Hi Ray :)

src/main/java/frc/robot/Constants.java

@@ -4,6 +4,8 @@
 
 package frc.robot;
 
+import java.security.PublicKey;
+
 /**
  * The Constants class provides a convenient place for teams to hold robot-wide numerical or boolean
  * constants. This class should not be used for any other purpose. All constants should be declared
@@ -66,4 +68,8 @@ public final class Constants {
     public static final int INTAKE_MOTOR_ID = 2; 
   }
   
+  public static class HopperConstants {
+    public static final int KICKER_MOTOR_ID = 0;
+    public static final int SPINDEXER_MOTOR_ID = 1;    
+  }
 }

src/main/java/frc/robot/subsystems/ExampleSubsystem copy.java

@@ -0,0 +1,60 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package frc.robot.subsystems;
+
+import org.fairportrobotics.frc.posty.TestableSubsystem;
+import org.fairportrobotics.frc.posty.test.PostTest;
+import static org.fairportrobotics.frc.posty.assertions.Assertions.*;
+
+import edu.wpi.first.wpilibj2.command.Command;
+
+public class ExampleSubsystem extends TestableSubsystem {
+  /** Creates a new ExampleSubsystem. */
+  public ExampleSubsystem() {}
+
+  /**
+   * Example command factory method.
+   *
+   * @return a command
+   */
+  public Command exampleMethodCommand() {
+    // Inline construction of command goes here.
+    // Subsystem::RunOnce implicitly requires `this` subsystem.
+    return runOnce(
+        () -> {
+          /* one-time action goes here */
+        });
+  }
+
+  /**
+   * An example method querying a boolean state of the subsystem (for example, a digital sensor).
+   *
+   * @return value of some boolean subsystem state, such as a digital sensor.
+   */
+  public boolean exampleCondition() {
+    // Query some boolean state, such as a digital sensor.
+    return false;
+  }
+
+  @Override
+  public void periodic() {
+    // This method will be called once per scheduler run
+  }
+
+  @Override
+  public void simulationPeriodic() {
+    // This method will be called once per scheduler run during simulation
+  }
+
+  @PostTest(name = "A friendly name", enabled = true)
+  public void myFailingPostTest(){
+    assertThat(true).isFalse();
+  }
+
+  @PostTest(enabled = true)
+  public void myPassingPostTest(){
+    assertThat("Hello World").endWith("World");
+  }
+}

src/main/java/frc/robot/subsystems/HopperSubsystem.java

@@ -10,7 +10,7 @@ import org.fairportrobotics.frc.posty.test.PostTest;
 import com.ctre.phoenix6.hardware.TalonFX;
 
 import static org.fairportrobotics.frc.posty.assertions.Assertions.*;
-
+import frc.robot.Constants;
 import edu.wpi.first.wpilibj2.command.Command;
 
 public class HopperSubsystem extends TestableSubsystem {
@@ -19,28 +19,23 @@ public class HopperSubsystem extends TestableSubsystem {
     private TalonFX kickerMotor;
   /** Creates a new HopperSubsystem. */
   public HopperSubsystem() {
-    spindexerMotor = new TalonFX(0);
-    kickerMotor = new TalonFX(1);
+    spindexerMotor = new TalonFX(Constants.HopperConstants.SPINDEXER_MOTOR_ID);
+    kickerMotor = new TalonFX(Constants.HopperConstants.KICKER_MOTOR_ID);
   } 
 
   public void feed() {
-
     kickerMotor.set(0.5);
   }
 
   public void reverse() {
-
     kickerMotor.set(-0.5);
-
   } 
 
   public void stop() {
-
     kickerMotor.set(0);
   }
 
   public void spin(double speed) {
-
     spindexerMotor.set(speed);
   }