Use idiomatic AssertJ assertions

Replace assertThat(x.isEmpty()).isTrue() with assertThat(x).isEmpty()

Search for : assertThat\((.+).isEmpty\(\)\).isTrue\(\)
Replace with : assertThat($1).isEmpty()

Search for : assertThat\((.+).isEmpty\(\)\).isFalse\(\)
Replace with : assertThat($1).isNotEmpty()

Author: quaff

spring-boot-project/spring-boot-tools/spring-boot-loader-classic/src/test/java/org/springframework/boot/loader/jar/StringSequenceTests.java

@@ -92,12 +92,12 @@ void subSequenceWhenStartPastExistingEndShouldThrowException() {
 
 	@Test
 	void isEmptyWhenEmptyShouldReturnTrue() {
-		assertThat(new StringSequence("").isEmpty()).isTrue();
+		assertThat(new StringSequence("")).isEmpty();
 	}
 
 	@Test
 	void isEmptyWhenNotEmptyShouldReturnFalse() {
-		assertThat(new StringSequence("x").isEmpty()).isFalse();
+		assertThat(new StringSequence("x")).isNotEmpty();
 	}
 
 	@Test