fix: Fail step when assertion does not pass (#55)

.github/workflows/tests-integration.yml

@@ -287,3 +287,27 @@ jobs:
             compared Goodbye, World! to Hello, World!
             compared Hello, World! to Hello, World!
           actual: "${{ steps.multiple-failed.outputs.message }}"
+  test-step-fails:
+    runs-on: ubuntu-latest
+    needs:
+      - upload-dist
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/download-artifact@v2
+        with:
+          name: dist
+          path: ${{ env.dist-path }}
+      - name: Expect two different values not to pass an equality test
+        id: failed
+        uses: ./
+        continue-on-error: true
+        with:
+          assertion: local://.github/workflows/assertions/is-equal
+          actual: "Bye bye!"
+          expected: "Goodbye, World!"
+      - name: Test step fails when assertion does not pass
+        uses: ./
+        with:
+          assertion: npm://@assertions/is-equal:v1
+          expected: "failure"
+          actual: "${{ steps.failed.outcome }}"

src/main.ts

@@ -51,18 +51,22 @@ async function run(): Promise<void> {
       }
     })
 
-    const results: Result[] = executeTests(tests);
+    const results: Result[] = executeTests(tests)
 
     results.forEach(result => {
       core.info(`${result.pass ? `✅` : `❌`} ${result.message}`)
     })
 
     const aggregateResult: AggregateResult = new AggregateResult(results)
 
+    if (!aggregateResult.pass) {
+      core.setFailed(aggregateResult.message)
+    }
+
     core.setOutput('message', aggregateResult.message)
     core.setOutput('pass', aggregateResult.pass.toString())
     core.setOutput('passed', aggregateResult.pass.toString())
-    core.setOutput('failed', (! aggregateResult.pass).toString())
+    core.setOutput('failed', (!aggregateResult.pass).toString())
   } catch (error) {
     core.setFailed(error.message)
   }