Polish contribution

See gh-25532

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/properties/source/MockConfigurationPropertySource.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

spring-boot-project/spring-boot/src/test/kotlin/org/springframework/boot/context/properties/bind/KotlinConstructorParametersBinderTests.kt

@@ -26,7 +26,7 @@ class KotlinConstructorParametersBinderTests {
 		val bean = binder.bind("foo", Bindable.of(ExampleValueBean::class.java)).get()
 		assertThat(bean.intValue).isEqualTo(12)
 		assertThat(bean.longValue).isEqualTo(34)
-		assertThat(bean.booleanValue).isTrue
+		assertThat(bean.booleanValue).isTrue()
 		assertThat(bean.stringValue).isEqualTo("foo")
 		assertThat(bean.enumValue).isEqualTo(ExampleEnum.FOO_BAR)
 	}
@@ -43,7 +43,7 @@ class KotlinConstructorParametersBinderTests {
 				Bindable.of(ExampleValueBean::class.java)).get()
 		assertThat(bean.intValue).isEqualTo(12)
 		assertThat(bean.longValue).isEqualTo(34)
-		assertThat(bean.booleanValue).isTrue
+		assertThat(bean.booleanValue).isTrue()
 		assertThat(bean.stringValue).isEqualTo("foo")
 		assertThat(bean.enumValue).isEqualTo(ExampleEnum.FOO_BAR)
 	}
@@ -71,7 +71,7 @@ class KotlinConstructorParametersBinderTests {
 		val binder = Binder(source)
 		val bindable = binder.bind("foo", Bindable.of(
 				MultipleConstructorsWithPrimaryConstructorBean::class.java))
-		assertThat(bindable.isBound).isTrue
+		assertThat(bindable.isBound).isTrue()
 		assertThat(bindable.get().intValue).isEqualTo(12)
 	}
 
@@ -81,7 +81,7 @@ class KotlinConstructorParametersBinderTests {
 		val binder = Binder(source)
 		val bindable = binder.bind("foo", Bindable.of(
 				MultipleConstructorsBean::class.java))
-		assertThat(bindable.isBound).isFalse
+		assertThat(bindable.isBound).isFalse()
 	}
 
 	@Test
@@ -90,7 +90,7 @@ class KotlinConstructorParametersBinderTests {
 		val binder = Binder(source)
 		val bindable = binder.bind("foo", Bindable.of(
 				DefaultConstructorBean::class.java))
-		assertThat(bindable.isBound).isFalse
+		assertThat(bindable.isBound).isFalse()
 	}
 
 	@Test
@@ -103,7 +103,7 @@ class KotlinConstructorParametersBinderTests {
 		val bean = binder.bind("foo", Bindable.of(ExampleNestedBean::class.java)).get()
 		assertThat(bean.valueBean.intValue).isEqualTo(123)
 		assertThat(bean.valueBean.longValue).isEqualTo(34)
-		assertThat(bean.valueBean.booleanValue).isTrue
+		assertThat(bean.valueBean.booleanValue).isTrue()
 		assertThat(bean.valueBean.stringValue).isEqualTo("foo")
 		assertThat(bean.valueBean.enumValue).isNull()
 	}
@@ -129,7 +129,7 @@ class KotlinConstructorParametersBinderTests {
 				ExamplePrimitiveDefaultBean::class.java)).get()
 		assertThat(bean.intValue).isEqualTo(0)
 		assertThat(bean.longValue).isEqualTo(0)
-		assertThat(bean.booleanValue).isFalse
+		assertThat(bean.booleanValue).isFalse()
 		assertThat(bean.stringValue).isEqualTo("foo")
 		assertThat(bean.enumValue).isNull()
 	}
@@ -139,7 +139,7 @@ class KotlinConstructorParametersBinderTests {
 		val source = MockConfigurationPropertySource("foo.string-value", "foo")
 		val binder = Binder(source)
 		assertThat(binder.bind("foo", Bindable.of(
-				ExampleDefaultValueBean::class.java)).isBound).isFalse
+				ExampleDefaultValueBean::class.java)).isBound).isFalse()
 	}
 
 	@Test
@@ -244,4 +244,5 @@ class KotlinConstructorParametersBinderTests {
 	object ExampleSingletonBean {
 		var stringValue: String? = null
 	}
+
 }
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