// This file (RequiresNoMoreThanNOfUnitTypeRequirementTest.cs) is a part of the IBBoard.WarFoundry.API.Tests project and is copyright 2011 IBBoard
// 
// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
using System;
using NUnit.Framework;
using IBBoard.WarFoundry.API.Objects.Mock;
using NUnit.Framework.SyntaxHelpers;

namespace IBBoard.WarFoundry.API.Objects.Requirement
{
	[TestFixture()]
	public class UnitRequiresNoMoreThanNOfUnitTypeRequirementTest : AbstractUnitRequirementTest<UnitType>
	{
		private MockRace mockRace;
		private UnitType unitType1;
		private UnitType unitType2;
		private UnitType unitType3;

		[TestFixtureSetUp()]
		public void SetupRace()
		{
			mockRace = new MockRace();
			unitType1 = new MockUnitType("type1", "Unit Type 1");
			mockRace.AddUnitType(unitType1);
			unitType2 = new MockUnitType("type2", "Unit Type 2");
			mockRace.AddUnitType(unitType2);
			unitType3 = new MockUnitType("type3", "Unit Type 3");
			mockRace.AddUnitType(unitType3);
		}

		[Test()]
		public void TestAddingUnitWithNoUnitsAndOneUnitTypeRequiredIsAllowed()
		{
			Army army = new Army(mockRace, "Test", 1000);
			Unit unit = CreateUnitOfType(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__PassesAdding(req, unit, army);
		}

		[Test()]
		public void TestAddingUnitTypeWithNoUnitsAndOneUnitTypeRequiredIsAllowed()
		{
			Army army = new Army(mockRace, "Test", 1000);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__PassesAdding(req, unitType1, army);
		}

		[Test()]
		public void TestAddingUnitWithOneUnitAndOneUnitTypeRequiredIsNotAllowed()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType2, army);
			Unit unit = CreateUnitOfType(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__FailsAdding(req, unit, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1).");
		}

		[Test()]
		public void TestAddingUnitTypeWithOneUnitAndOneUnitTypeRequiredIsNotAllowed()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType2, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__FailsAdding(req, unitType1, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1).");
		}

		[Test()]
		public void TestAddingUnitTypeSetsLimit()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType2, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2, 1);
			Assert_That__PassesAdding(req, unitType1, army);
		}

		[Test()]
		public void TestAddingUnitTypeSetsLimitForFailure()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType2, army);
			AddUnitOfTypeToArmy(unitType2, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2, 1);
			Assert_That__FailsAdding(req, unitType1, army, "Army cannot contain more than: 1 × " + unitType2.Name + " (would have 2).");
		}

		[Test()]
		public void TestAddingUnitTriggersFailure()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType2, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2, 1);
			Assert_That__PassesAdding(req, unitType1, army);
			AddUnitOfTypeToArmy(unitType2, army);
			Assert_That__FailsAdding(req, unitType1, army, "Army cannot contain more than: 1 × " + unitType2.Name + " (would have 2).");
		}

		[Test()]
		public void TestAddingUnitTypeDefaultsToNoMoreThanZero()
		{
			Army army = new Army(mockRace, "Test", 1000);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__PassesAdding(req, unitType1, army);
			AddUnitOfTypeToArmy(unitType2, army);
			Assert_That__FailsAdding(req, unitType1, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1).");
		}

		[Test]
		public void TestRequirementNotApplicableWhenAddingWithLimitedUnitNotIncluded()
		{
			Army army = new Army(mockRace, "Test", 1000);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__AddingNotApplicable(req, unitType3, army);
			Assert_That__AddingNotApplicable(req, CreateUnitOfType(unitType3, army), army);
			Assert_That__AddingNotApplicable(req, unitType2, army);
			Assert_That__AddingNotApplicable(req, CreateUnitOfType(unitType2, army), army);
		}

		[Test]
		public void TestRequirementNotApplicableWhenAddingUnrelatedType()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			Assert_That__AddingNotApplicable(req, unitType3, army);
			AddUnitOfTypeToArmy(unitType2, army);
			Assert_That__AddingNotApplicable(req, unitType3, army);
		}

		[Test()]
		public void TestAddingRequirementUnitTriggersFailure()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2, 1);
			Assert_That__PassesAdding(req, unitType2, army);
			AddUnitOfTypeToArmy(unitType2, army);
			Assert_That__FailsAdding(req, unitType2, army, "Army cannot contain more than: 1 × " + unitType2.Name + " (would have 2).");
		}

		[Test]
		public void TestAddingRequirementUnitFailsWithTwoUnitTypesProhibited()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			req.AddUnitTypeRequirement(unitType3);
			Assert_That__FailsAdding(req, unitType2, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1).");
		}

		[Test]
		public void TestAddingOtherRequirementUnitFailsWithTwoUnitTypesProhibited()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			req.AddUnitTypeRequirement(unitType3);
			Assert_That__FailsAdding(req, unitType3, army, "Army cannot contain more than: 0 × " + unitType3.Name + " (would have 1).");
		}

		[Test]
		public void TestAddingRequirementUnitFailsWithTwoUnitTypesProhibitedAndOneUnitTypeAlreadyInArmy()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			AddUnitOfTypeToArmy(unitType2, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			req.AddUnitTypeRequirement(unitType3);
			Assert_That__FailsAdding(req, unitType3, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1); 0 × " + unitType3.Name + " (would have 1).");
		}

		[Test]
		public void TestAddingRequirementUnitFailsWithTwoUnitTypesProhibitedAndOtherUnitTypeAlreadyInArmy()
		{
			Army army = new Army(mockRace, "Test", 1000);
			AddUnitOfTypeToArmy(unitType1, army);
			AddUnitOfTypeToArmy(unitType3, army);
			UnitRequiresNoMoreThanNOfUnitTypeRequirement req = new UnitRequiresNoMoreThanNOfUnitTypeRequirement(unitType1);
			req.AddUnitTypeRequirement(unitType2);
			req.AddUnitTypeRequirement(unitType3);
			Assert_That__FailsAdding(req, unitType2, army, "Army cannot contain more than: 0 × " + unitType2.Name + " (would have 1); 0 × " + unitType3.Name + " (would have 1).");
		}
	}
}