[Improve] add CommonUtil unit test (#2346)

Co-authored-by: tomsun28 <[email protected]>

common/src/test/java/org/apache/hertzbeat/common/util/CommonUtilTest.java

@@ -19,14 +19,53 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
+import java.util.HashMap;
+import java.util.Map;
 import org.junit.jupiter.api.Test;
 
 /**
  * Test case for {@link CommonUtil}
  */
 class CommonUtilTest {
 
+    @Test
+    void testParseStrInteger() {
+        assertEquals(10, CommonUtil.parseStrInteger("10"));
+        assertEquals(-10, CommonUtil.parseStrInteger("-10"));
+        assertEquals(+10, CommonUtil.parseStrInteger("+10"));
+        assertNotEquals(10_000, CommonUtil.parseStrInteger("10_000"));
+        assertNotEquals(16, CommonUtil.parseStrInteger("0x10"));
+    }
+
+    @Test
+    void testParseStrDouble() {
+        assertEquals(10.125, CommonUtil.parseStrDouble("10.125"));
+        assertEquals(-10.125, CommonUtil.parseStrDouble("-10.125"));
+        assertEquals(100, CommonUtil.parseStrDouble("100d"));
+        assertEquals(100000, CommonUtil.parseStrDouble("100E3"));
+        assertEquals(0.1, CommonUtil.parseStrDouble("100E-3"));
+        assertNotEquals(10_000.125, CommonUtil.parseStrDouble("10_000.125"));
+    }
+
+    @Test
+    void testParseIsNumeric() {
+        assertTrue(CommonUtil.isNumeric("1234"));
+        assertTrue(CommonUtil.isNumeric("6.954"));
+        assertFalse(CommonUtil.isNumeric("296.347%"));
+        assertFalse(CommonUtil.isNumeric("445_126"));
+    }
+
+    @Test
+    void testParseTimeStrToSecond() {
+        assertEquals(36000, CommonUtil.parseTimeStrToSecond("10:00"));
+        assertEquals(43800, CommonUtil.parseTimeStrToSecond("12:10:00"));
+        assertNotEquals(43800, CommonUtil.parseTimeStrToSecond("2024-07-23 12:10:00"));
+    }
+
     @Test
     void testParseDoubleStr() {
         assertEquals("9.3454", CommonUtil.parseDoubleStr("9.345435345", null));
@@ -54,4 +93,60 @@ void validatePhoneNum() {
         assertFalse(CommonUtil.validatePhoneNum("46234554432"));
     }
 
+    @Test
+    void testGetMessageFromThrowable() {
+        assertEquals("throwable is null, unknown error.", CommonUtil.getMessageFromThrowable(null));
+        assertEquals("throwable cause message", CommonUtil.getMessageFromThrowable(new Throwable(new Throwable("throwable cause message"))));
+        assertEquals("throwable message", CommonUtil.getMessageFromThrowable(new Throwable("throwable message")));
+        assertEquals("throwable localizedMessage", CommonUtil.getMessageFromThrowable(new Throwable() {
+            @Override
+            public String getLocalizedMessage() {
+                return "throwable localizedMessage";
+            }
+        }));
+        assertEquals("throwable toString", CommonUtil.getMessageFromThrowable(new Throwable() {
+            @Override
+            public String getMessage() {
+                return null;
+            }
+
+            @Override
+            public String toString() {
+                return "throwable toString";
+            }
+        }));
+        assertEquals("unknown error.", CommonUtil.getMessageFromThrowable(new Throwable() {
+            @Override
+            public String getMessage() {
+                return null;
+            }
+
+            @Override
+            public String toString() {
+                return null;
+            }
+        }));
+    }
+
+    @Test
+    void testRemoveBlankLine() {
+        assertEquals("line1\nline2\nline3", CommonUtil.removeBlankLine("line1\nline2\nline3"));
+        assertEquals("line1\nline3\nline4\nline6", CommonUtil.removeBlankLine("line1\n\nline3\nline4\n\n\nline6"));
+        assertEquals("", CommonUtil.removeBlankLine(""));
+        assertEquals("", CommonUtil.removeBlankLine("\n\n\n\n"));
+    }
+
+    @Test
+    void testGetLangMappingValueFromI18nMap() {
+        Map<String, String> i18nMap = new HashMap<>();
+        i18nMap.put("zh-CN", "中文");
+        i18nMap.put("ja", null);
+        i18nMap.put("en-US", "English");
+        assertEquals("中文", CommonUtil.getLangMappingValueFromI18nMap("zh-CN", i18nMap));
+        assertEquals("English", CommonUtil.getLangMappingValueFromI18nMap("en-US", i18nMap));
+        assertNull(CommonUtil.getLangMappingValueFromI18nMap("zh", new HashMap<>()));
+        assertNotNull(CommonUtil.getLangMappingValueFromI18nMap("ja", i18nMap));
+        assertNotNull(CommonUtil.getLangMappingValueFromI18nMap("zh-TW", i18nMap));
+    }
+
 }