Kotlin mig: moves package

6 files changed, 1173 insertions, 0 deletions

diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/moves/BuildWonderMoveTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/moves/BuildWonderMoveTest.kt
new file mode 100644
index 00000000..ee461e38
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/moves/BuildWonderMoveTest.kt
@@ -0,0 +1,76 @@
+package org.luxons.sevenwonders.game.moves
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.fail
+import org.junit.Test
+import org.luxons.sevenwonders.game.Settings
+import org.luxons.sevenwonders.game.api.Table
+import org.luxons.sevenwonders.game.cards.Card
+import org.luxons.sevenwonders.game.test.createMove
+import org.luxons.sevenwonders.game.test.sampleCards
+import org.luxons.sevenwonders.game.test.testCard
+import org.luxons.sevenwonders.game.test.testSettings
+import org.luxons.sevenwonders.game.test.testTable
+
+class BuildWonderMoveTest {
+
+    @Test(expected = InvalidMoveException::class)
+    fun validate_failsWhenCardNotInHand() {
+        val table = testTable(3)
+        val hand = sampleCards(0, 7)
+        val anotherCard = testCard("Card that is not in the hand")
+        val move = createMove(0, anotherCard, MoveType.UPGRADE_WONDER)
+
+        move.validate(table, hand)
+    }
+
+    @Test(expected = InvalidMoveException::class)
+    fun validate_failsWhenWonderIsCompletelyBuilt() {
+        val settings = testSettings(3)
+        val table = testTable(settings)
+        val hand = sampleCards(0, 7)
+
+        fillPlayerWonderLevels(settings, table, hand)
+
+        // should fail because the wonder is already full
+        buildOneWonderLevel(settings, table, hand, 4)
+    }
+
+    private fun fillPlayerWonderLevels(settings: Settings, table: Table, hand: List<Card>) {
+        try {
+            val nbLevels = table.getBoard(0).wonder.stages.size
+            for (i in 0 until nbLevels) {
+                buildOneWonderLevel(settings, table, hand, i)
+            }
+        } catch (e: InvalidMoveException) {
+            fail("Building wonder levels should not fail before being full")
+        }
+    }
+
+    private fun buildOneWonderLevel(settings: Settings, table: Table, hand: List<Card>, cardIndex: Int) {
+        val card = hand[cardIndex]
+        val move = createMove(0, card, MoveType.UPGRADE_WONDER)
+        move.validate(table, hand)
+        move.place(table, mutableListOf(), settings)
+        move.activate(table, emptyList(), settings)
+    }
+
+    @Test
+    fun place_increasesWonderLevel() {
+        val settings = testSettings(3)
+        val table = testTable(settings)
+        val hand = sampleCards(0, 7)
+        val cardToUse = hand[0]
+        val move = createMove(0, cardToUse, MoveType.UPGRADE_WONDER)
+        move.validate(table, hand) // should not fail
+
+        val initialStage = table.getBoard(0).wonder.nbBuiltStages
+
+        move.place(table, mutableListOf(), settings)
+
+        val newStage = table.getBoard(0).wonder.nbBuiltStages
+
+        // we need to see the level increase before activation so that other players
+        assertEquals((initialStage + 1).toLong(), newStage.toLong())
+    }
+}
diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/BestPriceCalculatorTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/BestPriceCalculatorTest.kt
new file mode 100644
index 00000000..f4cf5294
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/BestPriceCalculatorTest.kt
@@ -0,0 +1,129 @@
+package org.luxons.sevenwonders.game.resources
+
+import java.util.Arrays
+
+import org.junit.Test
+import org.luxons.sevenwonders.game.api.Table
+import org.luxons.sevenwonders.game.boards.Board
+import org.luxons.sevenwonders.game.test.*
+
+import org.junit.Assert.assertEquals
+import org.luxons.sevenwonders.game.resources.Provider.LEFT_PLAYER
+import org.luxons.sevenwonders.game.resources.Provider.RIGHT_PLAYER
+import org.luxons.sevenwonders.game.resources.ResourceType.CLAY
+import org.luxons.sevenwonders.game.resources.ResourceType.GLASS
+import org.luxons.sevenwonders.game.resources.ResourceType.ORE
+import org.luxons.sevenwonders.game.resources.ResourceType.STONE
+import org.luxons.sevenwonders.game.resources.ResourceType.WOOD
+
+class BestPriceCalculatorTest {
+
+    @Test
+    fun bestPrice_0forEmptyResources() {
+        val table = testTable(3)
+        val resources = Resources()
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 0).toLong())
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 0))
+    }
+
+    @Test
+    fun bestPrice_fixedResources_defaultCost() {
+        val left = testBoard(STONE)
+        val main = testBoard(STONE)
+        val right = testBoard(WOOD)
+        val table = Table(Arrays.asList(main, right, left))
+
+        val resources = createResources(STONE, STONE)
+        assertEquals(2, BestPriceCalculator.bestPrice(resources, table, 0).toLong())
+        assertEquals(4, BestPriceCalculator.bestPrice(resources, table, 1).toLong())
+        assertEquals(2, BestPriceCalculator.bestPrice(resources, table, 2).toLong())
+
+        val stoneLeftSingle = createTransaction(LEFT_PLAYER, STONE)
+        val stoneRightSingle = createTransaction(RIGHT_PLAYER, STONE)
+
+        val stoneLeft = createTransactions(stoneLeftSingle)
+        val stoneRight = createTransactions(stoneRightSingle)
+        val stoneLeftAndRight = createTransactions(stoneLeftSingle, stoneRightSingle)
+
+        assertEquals(stoneLeft, BestPriceCalculator.bestSolution(resources, table, 0))
+        assertEquals(stoneLeftAndRight, BestPriceCalculator.bestSolution(resources, table, 1))
+        assertEquals(stoneRight, BestPriceCalculator.bestSolution(resources, table, 2))
+    }
+
+    @Test
+    fun bestPrice_fixedResources_overridenCost() {
+        val main = testBoard(STONE)
+        main.tradingRules.setCost(WOOD, RIGHT_PLAYER, 1)
+
+        val left = testBoard(WOOD)
+        val right = testBoard(WOOD)
+        val opposite = testBoard(GLASS)
+        val table = Table(Arrays.asList(main, right, opposite, left))
+
+        val resources = createResources(WOOD)
+        assertEquals(1, BestPriceCalculator.bestPrice(resources, table, 0).toLong())
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 1).toLong())
+        assertEquals(2, BestPriceCalculator.bestPrice(resources, table, 2).toLong())
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 3).toLong())
+
+        val woodLeft = createTransactions(LEFT_PLAYER, WOOD)
+        val woodRight = createTransactions(RIGHT_PLAYER, WOOD)
+        assertEquals(woodRight, BestPriceCalculator.bestSolution(resources, table, 0))
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 1))
+        assertEquals(woodLeft, BestPriceCalculator.bestSolution(resources, table, 2))
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 3))
+    }
+
+    @Test
+    fun bestPrice_mixedResources_overridenCost() {
+        val left = testBoard(WOOD)
+
+        val main = testBoard(STONE)
+        main.tradingRules.setCost(WOOD, RIGHT_PLAYER, 1)
+
+        val right = testBoard(ORE)
+        right.production.addChoice(WOOD, CLAY)
+        right.publicProduction.addChoice(WOOD, CLAY)
+
+        val table = Table(Arrays.asList(main, right, left))
+
+        val resources = createResources(WOOD)
+        assertEquals(1, BestPriceCalculator.bestPrice(resources, table, 0).toLong())
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 1).toLong())
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 2).toLong())
+
+        val woodRight = createTransactions(RIGHT_PLAYER, WOOD)
+
+        assertEquals(woodRight, BestPriceCalculator.bestSolution(resources, table, 0))
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 1))
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 2))
+    }
+
+    @Test
+    fun bestPrice_chooseCheapest() {
+        val left = testBoard(WOOD)
+
+        val main = testBoard(WOOD)
+        main.production.addChoice(CLAY, ORE)
+        main.tradingRules.setCost(CLAY, RIGHT_PLAYER, 1)
+
+        val right = testBoard(WOOD)
+        right.production.addFixedResource(ORE, 1)
+        right.production.addFixedResource(CLAY, 1)
+        right.publicProduction.addFixedResource(ORE, 1)
+        right.publicProduction.addFixedResource(CLAY, 1)
+
+        val table = Table(Arrays.asList(main, right, left))
+
+        val resources = createResources(ORE, CLAY)
+        assertEquals(1, BestPriceCalculator.bestPrice(resources, table, 0).toLong())
+        assertEquals(0, BestPriceCalculator.bestPrice(resources, table, 1).toLong())
+        assertEquals(4, BestPriceCalculator.bestPrice(resources, table, 2).toLong())
+
+        val oreAndClayLeft = createTransactions(LEFT_PLAYER, ORE, CLAY)
+        val clayRight = createTransactions(RIGHT_PLAYER, CLAY)
+        assertEquals(clayRight, BestPriceCalculator.bestSolution(resources, table, 0))
+        assertEquals(ResourceTransactions(), BestPriceCalculator.bestSolution(resources, table, 1))
+        assertEquals(oreAndClayLeft, BestPriceCalculator.bestSolution(resources, table, 2))
+    }
+}
diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ProductionTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ProductionTest.kt
new file mode 100644
index 00000000..27f85c1a
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ProductionTest.kt
@@ -0,0 +1,323 @@
+package org.luxons.sevenwonders.game.resources
+
+import java.util.EnumSet
+import java.util.HashSet
+
+import org.junit.Before
+import org.junit.Test
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+
+class ProductionTest {
+
+    private var emptyResources: Resources? = null
+
+    private var resources1Wood: Resources? = null
+
+    private var resources1Stone: Resources? = null
+
+    private var resources1Stone1Wood: Resources? = null
+
+    private var resources2Stones: Resources? = null
+
+    private var resources2Stones3Clay: Resources? = null
+
+    @Before
+    fun init() {
+        emptyResources = Resources()
+
+        resources1Wood = Resources()
+        resources1Wood!!.add(ResourceType.WOOD, 1)
+
+        resources1Stone = Resources()
+        resources1Stone!!.add(ResourceType.STONE, 1)
+
+        resources1Stone1Wood = Resources()
+        resources1Stone1Wood!!.add(ResourceType.STONE, 1)
+        resources1Stone1Wood!!.add(ResourceType.WOOD, 1)
+
+        resources2Stones = Resources()
+        resources2Stones!!.add(ResourceType.STONE, 2)
+
+        resources2Stones3Clay = Resources()
+        resources2Stones3Clay!!.add(ResourceType.STONE, 2)
+        resources2Stones3Clay!!.add(ResourceType.CLAY, 3)
+    }
+
+    @Test
+    fun contains_newProductionContainsEmpty() {
+        val production = Production()
+        assertTrue(production.contains(emptyResources))
+    }
+
+    @Test
+    fun contains_singleFixedResource_noneAtAll() {
+        val production = Production()
+        assertFalse(production.contains(resources2Stones))
+    }
+
+    @Test
+    fun contains_singleFixedResource_notEnough() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 1)
+        assertFalse(production.contains(resources2Stones))
+    }
+
+    @Test
+    fun contains_singleFixedResource_justEnough() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 2)
+        assertTrue(production.contains(resources2Stones))
+    }
+
+    @Test
+    fun contains_singleFixedResource_moreThanEnough() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 3)
+        assertTrue(production.contains(resources2Stones))
+    }
+
+    @Test
+    fun contains_singleFixedResource_moreThanEnough_amongOthers() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 3)
+        production.addFixedResource(ResourceType.CLAY, 2)
+        assertTrue(production.contains(resources2Stones))
+    }
+
+    @Test
+    fun contains_multipleFixedResources_notEnoughOfOne() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 3)
+        production.addFixedResource(ResourceType.CLAY, 1)
+        assertFalse(production.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun contains_multipleFixedResources_notEnoughOfBoth() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 1)
+        production.addFixedResource(ResourceType.CLAY, 1)
+        assertFalse(production.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun contains_multipleFixedResources_moreThanEnough() {
+        val production = Production()
+        production.addFixedResource(ResourceType.STONE, 3)
+        production.addFixedResource(ResourceType.CLAY, 5)
+        assertTrue(production.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun contains_singleChoice_containsEmpty() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.CLAY)
+        assertTrue(production.contains(emptyResources))
+    }
+
+    @Test
+    fun contains_singleChoice_enough() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        assertTrue(production.contains(resources1Wood))
+        assertTrue(production.contains(resources1Stone))
+    }
+
+    @Test
+    fun contains_multipleChoices_notBoth() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.CLAY)
+        production.addChoice(ResourceType.STONE, ResourceType.CLAY)
+        production.addChoice(ResourceType.STONE, ResourceType.CLAY)
+        assertFalse(production.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun contains_multipleChoices_enough() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun contains_multipleChoices_enoughReverseOrder() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun contains_multipleChoices_moreThanEnough() {
+        val production = Production()
+        production.addChoice(ResourceType.LOOM, ResourceType.GLASS, ResourceType.PAPYRUS)
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun contains_mixedFixedAndChoice_enough() {
+        val production = Production()
+        production.addFixedResource(ResourceType.WOOD, 1)
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun addAll_empty() {
+        val production = Production()
+        production.addAll(emptyResources)
+        assertTrue(production.contains(emptyResources))
+    }
+
+    @Test
+    fun addAll_singleResource() {
+        val production = Production()
+        production.addAll(resources1Stone)
+        assertTrue(production.contains(resources1Stone))
+    }
+
+    @Test
+    fun addAll_multipleResources() {
+        val production = Production()
+        production.addAll(resources2Stones3Clay)
+        assertTrue(production.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun addAll_production_multipleFixedResources() {
+        val production = Production()
+        production.addAll(resources2Stones3Clay)
+
+        val production2 = Production()
+        production2.addAll(production)
+
+        assertTrue(production2.contains(resources2Stones3Clay))
+    }
+
+    @Test
+    fun addAll_production_multipleChoices() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+
+        val production2 = Production()
+        production2.addAll(production)
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun addAll_production_mixedFixedResourcesAndChoices() {
+        val production = Production()
+        production.addFixedResource(ResourceType.WOOD, 1)
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+
+        val production2 = Production()
+        production2.addAll(production)
+
+        assertTrue(production.contains(resources1Stone1Wood))
+    }
+
+    @Test
+    fun asChoices_empty() {
+        val production = Production()
+        assertTrue(production.asChoices().isEmpty())
+    }
+
+    @Test
+    fun asChoices_onlyChoices() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.WOOD)
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+        production.addChoice(ResourceType.CLAY, ResourceType.LOOM, ResourceType.GLASS)
+        assertEquals(production.alternativeResources, production.asChoices())
+    }
+
+    @Test
+    fun asChoices_onlyFixed() {
+        val production = Production()
+        production.addFixedResource(ResourceType.WOOD, 1)
+        production.addFixedResource(ResourceType.CLAY, 2)
+
+        val expected = HashSet<Set<ResourceType>>()
+        expected.add(EnumSet.of(ResourceType.WOOD))
+        expected.add(EnumSet.of(ResourceType.CLAY))
+        expected.add(EnumSet.of(ResourceType.CLAY))
+
+        assertEquals(expected, production.asChoices())
+    }
+
+    @Test
+    fun asChoices_mixed() {
+        val production = Production()
+        production.addChoice(ResourceType.STONE, ResourceType.ORE)
+        production.addChoice(ResourceType.CLAY, ResourceType.LOOM, ResourceType.GLASS)
+        production.addFixedResource(ResourceType.WOOD, 1)
+        production.addFixedResource(ResourceType.CLAY, 2)
+
+        val expected = HashSet<Set<ResourceType>>()
+        expected.add(EnumSet.of(ResourceType.STONE, ResourceType.ORE))
+        expected.add(EnumSet.of(ResourceType.CLAY, ResourceType.LOOM, ResourceType.GLASS))
+        expected.add(EnumSet.of(ResourceType.WOOD))
+        expected.add(EnumSet.of(ResourceType.CLAY))
+        expected.add(EnumSet.of(ResourceType.CLAY))
+
+        assertEquals(expected, production.asChoices())
+    }
+
+    @Test
+    fun equals_falseWhenNull() {
+        val production = Production()
+        production.addFixedResource(ResourceType.GLASS, 1)
+        production.addChoice(ResourceType.ORE, ResourceType.WOOD)
+
+        assertFalse(production == null)
+    }
+
+    @Test
+    fun equals_falseWhenDifferentClass() {
+        val production = Production()
+        production.addFixedResource(ResourceType.GLASS, 1)
+        val resources = Resources()
+        resources.add(ResourceType.GLASS, 1)
+
+        assertFalse(production == resources)
+    }
+
+    @Test
+    fun equals_trueWhenSame() {
+        val production = Production()
+        assertEquals(production, production)
+    }
+
+    @Test
+    fun equals_trueWhenSameContent() {
+        val production1 = Production()
+        val production2 = Production()
+        assertTrue(production1 == production2)
+        production1.addFixedResource(ResourceType.GLASS, 1)
+        production2.addFixedResource(ResourceType.GLASS, 1)
+        assertTrue(production1 == production2)
+        production1.addChoice(ResourceType.ORE, ResourceType.WOOD)
+        production2.addChoice(ResourceType.ORE, ResourceType.WOOD)
+        assertTrue(production1 == production2)
+    }
+
+    @Test
+    fun hashCode_sameWhenSameContent() {
+        val production1 = Production()
+        val production2 = Production()
+        assertEquals(production1.hashCode().toLong(), production2.hashCode().toLong())
+        production1.addFixedResource(ResourceType.GLASS, 1)
+        production2.addFixedResource(ResourceType.GLASS, 1)
+        assertEquals(production1.hashCode().toLong(), production2.hashCode().toLong())
+        production1.addChoice(ResourceType.ORE, ResourceType.WOOD)
+        production2.addChoice(ResourceType.ORE, ResourceType.WOOD)
+        assertEquals(production1.hashCode().toLong(), production2.hashCode().toLong())
+    }
+}
diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourceTransactionsTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourceTransactionsTest.kt
new file mode 100644
index 00000000..11a03cd4
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourceTransactionsTest.kt
@@ -0,0 +1,36 @@
+package org.luxons.sevenwonders.game.resources
+
+import java.util.ArrayList
+import java.util.HashSet
+
+import org.junit.Test
+import org.luxons.sevenwonders.game.test.*
+
+import org.junit.Assert.assertEquals
+
+class ResourceTransactionsTest {
+
+    @Test
+    fun toTransactions() {
+        val transactionList = ArrayList<ResourceTransaction>()
+        transactionList.add(createTransaction(Provider.LEFT_PLAYER, ResourceType.WOOD))
+        transactionList.add(createTransaction(Provider.LEFT_PLAYER, ResourceType.CLAY))
+        transactionList.add(createTransaction(Provider.RIGHT_PLAYER, ResourceType.WOOD))
+
+        val transactions = ResourceTransactions(transactionList)
+
+        val expectedNormalized = HashSet<ResourceTransaction>()
+        expectedNormalized.add(
+            createTransaction(Provider.LEFT_PLAYER, ResourceType.WOOD, ResourceType.CLAY)
+        )
+        expectedNormalized.add(createTransaction(Provider.RIGHT_PLAYER, ResourceType.WOOD))
+
+        assertEquals(expectedNormalized, HashSet(transactions.toTransactions()))
+    }
+
+    @Test(expected = IllegalStateException::class)
+    fun remove_failsIfNoResourceForThatProvider() {
+        val transactions = ResourceTransactions()
+        transactions.remove(Provider.LEFT_PLAYER, Resources.of(ResourceType.WOOD))
+    }
+}
diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourcesTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourcesTest.kt
new file mode 100644
index 00000000..72419fe3
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/ResourcesTest.kt
@@ -0,0 +1,482 @@
+package org.luxons.sevenwonders.game.resources
+
+import org.junit.Assert.*
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.ExpectedException
+import java.util.NoSuchElementException
+
+class ResourcesTest {
+
+    @JvmField
+    @Rule
+    var thrown = ExpectedException.none()
+
+    @Test
+    fun init_shouldBeEmpty() {
+        val resources = Resources()
+        for (resourceType in ResourceType.values()) {
+            assertEquals(0, resources.getQuantity(resourceType).toLong())
+        }
+        assertEquals(0, resources.size().toLong())
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun add_zero() {
+        val resources = Resources()
+        resources.add(ResourceType.CLAY, 0)
+        assertEquals(0, resources.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, resources.size().toLong())
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun add_simple() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 3)
+        assertEquals(3, resources.getQuantity(ResourceType.WOOD).toLong())
+        assertEquals(3, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun add_multipleCallsStacked() {
+        val resources = Resources()
+        resources.add(ResourceType.ORE, 3)
+        resources.add(ResourceType.ORE, 2)
+        assertEquals(5, resources.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(5, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun add_interlaced() {
+        val resources = Resources()
+        resources.add(ResourceType.GLASS, 3)
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.WOOD, 4)
+        resources.add(ResourceType.GLASS, 2)
+        assertEquals(5, resources.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(10, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun remove_some() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 3)
+        resources.remove(ResourceType.WOOD, 2)
+        assertEquals(1, resources.getQuantity(ResourceType.WOOD).toLong())
+        assertEquals(1, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun remove_all() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 3)
+        resources.remove(ResourceType.WOOD, 3)
+        assertEquals(0, resources.getQuantity(ResourceType.WOOD).toLong())
+        assertEquals(0, resources.size().toLong())
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun remove_tooMany() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 2)
+
+        thrown.expect(NoSuchElementException::class.java)
+        resources.remove(ResourceType.WOOD, 3)
+    }
+
+    @Test
+    fun addAll_empty() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val emptyResources = Resources()
+
+        resources.addAll(emptyResources)
+        assertEquals(1, resources.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(3, resources.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.LOOM).toLong())
+        assertEquals(4, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun addAll_zeros() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val emptyResources = Resources()
+        emptyResources.add(ResourceType.STONE, 0)
+        emptyResources.add(ResourceType.CLAY, 0)
+
+        resources.addAll(emptyResources)
+        assertEquals(1, resources.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(3, resources.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.LOOM).toLong())
+        assertEquals(4, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun addAll_same() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val resources2 = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 6)
+
+        resources.addAll(resources2)
+        assertEquals(3, resources.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(9, resources.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.LOOM).toLong())
+        assertEquals(12, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun addAll_overlap() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val resources2 = Resources()
+        resources.add(ResourceType.CLAY, 6)
+        resources.add(ResourceType.ORE, 4)
+
+        resources.addAll(resources2)
+        assertEquals(1, resources.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(9, resources.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(4, resources.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, resources.getQuantity(ResourceType.LOOM).toLong())
+        assertEquals(14, resources.size().toLong())
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun contains_emptyContainsEmpty() {
+        val emptyResources = Resources()
+        val emptyResources2 = Resources()
+        assertTrue(emptyResources.contains(emptyResources2))
+    }
+
+    @Test
+    fun contains_singleTypeContainsEmpty() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+
+        val emptyResources = Resources()
+
+        assertTrue(resources.contains(emptyResources))
+    }
+
+    @Test
+    fun contains_multipleTypesContainsEmpty() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val emptyResources = Resources()
+
+        assertTrue(resources.contains(emptyResources))
+    }
+
+    @Test
+    fun contains_self() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        assertTrue(resources.contains(resources))
+    }
+
+    @Test
+    fun contains_allOfEachType() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.STONE, 1)
+        resources2.add(ResourceType.CLAY, 3)
+
+        assertTrue(resources.contains(resources2))
+    }
+
+    @Test
+    fun contains_someOfEachType() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.STONE, 1)
+        resources2.add(ResourceType.CLAY, 3)
+
+        assertTrue(resources.contains(resources2))
+    }
+
+    @Test
+    fun contains_someOfSomeTypes() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.CLAY, 3)
+
+        assertTrue(resources.contains(resources2))
+    }
+
+    @Test
+    fun contains_allOfSomeTypes() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.CLAY, 4)
+
+        assertTrue(resources.contains(resources2))
+    }
+
+    @Test
+    fun minus_empty() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val emptyResources = Resources()
+
+        val diff = resources.minus(emptyResources)
+        assertEquals(1, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(3, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_self() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val diff = resources.minus(resources)
+        assertEquals(0, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_allOfEachType() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 1)
+        resources.add(ResourceType.CLAY, 3)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.STONE, 1)
+        resources2.add(ResourceType.CLAY, 3)
+
+        val diff = resources.minus(resources2)
+        assertEquals(0, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_someOfEachType() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.STONE, 1)
+        resources2.add(ResourceType.CLAY, 3)
+
+        val diff = resources.minus(resources2)
+        assertEquals(1, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(1, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_someOfSomeTypes() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.CLAY, 3)
+
+        val diff = resources.minus(resources2)
+        assertEquals(2, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(1, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_allOfSomeTypes() {
+        val resources = Resources()
+        resources.add(ResourceType.STONE, 2)
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.CLAY, 4)
+
+        val diff = resources.minus(resources2)
+        assertEquals(2, diff.getQuantity(ResourceType.STONE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.CLAY).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.ORE).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.GLASS).toLong())
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_tooMuchOfExistingType() {
+        val resources = Resources()
+        resources.add(ResourceType.CLAY, 4)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.CLAY, 5)
+
+        val diff = resources.minus(resources2)
+        assertEquals(0, diff.getQuantity(ResourceType.CLAY).toLong())
+    }
+
+    @Test
+    fun minus_someOfAnAbsentType() {
+        val resources = Resources()
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.LOOM, 5)
+
+        val diff = resources.minus(resources2)
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun minus_someOfATypeWithZero() {
+        val resources = Resources()
+        resources.add(ResourceType.LOOM, 0)
+
+        val resources2 = Resources()
+        resources2.add(ResourceType.LOOM, 5)
+
+        val diff = resources.minus(resources2)
+        assertEquals(0, diff.getQuantity(ResourceType.LOOM).toLong())
+    }
+
+    @Test
+    fun isEmpty_noElement() {
+        val resources = Resources()
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun isEmpty_singleZeroElement() {
+        val resources = Resources()
+        resources.add(ResourceType.LOOM, 0)
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun isEmpty_multipleZeroElements() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 0)
+        resources.add(ResourceType.ORE, 0)
+        resources.add(ResourceType.LOOM, 0)
+        assertTrue(resources.isEmpty)
+    }
+
+    @Test
+    fun isEmpty_singleElementMoreThanZero() {
+        val resources = Resources()
+        resources.add(ResourceType.LOOM, 3)
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun isEmpty_mixedZeroAndNonZeroElements() {
+        val resources = Resources()
+        resources.add(ResourceType.WOOD, 0)
+        resources.add(ResourceType.LOOM, 3)
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun isEmpty_mixedZeroAndNonZeroElements_reverseOrder() {
+        val resources = Resources()
+        resources.add(ResourceType.ORE, 3)
+        resources.add(ResourceType.PAPYRUS, 0)
+        assertFalse(resources.isEmpty)
+    }
+
+    @Test
+    fun equals_falseWhenNull() {
+        val resources = Resources()
+        resources.add(ResourceType.GLASS, 1)
+
+        assertFalse(resources == null)
+    }
+
+    @Test
+    fun equals_falseWhenDifferentClass() {
+        val resources = Resources()
+        resources.add(ResourceType.GLASS, 1)
+        val production = Production()
+        production.addFixedResource(ResourceType.GLASS, 1)
+
+        assertFalse(resources == production)
+    }
+
+    @Test
+    fun equals_trueWhenSame() {
+        val resources = Resources()
+        assertEquals(resources, resources)
+    }
+
+    @Test
+    fun equals_trueWhenSameContent() {
+        val resources1 = Resources()
+        val resources2 = Resources()
+        assertTrue(resources1 == resources2)
+        resources1.add(ResourceType.GLASS, 1)
+        resources2.add(ResourceType.GLASS, 1)
+        assertTrue(resources1 == resources2)
+    }
+
+    @Test
+    fun hashCode_sameWhenSameContent() {
+        val resources1 = Resources()
+        val resources2 = Resources()
+        assertEquals(resources1.hashCode().toLong(), resources2.hashCode().toLong())
+        resources1.add(ResourceType.GLASS, 1)
+        resources2.add(ResourceType.GLASS, 1)
+        assertEquals(resources1.hashCode().toLong(), resources2.hashCode().toLong())
+    }
+}
diff --git a/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/TradingRulesTest.kt b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/TradingRulesTest.kt
new file mode 100644
index 00000000..859c997a
--- /dev/null
+++ b/game-engine/src/test/kotlin/org/luxons/sevenwonders/game/resources/TradingRulesTest.kt
@@ -0,0 +1,127 @@
+package org.luxons.sevenwonders.game.resources
+
+import java.util.ArrayList
+
+import org.junit.experimental.theories.DataPoints
+import org.junit.experimental.theories.Theories
+import org.junit.experimental.theories.Theory
+import org.junit.runner.RunWith
+import org.luxons.sevenwonders.game.test.*
+
+import org.junit.Assert.assertEquals
+import org.junit.Assume.assumeTrue
+
+@RunWith(Theories::class)
+class TradingRulesTest {
+
+    @Theory
+    fun setCost_overridesCost(
+        defaultCost: Int, overriddenCost: Int, overriddenProvider: Provider,
+        provider: Provider, type: ResourceType
+    ) {
+        assumeTrue(defaultCost != overriddenCost)
+        assumeTrue(overriddenProvider != provider)
+
+        val rules = TradingRules(defaultCost)
+        rules.setCost(type, overriddenProvider, overriddenCost)
+
+        assertEquals(overriddenCost.toLong(), rules.getCost(type, overriddenProvider).toLong())
+        assertEquals(defaultCost.toLong(), rules.getCost(type, provider).toLong())
+    }
+
+    @Theory
+    fun computeCost_zeroForNoResources(defaultCost: Int) {
+        val rules = TradingRules(defaultCost)
+        assertEquals(0, rules.computeCost(ResourceTransactions()).toLong())
+    }
+
+    @Theory
+    fun computeCost_defaultCostWhenNoOverride(defaultCost: Int, provider: Provider, type: ResourceType) {
+        val rules = TradingRules(defaultCost)
+        val transactions = createTransactions(provider, type)
+        assertEquals(defaultCost.toLong(), rules.computeCost(transactions).toLong())
+    }
+
+    @Theory
+    fun computeCost_twiceDefaultFor2Resources(defaultCost: Int, provider: Provider, type: ResourceType) {
+        val rules = TradingRules(defaultCost)
+        val transactions = createTransactions(provider, type, type)
+        assertEquals((2 * defaultCost).toLong(), rules.computeCost(transactions).toLong())
+    }
+
+    @Theory
+    fun computeCost_overriddenCost(defaultCost: Int, overriddenCost: Int, provider: Provider, type: ResourceType) {
+        val rules = TradingRules(defaultCost)
+        rules.setCost(type, provider, overriddenCost)
+        val transactions = createTransactions(provider, type)
+        assertEquals(overriddenCost.toLong(), rules.computeCost(transactions).toLong())
+    }
+
+    @Theory
+    fun computeCost_defaultCostWhenOverrideOnOtherProviderOrType(
+        defaultCost: Int, overriddenCost: Int,
+        overriddenProvider: Provider,
+        overriddenType: ResourceType, provider: Provider,
+        type: ResourceType
+    ) {
+        assumeTrue(overriddenProvider != provider || overriddenType != type)
+        val rules = TradingRules(defaultCost)
+        rules.setCost(overriddenType, overriddenProvider, overriddenCost)
+        val transactions = createTransactions(provider, type)
+        assertEquals(defaultCost.toLong(), rules.computeCost(transactions).toLong())
+    }
+
+    @Theory
+    fun computeCost_oneDefaultAndOneOverriddenType(
+        defaultCost: Int, overriddenCost: Int,
+        overriddenType: ResourceType, provider: Provider,
+        type: ResourceType
+    ) {
+        assumeTrue(overriddenType != type)
+        val rules = TradingRules(defaultCost)
+        rules.setCost(overriddenType, provider, overriddenCost)
+        val transactions = createTransactions(provider, overriddenType, type)
+        assertEquals((defaultCost + overriddenCost).toLong(), rules.computeCost(transactions).toLong())
+    }
+
+    @Theory
+    fun computeCost_oneDefaultAndOneOverriddenProvider(
+        defaultCost: Int, overriddenCost: Int,
+        overriddenProvider: Provider, provider: Provider,
+        type: ResourceType
+    ) {
+        assumeTrue(overriddenProvider != provider)
+        val rules = TradingRules(defaultCost)
+        rules.setCost(type, overriddenProvider, overriddenCost)
+
+        val boughtResources = ArrayList<ResourceTransaction>(2)
+        boughtResources.add(createTransaction(provider, type))
+        boughtResources.add(createTransaction(overriddenProvider, type))
+
+        assertEquals(
+            (defaultCost + overriddenCost).toLong(),
+            rules.computeCost(ResourceTransactions(boughtResources)).toLong()
+        )
+    }
+
+    companion object {
+
+        @JvmStatic
+        @DataPoints
+        fun costs(): IntArray {
+            return intArrayOf(0, 1, 2)
+        }
+
+        @JvmStatic
+        @DataPoints
+        fun providers(): Array<Provider> {
+            return Provider.values()
+        }
+
+        @JvmStatic
+        @DataPoints
+        fun resourceTypes(): Array<ResourceType> {
+            return ResourceType.values()
+        }
+    }
+}