test fix release branch api check (#12977)

* test fix release branch api check

* fix reviews > 30

* check approval after test, check api diff before test

paddle/scripts/paddle_build.sh

@@ -335,12 +335,18 @@ function assert_api_not_changed() {
     fi
     python ${PADDLE_ROOT}/tools/diff_api.py ${PADDLE_ROOT}/paddle/fluid/API.spec new.spec
     deactivate
+}
+
+function assert_api_spec_approvals() {
+    if [ -z ${BRANCH} ]; then
+        BRANCH="develop"
+    fi
 
-    API_CHANGE=`git diff --name-only upstream/develop | grep "paddle/fluid/API.spec" || true`
+    API_CHANGE=`git diff --name-only upstream/$BRANCH | grep "paddle/fluid/API.spec" || true`
     echo "checking API.spec change, PR: ${GIT_PR_ID}, changes: ${API_CHANGE}"
     if [ ${API_CHANGE} ] && [ "${GIT_PR_ID}" != "" ]; then
-        # TODO: curl -H 'Authorization: token ${TOKEN}'
-        APPROVALS=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews | \
+        # NOTE: per_page=10000 should be ok for all cases, a PR review > 10000 is not human readable.
+        APPROVALS=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/Paddle/pulls/${GIT_PR_ID}/reviews?per_page=10000 | \
         python ${PADDLE_ROOT}/tools/check_pr_approval.py 2 7845005 2887803 728699 13348433`
         echo "current pr ${GIT_PR_ID} got approvals: ${APPROVALS}"
         if [ "${APPROVALS}" == "FALSE" ]; then
@@ -622,11 +628,12 @@ function main() {
       cicheck)
         cmake_gen ${PYTHON_ABI:-""}
         build
+        assert_api_not_changed ${PYTHON_ABI:-""}
         run_test
         gen_capi_package
         gen_fluid_inference_lib
         test_fluid_inference_lib
-        assert_api_not_changed ${PYTHON_ABI:-""}
+        assert_api_spec_approvals
         ;;
       *)
         print_usage