Display and Test ALL Unity3D inputs (old Input System)

ReadInputManager.cs

using UnityEngine;
using System.Collections;

using UnityEditor;

// @kurtdekker
// You must put this in an Editor folder!
// Once compiled, you must run it from Menu -> Assets -> ReadInputManager

public class ReadInputManager
{
	public static void ReadAxes()
	{
		var inputManager = AssetDatabase.LoadAllAssetsAtPath("ProjectSettings/InputManager.asset")[0];

		SerializedObject obj = new SerializedObject(inputManager);

		SerializedProperty axisArray = obj.FindProperty("m_Axes");

		if (axisArray.arraySize == 0)
			Debug.LogError("No Axes Defined!");

		string listOfInputAxes = "";
			
		for( int i = 0; i < axisArray.arraySize; ++i )
		{
			var axis = axisArray.GetArrayElementAtIndex(i);

			var name = axis.FindPropertyRelative("m_Name").stringValue;
			var axisVal = axis.FindPropertyRelative("axis").intValue;
			var inputType = (InputType)axis.FindPropertyRelative("type").intValue;

			// @kurtdekker
//			Debug.Log(name);
//			Debug.Log(axisVal);
//			Debug.Log(inputType);

			listOfInputAxes += name + ",";
		}

		string AxesListPath = @"Assets/Resources/" + testinputs.AxesResourceName + ".txt";

		System.IO.File.WriteAllText( AxesListPath, listOfInputAxes);

		AssetDatabase.ImportAsset( AxesListPath	);

		Debug.Log( "Captured InputManager asset axes to file.");
	}

	public enum InputType
	{
		KeyOrMouseButton,
		MouseMovement,
		JoystickAxis,
	};

	[MenuItem("Assets/ReadInputManager")]
	public static void DoRead()
	{
		ReadAxes();
	}
}

testinputs.cs

using UnityEngine;
using UnityEngine.SceneManagement;
using System.Collections;
using System.Collections.Generic;

// @kurtdekker
// once you have run the Assets -> ReadInputManager, put
// this script on a blank GameObject and press Play

public class testinputs : MonoBehaviour
{
	public bool AlphaSort;

	public const string AxesResourceName = "InputManagerAxes/InputManagerAxes";

	string[] axes;

	void Start ()
	{
		string[] all = Resources.Load<TextAsset>( AxesResourceName).text.Split(
			new char[] { ','},
			System.StringSplitOptions.RemoveEmptyEntries);

		// remove dupes
		HashSet<string> hash = new HashSet<string>();
		foreach( var s in all)
		{
			hash.Add( s);
		}

		axes = new string[hash.Count];
		hash.CopyTo( axes, 0);

		if (AlphaSort)
		{
			System.Array.Sort( axes);
		}
	}

	void OnGUI()
	{
		float x = Screen.width * 0.3f;
		float y = Screen.height * 0.05f;
		float w = Screen.width * 0.2f;
		float h = Screen.height - y * 2;

		// @kurtdekker
//		int fs = 12;

		for( int i = 0; i < axes.Length; i++)
		{
			Rect r = new Rect( x, y + (h * i) / axes.Length, w, h / axes.Length);

			GUI.Label( r, axes[i]
//				, OurStyles.LABELCJ(fs)
			);

			r.x += r.width;
		
			GUI.Label( r, System.String.Format( "{0:0.00}", Input.GetAxisRaw( axes[i]))
//				, OurStyles.LABELCJ(fs)
			);
		}
	}
}

// testinputs for Unity - by Kurt Dekker @kurtdekker

To use the above files:

Make a new project
Make a folder structure:

Editor
Resources/InputManagerAxes
Scripts

In Editor, place the ReadInputManager.cs script
In Scripts, place the testinputs.cs script

Open Unity, let everything compile.

Select Assets -> ReadInputManager

That will create the InputManagerAxes file

Make a blank scene

Add a blank GameObject

Add the testinputs.cs script to the blank GameObject

Press RUN

Wiggle your inputs and observe!!