohi jkl"}
+    };
+
+    /*For each test input. */
+    for (size_t h = 0; h < numStrings; ++h)
+    {
+        /* Generate fake vecResults.m_label to mimic AsrClassifier output containing the testText. */
+        for (size_t i = 0; i < 20; i++)
+        {
+            vecResult[i].m_label = testText[h][i];
+        }
+        /* Call function with fake vecResults and save returned string into 'buff'. */
+        std::string buff = arm::app::audio::asr::DecodeOutput(vecResult); 
+
+        /* Check that the string returned from the function matches the expected output given above. */
+        REQUIRE(buff.compare(expectedOutput[h]) == 0); 
+    }
+}
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