diff --git a/testr/file_data.py b/testr/file_data.py
index 5c0243b..a1e32d0 100644
--- a/testr/file_data.py
+++ b/testr/file_data.py
@@ -38,24 +38,24 @@ class ExecutableRunner(TestRunner):
                 stdin=asyncio.subprocess.PIPE,
             )
 
-        input_data = (await data.get_input()).encode()
+        input_data = await data.get_input()
 
         try:
             out_stream, err_stream = await asyncio.wait_for(
-                    proc.communicate(input=input_data), timeout=5.0)
+                    proc.communicate(input=input_data.encode()), timeout=5.0)
         except TimeoutError:
             proc.kill()
-            return TestStatus(code=StatusCode.TLE, stderr="", stdout="")
+            return TestStatus(code=StatusCode.TLE, stderr="", stdout="", stdin=input_data)
 
         stdout: str = out_stream.decode()
         stderr: str = err_stream.decode()
 
         if proc.returncode != 0:
-            return TestStatus(code=StatusCode.IR, stdout=stdout, stderr=stderr)
+            return TestStatus(code=StatusCode.IR, stdout=stdout, stderr=stderr, stdin=input_data)
 
         correct: bool = await data.validate_output(stdout)
         ret_code = StatusCode.AC if correct else StatusCode.WA
-        return TestStatus(code=ret_code, stdout=stdout, stderr=stderr)
+        return TestStatus(code=ret_code, stdout=stdout, stderr=stderr, stdin=input_data)
 
 
 class DirectorySuite(TestSuite):
diff --git a/testr/runner.py b/testr/runner.py
index 9ef7a40..dff6dda 100644
--- a/testr/runner.py
+++ b/testr/runner.py
@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 from abc import ABC, abstractmethod
-from collections.abc import Iterable
 from enum import Enum, auto
+from typing import AsyncIterator, Iterator
 
 
 class StatusCode(Enum):
@@ -34,6 +34,7 @@ class TestStatus:
     """
     
     code: StatusCode
+    stdin: str
     stderr: str
     stdout: str
 
@@ -58,15 +59,19 @@ class TestData(TestInput, TestValidator):
     pass
 
 
-class TestRunner(ABC):
-    """Runner for test cases."""
-
-    @abstractmethod
-    async def run_test(self, data: TestData) -> StatusCode: pass
-
-
 class TestSuite(ABC):
     """Loader for multiple test cases."""
 
     @abstractmethod
-    def __iter__(self) -> Iterable[TestData]: pass
+    def __iter__(self) -> Iterator[TestData]: pass
+
+
+class TestRunner(ABC):
+    """Runner for test cases."""
+
+    @abstractmethod
+    async def run_test(self, data: TestData) -> TestStatus: pass
+
+    async def run_test_suite(self, data: TestSuite) -> AsyncIterator[TestStatus]:
+        for test_case in data:
+            yield await self.run_test(test_case)