test: add math functions test

preparing for xerial#633

src/test/java/org/sqlite/MathFunctionsTest.java

@@ -0,0 +1,247 @@
+package org.sqlite;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class MathFunctionsTest {
+    private Connection conn;
+    private Statement stat;
+
+    @BeforeEach
+    public void connect() throws Exception {
+        conn = DriverManager.getConnection("jdbc:sqlite::memory:");
+        stat = conn.createStatement();
+    }
+
+    @AfterEach
+    public void close() throws SQLException {
+        stat.close();
+        conn.close();
+    }
+
+    @Test
+    public void acos() throws Exception {
+        ResultSet rs = stat.executeQuery("select acos(0.5)");
+        assertTrue(rs.next());
+        assertEquals(1.0471975511966, rs.getDouble(1), 0.00000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void acosh() throws Exception {
+        ResultSet rs = stat.executeQuery("select acosh(10)");
+        assertTrue(rs.next());
+        assertEquals(2.99322284612638, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void asin() throws Exception {
+        ResultSet rs = stat.executeQuery("select asin(0.5)");
+        assertTrue(rs.next());
+        assertEquals(0.523598775598299, rs.getDouble(1), 0.00000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void asinh() throws Exception {
+        ResultSet rs = stat.executeQuery("select asinh(10)");
+        assertTrue(rs.next());
+        assertEquals(2.99822295029797, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void atan() throws Exception {
+        ResultSet rs = stat.executeQuery("select atan(1)");
+        assertTrue(rs.next());
+        assertEquals(0.785398163397448, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void atan2() throws Exception {
+        ResultSet rs = stat.executeQuery("select atan2(1,5)");
+        assertTrue(rs.next());
+        assertEquals(0.197395559849881, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void atn2() throws Exception {
+        ResultSet rs = stat.executeQuery("select atn2(1,5)");
+        assertTrue(rs.next());
+        assertEquals(0.197395559849881, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void atanh() throws Exception {
+        ResultSet rs = stat.executeQuery("select atanh(0.5)");
+        assertTrue(rs.next());
+        assertEquals(0.549306144334055, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void ceil() throws Exception {
+        ResultSet rs = stat.executeQuery("select ceil(0.5)");
+        assertTrue(rs.next());
+        assertEquals(1.0, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void cos() throws Exception {
+        ResultSet rs = stat.executeQuery("select cos(radians(45))");
+        assertTrue(rs.next());
+        assertEquals(0.707106781186548, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void cosh() throws Exception {
+        ResultSet rs = stat.executeQuery("select cosh(0.5)");
+        assertTrue(rs.next());
+        assertEquals(1.12762596520638, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void cot() throws Exception {
+        ResultSet rs = stat.executeQuery("select cot(0.5)");
+        assertTrue(rs.next());
+        assertEquals(1.830487721712452, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void coth() throws Exception {
+        ResultSet rs = stat.executeQuery("select coth(0.5)");
+        assertTrue(rs.next());
+        assertEquals(2.163953413738653, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void degrees() throws Exception {
+        ResultSet rs = stat.executeQuery("select degrees(pi()/2)");
+        assertTrue(rs.next());
+        assertEquals(90.0, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void exp() throws Exception {
+        ResultSet rs = stat.executeQuery("select exp(1)");
+        assertTrue(rs.next());
+        assertEquals(2.71828182845904, rs.getDouble(1), 0.00000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void floor() throws Exception {
+        ResultSet rs = stat.executeQuery("select floor(1.5)");
+        assertTrue(rs.next());
+        assertEquals(1.0, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    // this actually performs ln()
+    public void log() throws Exception {
+        ResultSet rs = stat.executeQuery("select log(2)");
+        assertTrue(rs.next());
+        assertEquals(0.693147180559945, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void log10() throws Exception {
+        ResultSet rs = stat.executeQuery("select log10(10)");
+        assertTrue(rs.next());
+        assertEquals(1, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void pi() throws Exception {
+        ResultSet rs = stat.executeQuery("select pi()");
+        assertTrue(rs.next());
+        assertEquals(3.141592653589793115997963468544185161590576171875, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void power() throws Exception {
+        ResultSet rs = stat.executeQuery("select power(10,2)");
+        assertTrue(rs.next());
+        assertEquals(100, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void radians() throws Exception {
+        ResultSet rs = stat.executeQuery("select radians(45)");
+        assertTrue(rs.next());
+        assertEquals(0.785398163397448, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void sin() throws Exception {
+        ResultSet rs = stat.executeQuery("select sin(radians(30))");
+        assertTrue(rs.next());
+        assertEquals(0.5, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void sinh() throws Exception {
+        ResultSet rs = stat.executeQuery("select sinh(0.5)");
+        assertTrue(rs.next());
+        assertEquals(0.521095305493747, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void sqrt() throws Exception {
+        ResultSet rs = stat.executeQuery("select sqrt(4), sqrt(-1)");
+        assertTrue(rs.next());
+        assertEquals(2, rs.getDouble(1));
+        assertNull(rs.getObject(2));
+        rs.close();
+    }
+
+    @Test
+    public void square() throws Exception {
+        ResultSet rs = stat.executeQuery("select square(4)");
+        assertTrue(rs.next());
+        assertEquals(16, rs.getDouble(1));
+        rs.close();
+    }
+
+    @Test
+    public void tan() throws Exception {
+        ResultSet rs = stat.executeQuery("select tan(0.5)");
+        assertTrue(rs.next());
+        assertEquals(0.54630248984379, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+
+    @Test
+    public void tanh() throws Exception {
+        ResultSet rs = stat.executeQuery("select tanh(0.5)");
+        assertTrue(rs.next());
+        assertEquals(0.46211715726001, rs.getDouble(1), 0.000000000000001);
+        rs.close();
+    }
+}