Github user andyklimczak commented on a diff in the pull request:
https://github.com/apache/commons-lang/pull/223#discussion_r94201194
--- Diff: src/test/java/org/apache/commons/lang3/StringUtilsTest.java ---
@@ -2563,6 +2563,24 @@ public void testIsAllUpperCase() {
assertFalse(StringUtils.isAllUpperCase("A/C"));
}
+ /**
+ * Test for {@link StringUtils#isMixedCase(CharSequence)}.
+ */
+ @Test
+ public void testIsMixedCase() {
+ assertFalse(StringUtils.isMixedCase(null));
+ assertFalse(StringUtils.isMixedCase(StringUtils.EMPTY));
+ assertFalse(StringUtils.isMixedCase(" "));
+ assertTrue(StringUtils.isMixedCase("aBc"));
+ assertFalse(StringUtils.isMixedCase("abc"));
+ assertFalse(StringUtils.isMixedCase("ABC"));
+ assertFalse(StringUtils.isMixedCase("aBc "));
+ assertFalse(StringUtils.isMixedCase("A c"));
+ assertFalse(StringUtils.isMixedCase("aBc\n"));
+ assertFalse(StringUtils.isMixedCase("A1c"));
+ assertFalse(StringUtils.isMixedCase("a/C"));
--- End diff --
Done, and I added a quick return case to skip going into the loop
unnecessarily because a char sequence of length 1 cannot have both an upper and
lowercase.
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