Add comprehensive unit tests for core classes

src/test/java/com/example/database/UserDatabaseTest.java

@@ -0,0 +1,154 @@
+package com.example.database;
+
+import org.junit.Test;
+import org.junit.Before;
+import static org.junit.Assert.*;
+
+/**
+ * Unit tests for UserDatabase class
+ * Note: These tests verify the methods execute without crashing.
+ * Actual database connections will fail in test environment, which is expected.
+ */
+public class UserDatabaseTest {
+
+    private UserDatabase userDatabase;
+
+    @Before
+    public void setUp() {
+        userDatabase = new UserDatabase();
+    }
+
+    @Test
+    public void testUserDatabaseCreation() {
+        assertNotNull("UserDatabase should be created", userDatabase);
+    }
+
+    @Test
+    public void testAuthenticateUserDoesNotCrash() {
+        // Should handle database connection failure gracefully
+        boolean result = userDatabase.authenticateUser("testuser", "testpass");
+        assertFalse("Authentication should fail without database", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithEmptyUsername() {
+        boolean result = userDatabase.authenticateUser("", "password");
+        assertFalse("Authentication with empty username should fail", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithEmptyPassword() {
+        boolean result = userDatabase.authenticateUser("username", "");
+        assertFalse("Authentication with empty password should fail", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithSpecialCharacters() {
+        // Testing with SQL injection attempt
+        boolean result = userDatabase.authenticateUser("admin' OR '1'='1", "password");
+        assertFalse("Authentication should fail without database", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithQuotes() {
+        boolean result = userDatabase.authenticateUser("test'user", "test'pass");
+        assertFalse("Authentication with quotes should fail without database", result);
+    }
+
+    @Test
+    public void testUpdateUserProfileDoesNotCrash() {
+        // Should handle database connection failure gracefully
+        try {
+            userDatabase.updateUserProfile("1", "test@example.com", "Test User");
+            // If no exception is thrown, test passes
+            assertTrue("Update method should complete", true);
+        } catch (Exception e) {
+            fail("Update method should not throw exception: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testUpdateUserProfileWithEmptyValues() {
+        try {
+            userDatabase.updateUserProfile("", "", "");
+            assertTrue("Update with empty values should complete", true);
+        } catch (Exception e) {
+            fail("Update with empty values should not throw exception");
+        }
+    }
+
+    @Test
+    public void testUpdateUserProfileWithSpecialCharacters() {
+        try {
+            userDatabase.updateUserProfile("1", "test@example.com", "O'Brien");
+            assertTrue("Update with special characters should complete", true);
+        } catch (Exception e) {
+            fail("Update with special characters should not throw exception");
+        }
+    }
+
+    @Test
+    public void testUpdateUserProfileWithLongValues() {
+        String longEmail = "verylongemailaddress" + "@".repeat(10) + "example.com";
+        String longName = "A".repeat(100);
+        try {
+            userDatabase.updateUserProfile("1", longEmail, longName);
+            assertTrue("Update with long values should complete", true);
+        } catch (Exception e) {
+            fail("Update with long values should not throw exception");
+        }
+    }
+
+    @Test
+    public void testDeleteUserDoesNotCrash() {
+        try {
+            userDatabase.deleteUser("1");
+            assertTrue("Delete method should complete", true);
+        } catch (Exception e) {
+            fail("Delete method should not throw exception: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testDeleteUserWithEmptyId() {
+        try {
+            userDatabase.deleteUser("");
+            assertTrue("Delete with empty ID should complete", true);
+        } catch (Exception e) {
+            fail("Delete with empty ID should not throw exception");
+        }
+    }
+
+    @Test
+    public void testDeleteUserWithSpecialCharacters() {
+        try {
+            userDatabase.deleteUser("1' OR '1'='1");
+            assertTrue("Delete with special characters should complete", true);
+        } catch (Exception e) {
+            fail("Delete with special characters should not throw exception");
+        }
+    }
+
+    @Test
+    public void testDeleteUserWithNonNumericId() {
+        try {
+            userDatabase.deleteUser("abc");
+            assertTrue("Delete with non-numeric ID should complete", true);
+        } catch (Exception e) {
+            fail("Delete with non-numeric ID should not throw exception");
+        }
+    }
+
+    @Test
+    public void testMultipleOperationsSequence() {
+        // Test that multiple operations can be called in sequence
+        try {
+            userDatabase.authenticateUser("user1", "pass1");
+            userDatabase.updateUserProfile("1", "email@test.com", "Name");
+            userDatabase.deleteUser("2");
+            assertTrue("Multiple operations should complete", true);
+        } catch (Exception e) {
+            fail("Multiple operations should not throw exception");
+        }
+    }
+}

src/test/java/com/example/ldap/LdapAuthTest.java

@@ -0,0 +1,142 @@
+package com.example.ldap;
+
+import org.junit.Test;
+import org.junit.Before;
+import static org.junit.Assert.*;
+
+/**
+ * Unit tests for LdapAuth class
+ * Note: These tests verify the methods execute without crashing.
+ * Actual LDAP connections will fail in test environment, which is expected.
+ */
+public class LdapAuthTest {
+
+    private LdapAuth ldapAuth;
+
+    @Before
+    public void setUp() {
+        ldapAuth = new LdapAuth();
+    }
+
+    @Test
+    public void testLdapAuthCreation() {
+        assertNotNull("LdapAuth should be created", ldapAuth);
+    }
+
+    @Test
+    public void testAuthenticateUserDoesNotCrash() {
+        // Should handle LDAP connection failure gracefully
+        boolean result = ldapAuth.authenticateUser("testuser", "testpass");
+        assertFalse("Authentication should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithEmptyUsername() {
+        boolean result = ldapAuth.authenticateUser("", "password");
+        assertFalse("Authentication with empty username should fail", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithEmptyPassword() {
+        boolean result = ldapAuth.authenticateUser("username", "");
+        assertFalse("Authentication with empty password should fail", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithBothEmpty() {
+        boolean result = ldapAuth.authenticateUser("", "");
+        assertFalse("Authentication with both empty should fail", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithSpecialCharacters() {
+        // Testing with LDAP injection attempt
+        boolean result = ldapAuth.authenticateUser("admin*", "password");
+        assertFalse("Authentication should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithParentheses() {
+        boolean result = ldapAuth.authenticateUser("user)(uid=*", "pass");
+        assertFalse("Authentication with parentheses should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testAuthenticateUserWithAsterisk() {
+        boolean result = ldapAuth.authenticateUser("*", "*");
+        assertFalse("Authentication with wildcards should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testAuthenticateUserNormalCredentials() {
+        boolean result = ldapAuth.authenticateUser("john.doe", "secretpassword");
+        assertFalse("Authentication should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testGetUserInfoDoesNotCrash() {
+        try {
+            String result = ldapAuth.getUserInfo("testuser");
+            // Should return null or handle error gracefully
+            assertNull("getUserInfo should return null without LDAP server", result);
+        } catch (Exception e) {
+            fail("getUserInfo should not throw exception: " + e.getMessage());
+        }
+    }
+
+    @Test
+    public void testGetUserInfoWithEmptyUserId() {
+        String result = ldapAuth.getUserInfo("");
+        assertNull("getUserInfo with empty ID should return null", result);
+    }
+
+    @Test
+    public void testGetUserInfoWithSpecialCharacters() {
+        String result = ldapAuth.getUserInfo("admin*");
+        assertNull("getUserInfo with special characters should return null", result);
+    }
+
+    @Test
+    public void testGetUserInfoWithWildcard() {
+        String result = ldapAuth.getUserInfo("*");
+        assertNull("getUserInfo with wildcard should return null", result);
+    }
+
+    @Test
+    public void testGetUserInfoWithLdapInjection() {
+        String result = ldapAuth.getUserInfo("admin)(uid=*)");
+        assertNull("getUserInfo with injection attempt should return null", result);
+    }
+
+    @Test
+    public void testGetUserInfoNormalUserId() {
+        String result = ldapAuth.getUserInfo("john.doe");
+        assertNull("getUserInfo should return null without LDAP server", result);
+    }
+
+    @Test
+    public void testMultipleAuthenticationAttempts() {
+        // Test that multiple operations can be called in sequence
+        try {
+            ldapAuth.authenticateUser("user1", "pass1");
+            ldapAuth.authenticateUser("user2", "pass2");
+            ldapAuth.getUserInfo("user1");
+            ldapAuth.getUserInfo("user2");
+            assertTrue("Multiple operations should complete", true);
+        } catch (Exception e) {
+            fail("Multiple operations should not throw exception");
+        }
+    }
+
+    @Test
+    public void testAuthenticateUserWithUnicodeCharacters() {
+        boolean result = ldapAuth.authenticateUser("用户", "密码");
+        assertFalse("Authentication with unicode should fail without LDAP server", result);
+    }
+
+    @Test
+    public void testGetUserInfoWithUnicodeCharacters() {
+        String result = ldapAuth.getUserInfo("用户");
+        assertNull("getUserInfo with unicode should return null without LDAP server", result);
+    }
+}