Zalim Bashorov
102 lines
2.6 KiB
Kotlin
102 lines
2.6 KiB
Kotlin
package test.properties.delegation
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import org.junit.Test as test
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import kotlin.test.*
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import kotlin.properties.*
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trait WithBox {
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fun box(): String
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}
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abstract class DelegationTestBase {
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fun doTest(klass: WithBox) {
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assertEquals("OK", klass.box())
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}
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}
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class DelegationTest(): DelegationTestBase() {
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test fun testNotNullVar() {
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doTest(TestNotNullVar("a", "b"))
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}
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test fun testObservablePropertyInChangeSupport() {
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doTest(TestObservablePropertyInChangeSupport())
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}
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test fun testObservableProperty() {
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doTest(TestObservableProperty())
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}
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test fun testVetoableProperty() {
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doTest(TestVetoableProperty())
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}
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}
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public class TestNotNullVar<T>(val a1: String, val b1: T): WithBox {
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var a: String by Delegates.notNull()
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var b by Delegates.notNull<T>()
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override fun box(): String {
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a = a1
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b = b1
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if (a != "a") return "fail: a shouuld be a, but was $a"
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if (b != "b") return "fail: b should be b, but was $b"
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return "OK"
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}
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}
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class TestObservablePropertyInChangeSupport: WithBox, ChangeSupport() {
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var b by property(init = 2)
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var c by property(3)
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override fun box(): String {
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var result = false
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addChangeListener("b", object: ChangeListener {
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public override fun onPropertyChange(event: ChangeEvent) {
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result = true
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}
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})
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addChangeListener("c", object: ChangeListener {
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public override fun onPropertyChange(event: ChangeEvent) {
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result = false
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}
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})
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b = 4
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if (b != 4) return "fail: b != 4"
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if (!result) return "fail: result should be true"
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return "OK"
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}
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}
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class TestObservableProperty: WithBox {
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var result = false
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var b by Delegates.observable(1, {(pd, o, n) -> result = true})
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override fun box(): String {
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b = 4
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if (b != 4) return "fail: b != 4"
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if (!result) return "fail: result should be true"
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return "OK"
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}
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}
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class A(val p: Boolean)
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class TestVetoableProperty: WithBox {
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var result = false
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var b by Delegates.vetoable(A(true), {(pd, o, n) -> result = n.p == true; result})
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override fun box(): String {
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val firstValue = A(true)
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b = firstValue
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if (b != firstValue) return "fail1: b should be firstValue = A(true)"
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if (!result) return "fail2: result should be true"
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b = A(false)
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if (b != firstValue) return "fail3: b should be firstValue = A(true)"
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if (result) return "fail4: result should be false"
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return "OK"
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}
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}
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