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test cases

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This commit is contained in:
Hai Nguyen 2018-09-28 10:00:44 +08:00
parent af993076f1
commit df99b29fb3
1 changed files with 57 additions and 15 deletions
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72
core-kotlin/src/test/kotlin/com/baeldung/kotlin/LoopTest.kt
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@ -10,14 +10,16 @@ class LoopTest {
fun givenLoop_whenBreak_thenComplete() {
var value = 0
for (i in 1..100) {
//break loop without label
for (i in 1..10) {
value = i
if (value == 30)
if (value == 3)
break;
}
assertEquals(value, 30)
assertEquals(value, 3)
//break loop with label
outer_loop@ for (i in 1..10) {
for (j in 1..10) {
value = i * j
@ -29,6 +31,31 @@ class LoopTest {
assertEquals(value, 30)
}
@Test
fun givenLoop_whenContinue_thenComplete() {
var processedList = mutableListOf<Int>()
//continue loop without label
for (i in 1..10) {
if (i == 3)
continue;
processedList.add(i)
}
assert(processedList.all { it -> it != 3 })
//continue loop with label
processedList = mutableListOf<Int>()
outer_loop@ for (i in 1..10) {
for (j in 1..10) {
if (i == 3)
continue@outer_loop;
processedList.add(i*j)
}
}
assertEquals(processedList.size, 90)
}
@Test
fun givenLambda_whenReturn_thenComplete() {
listOf(1, 2, 3, 4, 5).forEach {
@ -44,18 +71,14 @@ class LoopTest {
var result = mutableListOf<Int>();
listOf(1, 2, 3, 4, 5).forEach lit@{
if (it == 3){
if (it == 3) {
// local return to the caller of the lambda, i.e. the forEach loop
return@lit
}
result.add(it)
}
assert(1 in result
&& 2 in result
&& 4 in result
&& 5 in result)
assertFalse(3 in result)
assert(result.all { it -> it != 3 });
}
@Test
@ -63,17 +86,36 @@ class LoopTest {
var result = mutableListOf<Int>();
listOf(1, 2, 3, 4, 5).forEach {
if (it == 3){
if (it == 3) {
// local return to the caller of the lambda, i.e. the forEach loop
return@forEach
}
result.add(it)
}
assert(1 in result
&& 2 in result
&& 4 in result
&& 5 in result)
assertFalse(3 in result)
assert(result.all { it -> it != 3 });
}
@Test
fun givenAnonymousFunction_return_thenComplete() {
var result = mutableListOf<Int>();
listOf(1, 2, 3, 4, 5).forEach(fun(element: Int) {
if (element == 3) return // local return to the caller of the anonymous fun, i.e. the forEach loop
result.add(element);
})
assert(result.all { it -> it != 3 });
}
@Test
fun givenAnonymousFunction_returnToLabel_thenComplete() {
var value = 0;
run loop@{
listOf(1, 2, 3, 4, 5).forEach {
value = it;
if (it == 3) return@loop // non-local return from the lambda passed to run
}
}
assertEquals(value, 3)
}
}