parameterized tests

pom.xml

@@ -5,7 +5,7 @@
     <groupId>com.cedarsoftware</groupId>
     <artifactId>java-util</artifactId>
     <packaging>jar</packaging>
-    <version>2.4.1</version>
+    <version>2.5.0-SNAPSHOT</version>
     <description>Java Utilities</description>
     <url>https://github.com/jdereg/java-util</url>
 

src/test/java/com/cedarsoftware/util/convert/CharacterConversionsTests.java

@@ -0,0 +1,45 @@
+package com.cedarsoftware.util.convert;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.NullSource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class CharacterConversionsTests {
+
+    private Converter converter;
+
+    @BeforeEach
+    void beforeEach() {
+        this.converter = new Converter(new DefaultConverterOptions());
+    }
+
+    @ParameterizedTest
+    @NullSource
+    void toByteObject_whenCharacterIsNull_returnsNull(Character ch) {
+        assertThat(this.converter.convert(ch, Byte.class))
+                .isNull();
+    }
+
+    @ParameterizedTest
+    @NullSource
+    void toByte_whenCharacterIsNull_returnsCommonValuesZero(Character ch) {
+        assertThat(this.converter.convert(ch, byte.class))
+                .isSameAs(CommonValues.BYTE_ZERO);
+    }
+
+    @ParameterizedTest
+    @NullSource
+    void toIntObject_whenCharacterIsNull_returnsNull(Character ch) {
+        assertThat(this.converter.convert(ch, Integer.class))
+                .isNull();
+    }
+
+    @ParameterizedTest
+    @NullSource
+    void toInteger_whenCharacterIsNull_returnsCommonValuesZero(Character ch) {
+        assertThat(this.converter.convert(ch, int.class))
+                .isSameAs(CommonValues.INTEGER_ZERO);
+    }
+}