Fail on invalid config

.github/workflows/test-empty-setting.yml

@@ -0,0 +1,48 @@
+name: Test non-existent setting
+on:
+  #  # Uncomment when test added first time to register workflow and comment it back after workflow would be registered
+  #  #
+  #  # Added pull_request to register workflow from the PR.
+  #  # Read more https://stackoverflow.com/questions/63362126/github-actions-how-to-run-a-workflow-created-on-a-non-master-branch-from-the-wo
+  # pull_request: {}
+  workflow_dispatch: {}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    outputs:
+      result: ${{ steps.current.outputs.value }}
+      outcome: ${{ steps.current.outcome }}
+    steps:
+      - name: Setup terraform
+        uses: hashicorp/setup-terraform@v2
+      - name: Setup atmos
+        uses: cloudposse/[email protected]
+        with:
+          install-wrapper: false
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - uses: ./
+        id: current
+        with:
+          component: foo
+          stack: core-ue1-dev
+          settings-path: settings.level5
+
+  assert:
+    runs-on: ubuntu-latest
+    if: always()
+    needs: [test]
+    steps:
+      - uses: nick-fields/assert-action@v1
+        with:
+          expected: success
+          actual: ${{ needs.test.outputs.outcome }}
+
+      - uses: nick-fields/assert-action@v1
+        with:
+          expected: ""
+          actual: ${{ needs.test.outputs.result }}
+

.github/workflows/test-negative.yml

@@ -0,0 +1,48 @@
+name: Test non-existent component stack
+on:
+  #  # Uncomment when test added first time to register workflow and comment it back after workflow would be registered
+  #  #
+  #  # Added pull_request to register workflow from the PR.
+  #  # Read more https://stackoverflow.com/questions/63362126/github-actions-how-to-run-a-workflow-created-on-a-non-master-branch-from-the-wo
+  # pull_request: {}
+  workflow_dispatch: {}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    outputs:
+      result: ${{ steps.current.outputs.value }}
+      outcome: ${{ steps.current.outcome }}
+    steps:
+      - name: Setup terraform
+        uses: hashicorp/setup-terraform@v2
+      - name: Setup atmos
+        uses: cloudposse/[email protected]
+        with:
+          install-wrapper: false
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - uses: ./
+        id: current
+        with:
+          component: bar
+          stack: core-ue1-dev
+          settings-path: settings.level1.level2.level3.secrets-arn
+
+  assert:
+    runs-on: ubuntu-latest
+    if: always()
+    needs: [test]
+    steps:
+      - uses: nick-fields/assert-action@v1
+        with:
+          expected: failure
+          actual: ${{ needs.test.outputs.outcome }}
+
+      - uses: nick-fields/assert-action@v1
+        with:
+          expected: ""
+          actual: ${{ needs.test.outputs.result }}
+

.github/workflows/test-wrong-atmos-config.yml

@@ -0,0 +1,48 @@
+name: Test wrong atmos config
+on:
+  #  # Uncomment when test added first time to register workflow and comment it back after workflow would be registered
+  #  #
+  #  # Added pull_request to register workflow from the PR.
+  #  # Read more https://stackoverflow.com/questions/63362126/github-actions-how-to-run-a-workflow-created-on-a-non-master-branch-from-the-wo
+  # pull_request: {}
+  workflow_dispatch: {}
+
+env:
+  ATMOS_CLI_CONFIG_PATH: /tmp
+  ATMOS_BASE_PATH: /tmp
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    outputs:
+      result: ${{ steps.current.outputs.value }}
+      outcome: ${{ steps.current.outcome }}
+    steps:
+      - name: Setup terraform
+        uses: hashicorp/setup-terraform@v2
+      - name: Setup atmos
+        uses: cloudposse/[email protected]
+        with:
+          install-wrapper: false
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - uses: ./
+        id: current
+        with:
+          component: foo
+          stack: core-ue1-dev
+          settings-path: settings.level1.level2.level3.secrets-arn
+
+  assert:
+    runs-on: ubuntu-latest
+    if: always()
+    needs: [test]
+    steps:
+      - uses: nick-fields/assert-action@v1
+        with:
+          expected: failure
+          actual: ${{ needs.test.outputs.outcome }}
+

action.yml

@@ -31,6 +31,6 @@ runs:
           ${{ inputs.component }} \
           -s ${{ inputs.stack }} \
           --format json \
-          --file "$OUTPUT_FILE" || echo '{}' > "$OUTPUT_FILE"
-        value=$(jq -rc --arg key ${{ inputs.settings-path }} '. | getpath($key | split("."))' "$OUTPUT_FILE")
+          --file "$OUTPUT_FILE"
+        value=$(jq -rc --arg key ${{ inputs.settings-path }} '. | getpath($key | split(".")) | if . == null then "" else . end' "$OUTPUT_FILE")
         echo "value=$value" >> $GITHUB_OUTPUT