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Part1 exercise02 (Kozyrev Egor) #8

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a0c7013
exercise 1
Mar 31, 2017
8dcb2f0
reverted changes
Apr 3, 2017
2b3faf2
exercise 2
Apr 3, 2017
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2 changes: 1 addition & 1 deletion src/test/java/lambda/part1/exercise/Lambdas01Exercise.java
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Original file line number Diff line number Diff line change
Expand Up @@ -42,4 +42,4 @@ void findFirstWithAge30() {

assertEquals(person, new Person("name 1", "lastName 2", 30));
}
}
}
34 changes: 25 additions & 9 deletions src/test/java/lambda/part1/exercise/Lambdas02Exercise.java
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Original file line number Diff line number Diff line change
@@ -1,13 +1,17 @@
package lambda.part1.exercise;

import com.google.common.base.Optional;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import data.Person;
import org.junit.jupiter.api.Test;

import java.util.Arrays;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.junit.jupiter.api.Assertions.fail;

class Lambdas02Exercise {
@Test
Expand All @@ -18,13 +22,21 @@ void sortPersonsByAge() {
new Person("name 2", "lastName 1", 30)
};

// TODO use Arrays.sort
Arrays.sort(persons, (o1, o2) -> {
if (o1.getAge() > o2.getAge())
return 1;
else if (o1.getAge() < o2.getAge())
return -1;
else
return 0;
});


assertArrayEquals(persons, new Person[]{
assertThat(persons, is(new Person[]{
new Person("name 3", "lastName 3", 20),
new Person("name 2", "lastName 1", 30),
new Person("name 1", "lastName 2", 40),
});
}));
}

@Test
Expand All @@ -35,10 +47,14 @@ void findFirstWithAge30() {
new Person("name 2", "lastName 1", 30)
);

Person person = null;
final Optional<Person> personOptional =
FluentIterable.from(persons)
.firstMatch(p -> p.getAge() == 30);

// TODO use FluentIterable

assertEquals(person, new Person("name 1", "lastName 2", 30));
if (personOptional.isPresent())
assertThat(personOptional.get(), is(new Person("name 1", "lastName 2", 30)));
else
fail("");
}
}
}