[test] refactor tests with spawn (#3452)

* [test] added spawn decorator

* polish code

* polish code

* polish code

* polish code

* polish code

* polish code

.github/workflows/build_on_pr.yml

@@ -8,10 +8,10 @@ jobs:
   detect:
     name: Detect file change
     if: |
-        github.event.pull_request.draft == false &&
-        github.base_ref == 'main' &&
-        github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI' &&
-        contains( github.event.pull_request.labels.*.name, 'Run Build and Test')
+      github.event.pull_request.draft == false &&
+      github.base_ref == 'main' &&
+      github.event.pull_request.base.repo.full_name == 'hpcaitech/ColossalAI' &&
+      contains( github.event.pull_request.labels.*.name, 'Run Build and Test')
     outputs:
       changedExtenisonFiles: ${{ steps.find-extension-change.outputs.all_changed_files }}
       anyExtensionFileChanged: ${{ steps.find-extension-change.outputs.any_changed }}
@@ -27,10 +27,10 @@ jobs:
       - name: Locate base commit
         id: locate-base-sha
         run: |
-            curBranch=$(git rev-parse --abbrev-ref HEAD)
-            commonCommit=$(git merge-base origin/main $curBranch)
-            echo $commonCommit
-            echo "baseSHA=$commonCommit" >> $GITHUB_OUTPUT
+          curBranch=$(git rev-parse --abbrev-ref HEAD)
+          commonCommit=$(git merge-base origin/main $curBranch)
+          echo $commonCommit
+          echo "baseSHA=$commonCommit" >> $GITHUB_OUTPUT
 
       - name: Find the changed extension-related files
         id: find-extension-change
@@ -63,7 +63,6 @@ jobs:
             echo "$file was changed"
           done
 
-
   build:
     name: Build and Test Colossal-AI
     needs: detect
@@ -124,7 +123,7 @@ jobs:
       - name: Execute Unit Testing
         if: needs.detect.outputs.anyLibraryFileChanged == 'true'
         run: |
-          PYTHONPATH=$PWD pytest --cov=. --cov-report xml tests/
+          CURL_CA_BUNDLE="" PYTHONPATH=$PWD pytest --cov=. --cov-report xml tests/
         env:
           DATA: /data/scratch/cifar-10
           NCCL_SHM_DISABLE: 1