test(compiler-worker): regression test stdin passthrough untuk Python input() dan C scanf()

compiler_worker/tests/test_app.py

@@ -0,0 +1,80 @@
+"""Regression tests for compiler_worker stdin passthrough.
+
+compiler_worker/ is NOT a Python package — app.py is a standalone Flask
+module. It is loaded via importlib from its absolute path.
+"""
+
+import os
+import importlib.util
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+_APP_PATH = os.path.join(os.path.dirname(_HERE), "app.py")
+
+spec = importlib.util.spec_from_file_location("worker_app", _APP_PATH)
+worker_app = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(worker_app)
+
+
+# --- Python input() ---------------------------------------------------------
+
+
+def test_python_input_single_line_with_stdin():
+    code = 'nama = input("Siapa nama kamu? ")\nprint(f"Halo, {nama}!")\n'
+    result = worker_app.run_python_code(code, stdin="Budi\n")
+    assert result["success"] is True
+    assert "Halo, Budi!" in result["output"]
+
+
+def test_python_input_multiple_lines_with_stdin():
+    code = (
+        'nama = input("Nama: ")\n'
+        'umur = input("Umur: ")\n'
+        'print(f"{nama} berumur {umur} tahun")\n'
+    )
+    result = worker_app.run_python_code(code, stdin="Budi\n17\n")
+    assert result["success"] is True
+    assert "Budi berumur 17 tahun" in result["output"]
+
+
+def test_python_input_empty_stdin_raises_eoferror():
+    code = 'nama = input("Siapa nama kamu? ")\nprint(f"Halo, {nama}!")\n'
+    result = worker_app.run_python_code(code, stdin="")
+    # Worker reports success even when the child process exits with an error
+    # (subprocess returncode is not checked); the traceback lands in stderr.
+    assert result["success"] is True
+    assert "EOFError" in result["error"]
+
+
+# --- C scanf() --------------------------------------------------------------
+
+
+def test_c_scanf_single_line_with_stdin():
+    code = (
+        "#include <stdio.h>\n"
+        "int main() {\n"
+        "    char nama[32];\n"
+        "    scanf(\"%31s\", nama);\n"
+        "    printf(\"Halo, %s!\\n\", nama);\n"
+        "    return 0;\n"
+        "}\n"
+    )
+    result = worker_app.run_c_code(code, stdin="Budi\n")
+    assert result["success"] is True
+    assert "Halo, Budi!" in result["output"]
+
+
+def test_c_scanf_empty_stdin_returns_no_output():
+    code = (
+        "#include <stdio.h>\n"
+        "int main() {\n"
+        "    char nama[32] = \"\";\n"
+        "    if (scanf(\"%31s\", nama) != 1) {\n"
+        "        return 1;\n"
+        "    }\n"
+        "    printf(\"Halo, %s!\\n\", nama);\n"
+        "    return 0;\n"
+        "}\n"
+    )
+    result = worker_app.run_c_code(code, stdin="")
+    assert result["success"] is True
+    assert "Halo," not in result["output"]