added QueryBuilder tests

Author: KDesp73

pom.xml

@@ -52,6 +52,15 @@
 		<maven.compiler.target>23</maven.compiler.target>
 	</properties>
 
+	<dependencies>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-api</artifactId>
+			<version>5.8.2</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
 	<build>
 		<plugins>
 			<plugin>

src/test/java/io/github/kdesp73/databridge/helpers/QueryBuilderTest.java

@@ -0,0 +1,87 @@
+package io.github.kdesp73.databridge.helpers;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class QueryBuilderTest {
+
+    @Test
+    void select() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.select("col1", "col2").build();
+        assertEquals("SELECT col1, col2", query, "SELECT query with columns failed.");
+    }
+
+    @Test
+    void selectAll() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.select().build();
+        assertEquals("SELECT *", query, "SELECT * query failed.");
+    }
+
+    @Test
+    void from() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.select("col1").from("my_table").build();
+        assertEquals("SELECT col1 FROM my_table", query, "FROM clause failed.");
+    }
+
+    @Test
+    void where() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.select("*").from("my_table").where("col1 = 1").build();
+        assertEquals("SELECT * FROM my_table WHERE col1 = 1", query, "WHERE clause failed.");
+    }
+
+    @Test
+    void insertInto() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.insertInto("my_table").columns("col1", "col2").values("val1", 123).build();
+        assertEquals("INSERT INTO my_table (col1, col2) VALUES ('val1', 123)", query, "INSERT INTO query failed.");
+    }
+
+    @Test
+    void update() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.update("my_table").set("col1", "new_value").build();
+        assertEquals("UPDATE my_table SET col1 = 'new_value'", query, "UPDATE query failed.");
+    }
+
+    @Test
+    void updateWithNumericValue() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.update("my_table").set("col1", 42).build();
+        assertEquals("UPDATE my_table SET col1 = 42", query, "UPDATE query with numeric value failed.");
+    }
+
+    @Test
+    void deleteFrom() {
+        QueryBuilder qb = new QueryBuilder();
+        String query = qb.deleteFrom("my_table").where("col1 = 1").build();
+        assertEquals("DELETE FROM my_table WHERE col1 = 1", query, "DELETE query failed.");
+    }
+
+    @Test
+    void reset() {
+        QueryBuilder qb = new QueryBuilder();
+        qb.select("*").from("my_table");
+        qb.reset();
+        assertThrows(IllegalStateException.class, qb::build, "Reset did not clear the query builder.");
+    }
+
+    @Test
+    void buildWithoutReset() {
+        QueryBuilder qb = new QueryBuilder();
+        qb.select("*").from("my_table");
+        String query = qb.build();
+        assertEquals("SELECT * FROM my_table", query, "Build method did not return the expected query.");
+        assertThrows(IllegalStateException.class, qb::build, "QueryBuilder did not reset after build.");
+    }
+
+    @Test
+    void emptyBuildThrowsException() {
+        QueryBuilder qb = new QueryBuilder();
+        assertThrows(IllegalStateException.class, qb::build, "Building an empty query did not throw an exception.");
+    }
+}

todo.txt

@@ -1,5 +1,6 @@
 TODO: Connection Pooling
 TODO: Batch Processing
+TODO: migration rerun
 DONE: TransactionManager
 DONE: Result Mapping
 DONE: Config Management