New 2018 and later build setup (#1001)

wpilibcIntegrationTests/src/main/native/cpp/AnalogLoopTest.cpp

@@ -0,0 +1,131 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2014-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "AnalogInput.h"
+#include "AnalogOutput.h"
+#include "AnalogTrigger.h"
+#include "Counter.h"
+#include "TestBench.h"
+#include "Timer.h"
+#include "gtest/gtest.h"
+
+using namespace frc;
+
+static const double kDelayTime = 0.01;
+
+/**
+ * A fixture with an analog input and an analog output wired together
+ */
+class AnalogLoopTest : public testing::Test {
+ protected:
+  AnalogInput* m_input;
+  AnalogOutput* m_output;
+
+  void SetUp() override {
+    m_input = new AnalogInput(TestBench::kFakeAnalogOutputChannel);
+    m_output = new AnalogOutput(TestBench::kAnalogOutputChannel);
+  }
+
+  void TearDown() override {
+    delete m_input;
+    delete m_output;
+  }
+};
+
+/**
+ * Test analog inputs and outputs by setting one and making sure the other
+ * matches.
+ */
+TEST_F(AnalogLoopTest, AnalogInputWorks) {
+  // Set the output voltage and check if the input measures the same voltage
+  for (int32_t i = 0; i < 50; i++) {
+    m_output->SetVoltage(i / 10.0);
+
+    Wait(kDelayTime);
+
+    EXPECT_NEAR(m_output->GetVoltage(), m_input->GetVoltage(), 0.01);
+  }
+}
+
+/**
+ * Test if we can use an analog trigger to  check if the output is within a
+ * range correctly.
+ */
+TEST_F(AnalogLoopTest, AnalogTriggerWorks) {
+  AnalogTrigger trigger(m_input);
+  trigger.SetLimitsVoltage(2.0, 3.0);
+
+  m_output->SetVoltage(1.0);
+  Wait(kDelayTime);
+
+  EXPECT_FALSE(trigger.GetInWindow())
+      << "Analog trigger is in the window (2V, 3V)";
+  EXPECT_FALSE(trigger.GetTriggerState()) << "Analog trigger is on";
+
+  m_output->SetVoltage(2.5);
+  Wait(kDelayTime);
+
+  EXPECT_TRUE(trigger.GetInWindow())
+      << "Analog trigger is not in the window (2V, 3V)";
+  EXPECT_FALSE(trigger.GetTriggerState()) << "Analog trigger is on";
+
+  m_output->SetVoltage(4.0);
+  Wait(kDelayTime);
+
+  EXPECT_FALSE(trigger.GetInWindow())
+      << "Analog trigger is in the window (2V, 3V)";
+  EXPECT_TRUE(trigger.GetTriggerState()) << "Analog trigger is not on";
+}
+
+/**
+ * Test if we can count the right number of ticks from an analog trigger with
+ * a counter.
+ */
+TEST_F(AnalogLoopTest, AnalogTriggerCounterWorks) {
+  AnalogTrigger trigger(m_input);
+  trigger.SetLimitsVoltage(2.0, 3.0);
+
+  Counter counter(trigger);
+
+  // Turn the analog output low and high 50 times
+  for (int32_t i = 0; i < 50; i++) {
+    m_output->SetVoltage(1.0);
+    Wait(kDelayTime);
+    m_output->SetVoltage(4.0);
+    Wait(kDelayTime);
+  }
+
+  // The counter should be 50
+  EXPECT_EQ(50, counter.Get())
+      << "Analog trigger counter did not count 50 ticks";
+}
+
+static void InterruptHandler(uint32_t interruptAssertedMask, void* param) {
+  *reinterpret_cast<int32_t*>(param) = 12345;
+}
+
+TEST_F(AnalogLoopTest, AsynchronusInterruptWorks) {
+  int32_t param = 0;
+  AnalogTrigger trigger(m_input);
+  trigger.SetLimitsVoltage(2.0, 3.0);
+
+  // Given an interrupt handler that sets an int32_t to 12345
+  std::shared_ptr<AnalogTriggerOutput> triggerOutput =
+      trigger.CreateOutput(AnalogTriggerType::kState);
+  triggerOutput->RequestInterrupts(InterruptHandler, &param);
+  triggerOutput->EnableInterrupts();
+
+  // If the analog output moves from below to above the window
+  m_output->SetVoltage(0.0);
+  Wait(kDelayTime);
+  m_output->SetVoltage(5.0);
+  triggerOutput->CancelInterrupts();
+
+  // Then the int32_t should be 12345
+  Wait(kDelayTime);
+  EXPECT_EQ(12345, param) << "The interrupt did not run.";
+}