make it a function

Author: tannewt

.github/workflows/build.yml

@@ -12,6 +12,10 @@ jobs:
   test:
     runs-on: ubuntu-16.04
     steps:
+    - name: Dump GitHub context
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github) }}
+      run: echo "$GITHUB_CONTEXT"
     - name: Set up Python 3.5
       uses: actions/setup-python@v1
       with:
@@ -47,7 +51,7 @@ jobs:
         diff -u $testbase.exp $testbase.out;
         done
       working-directory: tests
-      if: failure
+      if: failure()
     - name: Test threads
       run: MICROPY_CPYTHON3=python3.5 MICROPY_MICROPYTHON=../ports/unix/micropython_coverage ./run-tests -j1 -d thread
       working-directory: tests