refactor: Implement test run helper to work with services

packages/backend/src/services/test-run.ts

@@ -0,0 +1,65 @@
+import Step from '../models/step';
+import { processFlow } from '../services/flow';
+import { processTrigger } from '../services/trigger';
+import { processAction } from '../services/action';
+
+type TestRunOptions = {
+  stepId: string;
+};
+
+const testRun = async (options: TestRunOptions) => {
+  const untilStep = await Step.query()
+    .findById(options.stepId)
+    .throwIfNotFound();
+
+  const flow = await untilStep.$relatedQuery('flow');
+  const [triggerStep, ...actionSteps] = await flow
+    .$relatedQuery('steps')
+    .withGraphFetched('connection')
+    .orderBy('position', 'asc');
+
+  const { data, error: triggerError } = await processFlow({
+    flowId: flow.id,
+    testRun: true,
+  });
+
+  const firstTriggerDataItem = data[0];
+
+  const { executionId, executionStep: triggerExecutionStep } =
+    await processTrigger({
+      flowId: flow.id,
+      stepId: triggerStep.id,
+      triggerDataItem: firstTriggerDataItem,
+      testRun: true,
+    });
+
+  if (triggerError) {
+    const { executionStep: triggerExecutionStepWithError } =
+      await processTrigger({
+        flowId: flow.id,
+        stepId: triggerStep.id,
+        error: triggerError,
+        testRun: true,
+      });
+
+    return { executionStep: triggerExecutionStepWithError };
+  }
+
+  if (triggerStep.id === untilStep.id) {
+    return { executionStep: triggerExecutionStep };
+  }
+
+  for (const actionStep of actionSteps) {
+    const { executionStep: actionExecutionStep } = await processAction({
+      flowId: flow.id,
+      stepId: actionStep.id,
+      executionId,
+    });
+
+    if (actionStep.id === untilStep.id || actionExecutionStep.errorDetails) {
+      return { executionStep: actionExecutionStep };
+    }
+  }
+};
+
+export default testRun;