More unit tests, fixes

Plugins/PkmnLib.Plugin.Gen7.Tests/Scripts/Moves/EndeavorTests.cs

@@ -0,0 +1,81 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+namespace PkmnLib.Plugin.Gen7.Tests.Scripts.Moves;
+
+/// <summary>
+/// Tests for the <see cref="Endeavor"/> move script.
+/// Gen VII Bulbapedia behavior: "Endeavor deals damage to the target equal to the target's remaining HP
+/// minus the user's remaining HP, making them both equal. It has no effect if the target's HP is already
+/// equal to or lower than the user's HP."
+/// </summary>
+public class EndeavorTests
+{
+    private static (Endeavor script, IExecutingMove move, IPokemon target) CreateTestSetup(uint userHealth,
+        uint targetHealth)
+    {
+        var script = new Endeavor();
+        var move = Substitute.For<IExecutingMove>();
+        var user = Substitute.For<IPokemon>();
+        user.CurrentHealth.Returns(userHealth);
+        move.User.Returns(user);
+        var target = Substitute.For<IPokemon>();
+        target.CurrentHealth.Returns(targetHealth);
+        return (script, move, target);
+    }
+
+    /// <summary>
+    /// Bulbapedia: "Endeavor deals damage to the target equal to the target's remaining HP minus the
+    /// user's remaining HP, making them both equal."
+    /// </summary>
+    [Test, Arguments(1u, 100u, 99u), Arguments(50u, 100u, 50u), Arguments(99u, 100u, 1u), Arguments(10u, 250u, 240u)]
+    public async Task ChangeMoveDamage_UserHpBelowTarget_DamageEqualsHpDifference(uint userHealth, uint targetHealth,
+        uint expectedDamage)
+    {
+        // Arrange
+        var (script, move, target) = CreateTestSetup(userHealth, targetHealth);
+        var damage = 0u;
+
+        // Act
+        script.ChangeMoveDamage(move, target, 0, ref damage);
+
+        // Assert
+        await Assert.That(damage).IsEqualTo(expectedDamage);
+    }
+
+    /// <summary>
+    /// Bulbapedia: "It has no effect if the target's HP is already equal to or lower than the user's HP."
+    /// With equal HP the script does not set any damage.
+    /// </summary>
+    [Test]
+    public async Task ChangeMoveDamage_UserHpEqualToTarget_DamageUnchanged()
+    {
+        // Arrange
+        var (script, move, target) = CreateTestSetup(100, 100);
+        var damage = 0u;
+
+        // Act
+        script.ChangeMoveDamage(move, target, 0, ref damage);
+
+        // Assert
+        await Assert.That(damage).IsEqualTo(0u);
+    }
+
+    /// <summary>
+    /// Bulbapedia: "It has no effect if the target's HP is already equal to or lower than the user's HP."
+    /// With the target below the user, the damage is not modified (and does not underflow).
+    /// </summary>
+    [Test]
+    public async Task ChangeMoveDamage_UserHpAboveTarget_DamageUnchanged()
+    {
+        // Arrange
+        var (script, move, target) = CreateTestSetup(100, 50);
+        var damage = 0u;
+
+        // Act
+        script.ChangeMoveDamage(move, target, 0, ref damage);
+
+        // Assert
+        await Assert.That(damage).IsEqualTo(0u);
+    }
+}