Add tests for whitespace within CsvSource columns (#2383)

Author: hosuaby

junit-jupiter-params/src/main/java/org/junit/jupiter/params/provider/CsvSource.java

@@ -26,6 +26,9 @@
  * comma-separated values (CSV) from one or more supplied
  * {@linkplain #value CSV lines}.
  *
+ * <p>The column delimiter (defaults to comma) can be customized with either
+ * {@link #delimiter()} or {@link #delimiterString()}.
+ *
  * <p>The supplied values will be provided as arguments to the
  * annotated {@code @ParameterizedTest} method.
  *

junit-jupiter-params/src/test/java/org/junit/jupiter/params/provider/CsvArgumentsProviderTests.java

@@ -97,6 +97,15 @@ void understandsEscapeCharacters() {
 		assertThat(arguments).containsExactly(array("foo or 'bar'", "baz"));
 	}
 
+	@Test
+	void doesNotTrimSpacesInsideQuotes() {
+		CsvSource annotation = csvSource("''", "'   '", "'blank '", "' not blank   '");
+
+		Stream<Object[]> arguments = provideArguments(annotation);
+
+		assertThat(arguments).containsExactly(array(""), array("   "), array("blank "), array(" not blank   "));
+	}
+
 	@Test
 	void providesArgumentsWithCharacterDelimiter() {
 		CsvSource annotation = csvSource().delimiter('|').lines("foo|bar", "bar|foo").build();