diff --git a/src/kaleidoscope/Runtime.cpp b/src/kaleidoscope/Runtime.cpp
index 59ab3eb8..07ac4d67 100644
--- a/src/kaleidoscope/Runtime.cpp
+++ b/src/kaleidoscope/Runtime.cpp
@@ -59,26 +59,18 @@ Runtime_::setup(void) {
 
 void
 Runtime_::loop(void) {
-  std::cout << "epan 2.2.1.1" << std::endl;
   millis_at_cycle_start_ = millis();
-  std::cout << "epan 2.2.1.2" << std::endl;
 
   kaleidoscope::Hooks::beforeEachCycle();
-  std::cout << "epan 2.2.1.3" << std::endl;
 
   device().scanMatrix();
-  std::cout << "epan 2.2.1.4" << std::endl;
 
   kaleidoscope::Hooks::beforeReportingState();
-  std::cout << "epan 2.2.1.5" << std::endl;
 
   device().hid().keyboard().sendReport();
-  std::cout << "epan 2.2.1.6" << std::endl;
   device().hid().keyboard().releaseAllKeys();
-  std::cout << "epan 2.2.1.7" << std::endl;
 
   kaleidoscope::Hooks::afterEachCycle();
-  std::cout << "epan 2.2.1.8" << std::endl;
 }
 
 Runtime_ Runtime;
diff --git a/testing/common/Simulator.cpp b/testing/common/Simulator.cpp
index ece065a5..265e4e3c 100644
--- a/testing/common/Simulator.cpp
+++ b/testing/common/Simulator.cpp
@@ -1,5 +1,5 @@
 /* kailedoscope::sim - Simulator for Unit Testing Kaleidoscope
- * Copyright (C) 2020  epan <epaniagua@google.com>
+ * Copyright (C) 2020  Eric Paniagua <epaniagua@google.com>
  *
  * This program is free software: you can redistribute it and/or modify it under
  * the terms of the GNU General Public License as published by the Free Software
@@ -24,9 +24,7 @@ namespace kaleidoscope {
 namespace testing {
 
 void Simulator::RunCycle() {
-  std::cout << "epan 2.2.1" << std::endl;
   Kaleidoscope.loop();
-  std::cout << "epan 2.2.2" << std::endl;
 }
 
 void Simulator::RunCycles(size_t n) {
diff --git a/testing/common/VirtualDeviceTest.cpp b/testing/common/VirtualDeviceTest.cpp
index bce40c5e..267ebf7d 100644
--- a/testing/common/VirtualDeviceTest.cpp
+++ b/testing/common/VirtualDeviceTest.cpp
@@ -20,11 +20,8 @@ namespace kaleidoscope {
 namespace testing {
 
 void VirtualDeviceTest::RunCycle() {
-  std::cout << "epan 2.1" << std::endl;
   state_.Clear();
-  std::cout << "epan 2.2" << std::endl;
   sim_.RunCycle();
-  std::cout << "epan 2.3" << std::endl;
 }
 
 void VirtualDeviceTest::RunCycles(size_t n) {
diff --git a/testing/common/fix-macros.h b/testing/common/fix-macros.h
index 2940f996..4ca9bd22 100644
--- a/testing/common/fix-macros.h
+++ b/testing/common/fix-macros.h
@@ -14,9 +14,9 @@
  * this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-// We intentionally omit `#pragma once` since we need to set up macros per
-// compilation unit.
-// #pragma once
+#pragma once
+
+#include "Kaleidoscope.h"
 
 #undef min
 #undef max
@@ -27,6 +27,8 @@
 #define SETUP_GOOGLETEST() \
   void executeTestFunction() { \
     setup(); /* setup Kaleidoscope */ \
+    /* Turn off virtual_io's input. */ \
+    Kaleidoscope.device().keyScanner().setEnableReadMatrix(false); \
     testing::InitGoogleTest(); \
     RUN_ALL_TESTS(); \
   }
diff --git a/testing/hello-simulator/Makefile b/testing/hello-simulator/Makefile
index 527b7a19..bb6fb3ca 100644
--- a/testing/hello-simulator/Makefile
+++ b/testing/hello-simulator/Makefile
@@ -11,7 +11,7 @@ TEST_OBJS=$(patsubst %.cpp,${OBJ_DIR}/%.o,$(TEST_FILES))
 
 run: ${BIN_DIR}/${BIN_FILE}
 	@echo "run"
-	"./${BIN_DIR}/${BIN_FILE}" -t
+	"./${BIN_DIR}/${BIN_FILE}" -t -q
 
 ${BIN_DIR}/${BIN_FILE}: ${TEST_OBJS} FORCE
 	@echo "link"
diff --git a/testing/kaleidoscope/Makefile b/testing/kaleidoscope/Makefile
index bb991b5d..e94ac7c3 100644
--- a/testing/kaleidoscope/Makefile
+++ b/testing/kaleidoscope/Makefile
@@ -12,7 +12,7 @@ TEST_OBJS=$(patsubst $(SRC_DIR)/%.cpp,${OBJ_DIR}/%.o,$(TEST_FILES))
 
 run: ${BIN_DIR}/${BIN_FILE}
 	@echo "run"
-	"./${BIN_DIR}/${BIN_FILE}" -t
+	"./${BIN_DIR}/${BIN_FILE}" -t -q
 
 ${BIN_DIR}/${BIN_FILE}: ${TEST_OBJS} FORCE
 	@echo "link"
diff --git a/testing/kaleidoscope/test/simulator_test.cpp b/testing/kaleidoscope/test/simulator_test.cpp
index bffbe165..ad7775e8 100644
--- a/testing/kaleidoscope/test/simulator_test.cpp
+++ b/testing/kaleidoscope/test/simulator_test.cpp
@@ -38,27 +38,21 @@ using ::testing::IsEmpty;
 class KeyboardReports : public VirtualDeviceTest {};
 
 TEST_F(KeyboardReports, KeysActiveWhenPressed) {
-  std::cout << "epan 1" << std::endl;
   sim_.Press(2, 1); // A
-  std::cout << "epan 2" << std::endl;
   RunCycle();
-  std::cout << "epan 3" << std::endl;
 
   EXPECT_EQ(Result().KeyboardReports().size(), 1);
-  std::cout << "epan 4" << std::endl;
   EXPECT_THAT(
       Result().KeyboardReports(0).ActiveKeycodes(),
       ContainsKey(Key_A));
-  std::cout << "epan 5" << std::endl;
 
   sim_.Release(2, 1);  // A
-  std::cout << "epan 6" << std::endl;
   RunCycles(2);
-  std::cout << "epan 7" << std::endl;
 
-  std::cout << "epan 8" << std::endl;
-  EXPECT_THAT(Result().KeyboardReports(), IsEmpty());
-  std::cout << "epan 9" << std::endl;
+  EXPECT_EQ(Result().KeyboardReports().size(), 1);
+  EXPECT_THAT(
+      Result().KeyboardReports(0).ActiveKeycodes(),
+      IsEmpty());
 }
 
 }  // namespace