NEW: Add two performance tests measuring frame times (#2027)

* one test tries to simluate keyboard/mouse FPS input
* one test measures time it takes to do nothing at all

Author: stefanunity

Assets/Tests/InputSystem/CorePerformanceTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.InputSystem;
 using UnityEngine.InputSystem.LowLevel;
@@ -1100,4 +1101,103 @@ public void Performance_OptimizedControls_ReadingPose4kTimes(OptimizationTestTyp
     }
 
 #endif
+
+    #if UNITY_2022_3_OR_NEWER
+
+    // All the profiler markers in the package code.
+    // Needed for the tests below.
+    string[] allInputSystemProfilerMarkers =
+    {
+        "InputUpdate",
+        "InputSystem.onBeforeUpdate",
+        "InputSystem.onAfterUpdate",
+        "PreUpdate.NewInputUpdate",
+        "PreUpdate.InputForUIUpdate",
+        "FixedUpdate.NewInputFixedUpdate"
+    };
+
+    [PrebuildSetup(typeof(ProjectWideActionsBuildSetup))]
+    [PostBuildCleanup(typeof(ProjectWideActionsBuildSetup))]
+    [UnityTest, Performance]
+    [Category("Performance")]
+    public IEnumerator Performance_MeasureInputSystemFrameTimeWithProfilerMarkers_FPS()
+    {
+        var keyboard = InputSystem.AddDevice<Keyboard>();
+        var mouse = InputSystem.AddDevice<Mouse>();
+
+        var moveAction = InputSystem.actions.FindAction("Move");
+        var lookAction = InputSystem.actions.FindAction("Look");
+        var attackAction = InputSystem.actions.FindAction("Attack");
+        var jumpAction = InputSystem.actions.FindAction("Jump");
+        var sprintAction = InputSystem.actions.FindAction("Sprint");
+
+        int performedCallCount = 0;
+
+        moveAction.performed += context => {
+            performedCallCount++;
+        };
+
+        lookAction.performed += context => {
+            performedCallCount++;
+        };
+
+        attackAction.performed += context => {
+            performedCallCount++;
+        };
+
+        jumpAction.performed += context => {
+            performedCallCount++;
+        };
+
+        sprintAction.performed += context => {
+            performedCallCount++;
+        };
+
+        using (Measure.ProfilerMarkers(allInputSystemProfilerMarkers))
+        {
+            Press(keyboard.wKey, queueEventOnly: true);
+
+            for (int i = 0; i < 500; ++i)
+            {
+                if (i % 60 == 0)
+                {
+                    PressAndRelease(keyboard.aKey, queueEventOnly: true);
+                    PressAndRelease(keyboard.sKey, queueEventOnly: true);
+                    PressAndRelease(keyboard.dKey, queueEventOnly: true);
+
+                    PressAndRelease(keyboard.leftShiftKey, queueEventOnly: true);
+
+                    PressAndRelease(keyboard.spaceKey, queueEventOnly: true);
+                }
+
+                Click(mouse.leftButton, queueEventOnly: true);
+
+                //mouse movements for higher polling mice
+                for (int j = 0; j < 99; ++j)
+                {
+                    Move(mouse.position, new Vector2(i + j, i + j), queueEventOnly: true);
+                }
+
+                InputSystem.Update();
+
+                yield return null;
+            }
+        }
+    }
+
+    [PrebuildSetup(typeof(ProjectWideActionsBuildSetup))]
+    [PostBuildCleanup(typeof(ProjectWideActionsBuildSetup))]
+    [UnityTest, Performance]
+    [Category("Performance")]
+    public IEnumerator Performance_MeasureInputSystemFrameTimeWithProfilerMarkers_DoingNothing()
+    {
+        yield return Measure.Frames()
+            .WarmupCount(30)
+            .DontRecordFrametime()
+            .MeasurementCount(500)
+            .ProfilerMarkers(allInputSystemProfilerMarkers)
+            .Run();
+    }
+
+    #endif
 }