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Override toString function in stdlib delegates

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Co-authored-by: ilya-g <ilya.gorbunov@jetbrains.com>
This commit is contained in:
Iaroslav Postovalov
2021-01-02 18:51:37 +07:00
committed by Space Team
parent cfa06dbf74
commit fb80c0cb0d
7 changed files with 22 additions and 3 deletions
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libraries/stdlib/test/properties/delegation/DelegationTest.kt
+9 -3
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@@ -16,30 +16,36 @@ class NotNullVarTest() {
private class NotNullVarTestGeneric<T : Any>(val a1: String, val b1: T) {
var a: String by Delegates.notNull()
var b by Delegates.notNull<T>()
val bDelegate = Delegates.notNull<T>()
var b by bDelegate
public fun doTest() {
assertEquals("NotNullProperty(value not initialized yet)", bDelegate.toString())
a = a1
b = b1
assertTrue(a == "a", "fail: a should be a, but was $a")
assertTrue(b == "b", "fail: b should be b, but was $b")
assertEquals("NotNullProperty(value=$b)", bDelegate.toString())
}
}
class ObservablePropertyTest {
var result = false
var b: Int by Delegates.observable(1, { property, old, new ->
val bDelegate = Delegates.observable(1) { property, old, new ->
assertEquals("b", property.name)
if (!result) assertEquals(1, old)
result = true
assertEquals(new, b, "New value has already been set")
})
}
var b: Int by bDelegate
@Test fun doTest() {
b = 4
assertTrue(b == 4, "fail: b != 4")
assertTrue(result, "fail: result should be true")
assertEquals("ObservableProperty(value=$b)", bDelegate.toString())
}
}