fix(reg): Fix regression test CI executing errors

Remove errors related git commands, and `1_run_regression_test.sh` which
would cause no error message showed in CI even unittest failed in
regression test.

Since there is importing issue of mudule `numpy`, we should use module
`statistics` as alternative solution.

tests/regression/0_pull_build.sh → tests/regression/0_build.sh

@@ -1,8 +1,5 @@
 #!/usr/bin/env bash
 
-git fetch origin develop
-git checkout -b pullrequest FETCH_HEAD
-
 make
 
 bazel run //accelerator &

tests/regression/1_close_TA.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+wait $(ps aux | grep '[r]unner.py' | awk '{print $2}')
+kill $(ps aux | grep '[.]/accelerator' | awk '{print $2}')
+wait $!
+
+trap 'exit 0' SIGTERM
+

tests/regression/1_run_TA.sh

@@ -0,0 +1,8 @@
+make
+
+bazel run //accelerator &
+TA_pid=$!
+sleep 20
+
+pip install --user -r tests/regression/requirements.txt
+

tests/regression/requirements.txt

@@ -1,2 +1 @@
-numpy==1.14.2
 requests==2.20.0

tests/regression/runner.py

@@ -4,7 +4,7 @@
 import sys
 import subprocess
 import unittest
-import numpy as np
+import statistics
 import time
 
 if len(sys.argv) == 2:
@@ -23,8 +23,8 @@
 
 
 def eval_stat(time_cost, func_name):
-    avg = np.average(time_cost)
-    var = np.var(time_cost)
+    avg = statistics.mean(time_cost)
+    var = statistics.variance(time_cost)
     print("Average Elapsed Time of " + str(func_name) + ":" + str(avg) +
           " sec")
     print("With the range +- " + str(2 * var) +
@@ -207,3 +207,6 @@ def test_mam_recv_msg(self):
     ]  # 'private' methods start from _
     for method in public_method_names:
         getattr(f, method)()  # call
+
+    if not unittest.TestResult().errors:
+        exit(1)