+41
-0
lines changedFilter options
+41
-0
lines changed Original file line number Diff line number Diff line change
@@ -193,6 +193,27 @@ class Inventory<T>(
193 193 194 194
return isOK
195 195
}
196 + 197 +
/**
198 +
* Transfer [item] with [quantity] amount from [other] to this inventory.
199 +
*
200 +
* @return true if operation was successful
201 +
*/
202 +
@JvmOverloads fun transferFrom(other: Inventory<T>, item: T, quantity: Int = 1): Boolean {
203 +
if (isFull)
204 +
return false
205 + 206 +
if (!other.hasItem(item))
207 +
return false
208 + 209 +
if (other.getItemQuantity(item) < quantity)
210 +
return false
211 + 212 +
add(item, quantity = quantity)
213 +
other.incrementQuantity(item, -quantity)
214 + 215 +
return true
216 +
}
196 217
}
197 218 198 219
class ItemData<T> internal constructor(var userItem: T) {
@@ -238,4 +238,24 @@ class InventoryTest {
238 238 239 239
assertTrue(inventory.incrementQuantity("Hello", -10))
240 240
}
241 + 242 +
@Test
243 +
fun `Transfer from another inventory`() {
244 +
inventory = Inventory(5)
245 + 246 +
inventory.add("Hello", quantity = 5)
247 + 248 +
val other = Inventory<String>(6)
249 + 250 +
var result = other.transferFrom(inventory, "Hello", 4)
251 + 252 +
assertTrue(result)
253 +
assertThat(other.getItemQuantity("Hello"), `is`(4))
254 +
assertThat(inventory.getItemQuantity("Hello"), `is`(1))
255 + 256 +
// quantity only 1, so cannot transfer
257 +
result = other.transferFrom(inventory, "Hello", 4)
258 + 259 +
assertFalse(result)
260 +
}
241 261
}
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