fix: error cause

Author: sonic16x

src/worker/runner/test-runner/index.js

@@ -130,6 +130,22 @@ module.exports = class TestRunner {
         if (error) {
             filterExtraStackFrames(error);
 
+            let current = error.cause;
+            let depth = 1;
+
+            // Propagate errors from the cause into the stack trace of the main error.
+            while (current) {
+                const indent = "    ".repeat(depth);
+                error.stack += `\n\n${indent}Caused by: ${current.stack.split("\n").join(`\n${indent}`)}`;
+
+                current = current.cause;
+
+                depth++;
+            }
+
+            // The original cause must be removed to avoid possible duplicates later.
+            delete error.cause;
+
             await extendWithCodeSnippet(error);
 
             throw Object.assign(error, results);

test/src/worker/runner/test-runner/index.js

@@ -824,6 +824,19 @@ describe("worker/runner/test-runner", () => {
                 assert.match(error.testplaneCtx, { foo: "bar" });
             });
 
+            it("should extend error with testplaneCtx object passed to execution thread", async () => {
+                ExecutionThread.create.callsFake(() => {
+                    ExecutionThread.prototype.run.callsFake(() => {
+                        return Promise.reject(new Error("new error", { cause: new Error("original error") }));
+                    });
+                    return Object.create(ExecutionThread.prototype);
+                });
+
+                const error = await run_().catch(e => e);
+
+                assert.include(error.stack, "Caused by: Error: original error");
+            });
+
             it("should extend testplaneCtx with empty assert view results", async () => {
                 ExecutionThread.prototype.run.rejects(new Error());