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+# How the test driver works
+
+## Unittest
+- There are two kinds of unittest:
+    - Kernel ACL
+    - Runtime
+- Related file : `run_unittest.sh`
+- Usage :
+```
+$ ./tests/scripts/test_driver.sh \
+    --artifactpath=. \
+    --unittest
+```
+- The `run_unittest.sh` usage :
+
+```
+$ LD_LIBRARY_PATH=Product/out/lib \
+    ./tests/scripts/run_unittest.sh \
+    --reportdir=report \
+    --unittestdir=Product/out/unittest
+```
+
+### Kernel ACL Unittest
+- Test whether the various operations are performed successfully and whether the output and the expected value are the same.
+- TC location : `libs/kernel/acl/src/`
+
+### Runtime Unittest
+- Test whether the expected value and the actual output value are the same when the model is configured, compiled and executed.
+- TC location : `runtimes/tests/neural_networks_test/`
+
+## Framework test
+- Execute the **tflite model** using the given **driver**.
+- There is a TC directory for each model, and a `config.sh` file exists in each TC directory.
+- When `run_test.sh`, refer to the **tflite model** information in `config.sh`, download the file, and run the **tflite model** with the given **driver**.
+- Related files : `run_test.sh` and `run_frameworktest.sh`
+- TC location :
+    - `tests/framework/tests/` : Config directory for TC
+    - `tests/framework/cache/` : TC (Downloaded tflite model files)
+
+### Run tflite_run with various tflite models
+- Driver : `tflite_run`
+- Driver source location : `tools/tflite_run/`
+- Usage :
+```
+$ ./tests/scripts/test_driver.sh \
+    --artifactpath=. \
+    --frameworktest
+```
+- Related pages : [tflite_run](https://github.sec.samsung.net/STAR/nnfw/tree/master/tools/tflite_run)
+
+### Run nnapi_test with various tflite models
+- `nnapi_test` runs tflite in two ways and compares the result:
+    1. tflite interpreter
+    2. `libneuralnetworks.so`, which could be PureACL or NNAPI depending on `--ldlibrarypath`(`LD_LIBRARY_PATH`)
+- Driver : `nnapi_test`
+- Driver source location : `tools/nnapi_test/`
+- Usage :
+```
+$ ./tests/scripts/test_driver.sh \
+    --artifactpath=. \
+    --verification .
+```
+