Merge pull request #4517 from asturcon/tutorials/titleCase

BAEL-1928 - Convert a string to title case
2018-06-26 22:30:30 +03:00
parent 36dd4888f4 dfbd91a678
commit 07f3ab60fd
3 changed files with 144 additions and 0 deletions
@@ -0,0 +1,70 @@
+package com.baeldung.string;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class TitleCaseConverterUnitTest {
+
+    private static final String TEXT = "tHis IS a tiTLe";
+    private static final String TEXT_EXPECTED = "This Is A Title";
+    private static final String TEXT_EXPECTED_NOT_FULL = "THis IS A TiTLe";
+
+    private static final String TEXT_OTHER_DELIMITERS = "tHis, IS a   tiTLe";
+    private static final String TEXT_EXPECTED_OTHER_DELIMITERS = "This, Is A   Title";
+    private static final String TEXT_EXPECTED_OTHER_DELIMITERS_NOT_FULL = "THis, IS A   TiTLe";
+
+    @Test
+    public void whenConvertingToTitleCaseIterating_thenStringConverted() {
+        assertEquals(TEXT_EXPECTED, TitleCaseConverter.convertToTitleCaseIteratingChars(TEXT));
+    }
+
+    @Test
+    public void whenConvertingToTitleCaseSplitting_thenStringConverted() {
+        assertEquals(TEXT_EXPECTED, TitleCaseConverter.convertToTitleCaseSplitting(TEXT));
+    }
+
+    @Test
+    public void whenConvertingToTitleCaseUsingWordUtilsFull_thenStringConverted() {
+        assertEquals(TEXT_EXPECTED, TitleCaseConverter.convertToTileCaseWordUtilsFull(TEXT));
+    }
+
+    @Test
+    public void whenConvertingToTitleCaseUsingWordUtils_thenStringConvertedOnlyFirstCharacter() {
+        assertEquals(TEXT_EXPECTED_NOT_FULL, TitleCaseConverter.convertToTileCaseWordUtils(TEXT));
+    }
+
+    @Test
+    public void whenConvertingToTitleCaseUsingIcu4j_thenStringConverted() {
+        assertEquals(TEXT_EXPECTED, TitleCaseConverter.convertToTitleCaseIcu4j(TEXT));
+    }
+
+    @Test
+    public void whenConvertingToTitleCaseWithDifferentDelimiters_thenDelimitersKept() {
+        assertEquals(TEXT_EXPECTED_OTHER_DELIMITERS, TitleCaseConverter.convertToTitleCaseIteratingChars(TEXT_OTHER_DELIMITERS));
+        assertEquals(TEXT_EXPECTED_OTHER_DELIMITERS, TitleCaseConverter.convertToTitleCaseSplitting(TEXT_OTHER_DELIMITERS));
+        assertEquals(TEXT_EXPECTED_OTHER_DELIMITERS, TitleCaseConverter.convertToTileCaseWordUtilsFull(TEXT_OTHER_DELIMITERS));
+        assertEquals(TEXT_EXPECTED_OTHER_DELIMITERS_NOT_FULL, TitleCaseConverter.convertToTileCaseWordUtils(TEXT_OTHER_DELIMITERS));
+        assertEquals(TEXT_EXPECTED_OTHER_DELIMITERS, TitleCaseConverter.convertToTitleCaseIcu4j(TEXT_OTHER_DELIMITERS));
+    }
+
+    @Test
+    public void givenNull_whenConvertingToTileCase_thenReturnNull() {
+        assertEquals(null, TitleCaseConverter.convertToTitleCaseIteratingChars(null));
+        assertEquals(null, TitleCaseConverter.convertToTitleCaseSplitting(null));
+        assertEquals(null, TitleCaseConverter.convertToTileCaseWordUtilsFull(null));
+        assertEquals(null, TitleCaseConverter.convertToTileCaseWordUtils(null));
+        assertEquals(null, TitleCaseConverter.convertToTitleCaseIcu4j(null));
+    }
+
+    @Test
+    public void givenEmptyString_whenConvertingToTileCase_thenReturnEmptyString() {
+        assertEquals("", TitleCaseConverter.convertToTitleCaseIteratingChars(""));
+        assertEquals("", TitleCaseConverter.convertToTitleCaseSplitting(""));
+        assertEquals("", TitleCaseConverter.convertToTileCaseWordUtilsFull(""));
+        assertEquals("", TitleCaseConverter.convertToTileCaseWordUtils(""));
+        assertEquals("", TitleCaseConverter.convertToTitleCaseIcu4j(""));
+    }
+
+}