Untangle CartesianTestNameFormatter (#382 / #533)

CartesianTestNameFormatter no longer references constants used by
Jupiter's ParameterizedTest.

Closes: #382
PR: #533

src/main/java/org/junitpioneer/jupiter/cartesian/CartesianTest.java

@@ -49,7 +49,6 @@
  * <a href="https://junit-pioneer.org/docs/cartesian-product/" target="_top">the documentation on <code>@CartesianTest</code></a>.
  * </p>
  *
- * @see org.junitpioneer.jupiter.CartesianValueSource
  * @since 1.5.0
  */
 @TestTemplate
@@ -58,6 +57,33 @@
 @Retention(RetentionPolicy.RUNTIME)
 public @interface CartesianTest {
 
+	/**
+	 * Placeholder for the display name of a {@code @CartesianTest}
+	 *
+	 * @since 1.5
+	 * @see #name
+	 */
+	String DISPLAY_NAME_PLACEHOLDER = "{displayName}";
+
+	/**
+	 * Placeholder for the current invocation index of a {@code @CartesianTest}
+	 * method (1-based): <code>{index}</code>
+	 *
+	 * @since 1.5
+	 * @see #name
+	 */
+	String INDEX_PLACEHOLDER = "{index}";
+
+	/**
+	 * Placeholder for the complete, comma-separated arguments list of the
+	 * current invocation of a {@code @CartesianTest} method:
+	 * <code>{arguments}</code>
+	 *
+	 * @since 1.5
+	 * @see #name
+	 */
+	String ARGUMENTS_PLACEHOLDER = "{arguments}";
+
 	/**
 	 * <p>The display name to be used for individual invocations of the
 	 * parameterized test; never blank or consisting solely of whitespace.

src/main/java/org/junitpioneer/jupiter/cartesian/CartesianTestNameFormatter.java

@@ -11,9 +11,9 @@
 package org.junitpioneer.jupiter.cartesian;
 
 import static java.util.stream.Collectors.joining;
-import static org.junit.jupiter.params.ParameterizedTest.ARGUMENTS_PLACEHOLDER;
-import static org.junit.jupiter.params.ParameterizedTest.DISPLAY_NAME_PLACEHOLDER;
-import static org.junit.jupiter.params.ParameterizedTest.INDEX_PLACEHOLDER;
+import static org.junitpioneer.jupiter.cartesian.CartesianTest.ARGUMENTS_PLACEHOLDER;
+import static org.junitpioneer.jupiter.cartesian.CartesianTest.DISPLAY_NAME_PLACEHOLDER;
+import static org.junitpioneer.jupiter.cartesian.CartesianTest.INDEX_PLACEHOLDER;
 
 import java.text.MessageFormat;
 import java.util.Arrays;