update basics

realDuYuanChao · realDuYuanChao · commit c14c5e18a369 · 2021-11-06T10:54:57.000+08:00
diff --git a/src/test/java/com/examplehub/basics/chars/CharExampleTest.java b/src/test/java/com/examplehub/basics/chars/CharExampleTest.java
@@ -32,4 +32,63 @@ void testAddAndSub() {
     assertEquals(9, '9' - '0');
     assertEquals(0, 'a' - 97);
   }
+
+  @Test
+  void testValueOf() {
+    Character c = Character.valueOf('A');
+    assertEquals('A', c.charValue());
+  }
+
+  @Test
+  void testAutoboxing() {
+    Character c = 'A';
+    System.out.println(c);
+    assertEquals('A', c);
+  }
+
+  @Test
+  void testIsLower() {
+    assertFalse(Character.isLowerCase('A'));
+    assertTrue(Character.isLowerCase('a'));
+    assertFalse(Character.isLowerCase('1'));
+  }
+
+  @Test
+  void testIsUpper() {
+    assertTrue(Character.isUpperCase('A'));
+    assertFalse(Character.isUpperCase('a'));
+    assertFalse(Character.isUpperCase('1'));
+  }
+
+  @Test
+  void testIsDigit() {
+    System.out.println(Character.isDigit('A'));
+    System.out.println(Character.isDigit('a'));
+    System.out.println(Character.isDigit('1'));
+
+    assertFalse(Character.isDigit('A'));
+    assertFalse(Character.isDigit('a'));
+    assertTrue(Character.isDigit('1'));
+  }
+
+  @Test
+  void testToLower() {
+    assertEquals('a', Character.toLowerCase('A'));
+  }
+
+  @Test
+  void testToUpper() {
+    assertEquals('A', Character.toUpperCase('a'));
+  }
+
+  @Test
+  void testGetNumericValue() {
+    System.out.println(Character.getNumericValue('8'));
+    assertEquals(8, Character.getNumericValue('8'));
+
+    System.out.println(Character.getNumericValue('A'));
+    System.out.println(Character.getNumericValue('a'));
+    assertEquals(10, Character.getNumericValue('A'));
+    assertEquals(10, Character.getNumericValue('a'));
+  }
 }
diff --git a/src/test/java/com/examplehub/basics/utils/MathUtilsExampleTest.java b/src/test/java/com/examplehub/basics/utils/MathUtilsExampleTest.java
@@ -51,4 +51,11 @@ void testRandom() {
     double randomNumber = Math.random();
     assertTrue(randomNumber >= 0 && randomNumber < 1);
   }
+
+  @Test
+  void testRound() {
+    assertEquals(3, Math.round(3.14));
+    assertEquals(4, Math.round(3.78));
+    assertEquals(-3, Math.round(-3.14));
+  }
 }

Original file line number	Diff line number	Diff line change
`@@ -51,4 +51,11 @@ void testRandom() {`
`51`	`51`	`double randomNumber = Math.random();`
`52`	`52`	`assertTrue(randomNumber >= 0 && randomNumber < 1);`
`53`	`53`	`}`
	`54`	`+`
	`55`	`+ @Test`
	`56`	`+ void testRound() {`
	`57`	`+ assertEquals(3, Math.round(3.14));`
	`58`	`+ assertEquals(4, Math.round(3.78));`
	`59`	`+ assertEquals(-3, Math.round(-3.14));`
	`60`	`+ }`
`54`	`61`	`}`