Pin the Code view to the entry module in Node bundle tests

The tests used a Dag's own file as the entrypoint, so a resolver that
returned the first dag_source_paths entry would still pass. Use a
separate main.ts entrypoint instead.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: 2 people

task-sdk/tests/task_sdk/coordinators/node/test_bundle_reader.py

@@ -357,15 +357,16 @@ def test_reads_one_source_region_per_dag(self, tmp_path):
             sources=[
                 ("sales.ts", b"export const sales = 1;\n"),
                 ("inventory.ts", b"export const inv = 2;\n"),
+                ("main.ts", b'import "./sales";\n'),
             ],
             dag_source_paths={"sales": "sales.ts", "inventory": "inventory.ts"},
-            entrypoint_path="sales.ts",
+            entrypoint_path="main.ts",
         )
 
         assert read_bundle(bundle).dag_ids == frozenset({"sales", "inventory"})
         assert read_bundle_source(bundle, "sales") == "export const sales = 1;\n"
         assert read_bundle_source(bundle, "inventory") == "export const inv = 2;\n"
-        assert read_bundle_entrypoint_source(bundle) == "export const sales = 1;\n"
+        assert read_bundle_entrypoint_source(bundle) == 'import "./sales";\n'
 
     def test_reads_no_entrypoint_source_when_none_is_declared(self, tmp_path):
         bundle = write_bundle(tmp_path, "sales", entrypoint_path=None)

task-sdk/tests/task_sdk/coordinators/node/test_dag_importer.py

@@ -94,18 +94,23 @@ def raise_permission_error(self, *args, **kwargs):
 
 class TestGetSourceCode:
     def test_returns_the_entrypoint_source_for_every_dag(self, importer, tmp_path):
-        sales = '/* the */ export const sales = new Dag({ dagId: "sales" });\n'
+        sales = 'export const sales = new Dag({ dagId: "sales" });\n'
         inventory = 'export const inventory = new Dag({ dagId: "inventory" });\n'
+        main = '/* the */ import "./sales";\nimport "./inventory";\n'
         path = write_bundle(
             tmp_path,
             "sales",
             "inventory",
-            sources=[("sales.ts", sales.encode()), ("inventory.ts", inventory.encode())],
+            sources=[
+                ("sales.ts", sales.encode()),
+                ("inventory.ts", inventory.encode()),
+                ("main.ts", main.encode()),
+            ],
             dag_source_paths={"sales": "sales.ts", "inventory": "inventory.ts"},
-            entrypoint_path="sales.ts",
+            entrypoint_path="main.ts",
         )
 
-        assert importer.get_source_code(FilesystemDagDefinition(path)) == DagSourceCode(sales, "typescript")
+        assert importer.get_source_code(FilesystemDagDefinition(path)) == DagSourceCode(main, "typescript")
 
     def test_returns_a_notice_without_an_entrypoint_source(self, importer, tmp_path):
         path = write_bundle(tmp_path, "sales", entrypoint_path=None)