Add unit tests used in vm1
This commit is contained in:
James Roseborough
251
test/junit/org/luaj/vm2/MathLibTest.java
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251
test/junit/org/luaj/vm2/MathLibTest.java
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package org.luaj.vm2;
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import junit.framework.TestCase;
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import org.luaj.vm2.lib.JsePlatform;
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import org.luaj.vm2.lib.MathLib;
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import org.luaj.vm2.lib.jse.JseMathLib;
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public class MathLibTest extends TestCase {
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private LuaValue j2se;
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private LuaValue j2me;
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private boolean supportedOnJ2me;
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public MathLibTest() {
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LuaValue g = JsePlatform.standardGlobals();
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j2se = g.get("math");
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g.load( new MathLib() );
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j2me = g.get("math");
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}
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protected void setUp() throws Exception {
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supportedOnJ2me = true;
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}
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public void testMathDPow() {
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assertEquals( 1, j2mepow(2, 0), 0 );
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assertEquals( 2, j2mepow(2, 1), 0 );
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assertEquals( 8, j2mepow(2, 3), 0 );
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assertEquals( -8, j2mepow(-2, 3), 0 );
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assertEquals( 1/8., j2mepow(2, -3), 0 );
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assertEquals( -1/8., j2mepow(-2, -3), 0 );
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assertEquals( 16, j2mepow(256, .5), 0 );
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assertEquals( 4, j2mepow(256, .25), 0 );
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assertEquals( 64, j2mepow(256, .75), 0 );
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assertEquals( 1./16, j2mepow(256, - .5), 0 );
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assertEquals( 1./ 4, j2mepow(256, -.25), 0 );
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assertEquals( 1./64, j2mepow(256, -.75), 0 );
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assertEquals( Double.NaN, j2mepow(-256, .5), 0 );
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assertEquals( 1, j2mepow(.5, 0), 0 );
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assertEquals( .5, j2mepow(.5, 1), 0 );
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assertEquals(.125, j2mepow(.5, 3), 0 );
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assertEquals( 2, j2mepow(.5, -1), 0 );
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assertEquals( 8, j2mepow(.5, -3), 0 );
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assertEquals(1, j2mepow(0.0625, 0), 0 );
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assertEquals(0.00048828125, j2mepow(0.0625, 2.75), 0 );
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}
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private double j2mepow(double x, double y) {
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return j2me.get("pow").call(LuaValue.valueOf(x),LuaValue.valueOf(y)).todouble();
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}
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public void testAbs() {
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tryMathOp( "abs", 23.45 );
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tryMathOp( "abs", -23.45 );
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}
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public void testCos() {
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tryTrigOps( "cos" );
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}
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public void testCosh() {
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supportedOnJ2me = false;
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tryTrigOps( "cosh" );
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}
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public void testDeg() {
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tryTrigOps( "deg" );
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}
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public void testExp() {
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//supportedOnJ2me = false;
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tryMathOp( "exp", 0 );
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tryMathOp( "exp", 0.1 );
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tryMathOp( "exp", .9 );
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tryMathOp( "exp", 1. );
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tryMathOp( "exp", 9 );
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tryMathOp( "exp", -.1 );
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tryMathOp( "exp", -.9 );
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tryMathOp( "exp", -1. );
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tryMathOp( "exp", -9 );
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}
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public void testLog() {
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supportedOnJ2me = false;
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tryMathOp( "log", 0.1 );
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tryMathOp( "log", .9 );
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tryMathOp( "log", 1. );
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tryMathOp( "log", 9 );
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tryMathOp( "log", -.1 );
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tryMathOp( "log", -.9 );
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tryMathOp( "log", -1. );
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tryMathOp( "log", -9 );
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}
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public void testLog10() {
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supportedOnJ2me = false;
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tryMathOp( "log10", 0.1 );
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tryMathOp( "log10", .9 );
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tryMathOp( "log10", 1. );
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tryMathOp( "log10", 9 );
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tryMathOp( "log10", 10 );
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tryMathOp( "log10", 100 );
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tryMathOp( "log10", -.1 );
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tryMathOp( "log10", -.9 );
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tryMathOp( "log10", -1. );
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tryMathOp( "log10", -9 );
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tryMathOp( "log10", -10 );
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tryMathOp( "log10", -100 );
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}
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public void testRad() {
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tryMathOp( "rad", 0 );
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tryMathOp( "rad", 0.1 );
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tryMathOp( "rad", .9 );
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tryMathOp( "rad", 1. );
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tryMathOp( "rad", 9 );
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tryMathOp( "rad", 10 );
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tryMathOp( "rad", 100 );
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tryMathOp( "rad", -.1 );
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tryMathOp( "rad", -.9 );
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tryMathOp( "rad", -1. );
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tryMathOp( "rad", -9 );
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tryMathOp( "rad", -10 );
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tryMathOp( "rad", -100 );
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}
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public void testSin() {
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tryTrigOps( "sin" );
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}
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public void testSinh() {
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supportedOnJ2me = false;
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tryTrigOps( "sinh" );
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}
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public void testSqrt() {
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tryMathOp( "sqrt", 0 );
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tryMathOp( "sqrt", 0.1 );
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tryMathOp( "sqrt", .9 );
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tryMathOp( "sqrt", 1. );
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tryMathOp( "sqrt", 9 );
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tryMathOp( "sqrt", 10 );
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tryMathOp( "sqrt", 100 );
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}
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public void testTan() {
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tryTrigOps( "tan" );
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}
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public void testTanh() {
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supportedOnJ2me = false;
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tryTrigOps( "tanh" );
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}
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public void testAtan2() {
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supportedOnJ2me = false;
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tryDoubleOps( "atan2", false );
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}
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public void testFmod() {
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tryDoubleOps( "fmod", false );
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}
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public void testPow() {
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tryDoubleOps( "pow", true );
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}
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private void tryDoubleOps( String op, boolean positiveOnly ) {
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// y>0, x>0
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tryMathOp( op, 0.1, 4.0 );
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tryMathOp( op, .9, 4.0 );
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tryMathOp( op, 1., 4.0 );
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tryMathOp( op, 9, 4.0 );
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tryMathOp( op, 10, 4.0 );
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tryMathOp( op, 100, 4.0 );
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// y>0, x<0
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tryMathOp( op, 0.1, -4.0 );
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tryMathOp( op, .9, -4.0 );
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tryMathOp( op, 1., -4.0 );
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tryMathOp( op, 9, -4.0 );
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tryMathOp( op, 10, -4.0 );
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tryMathOp( op, 100, -4.0 );
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if ( ! positiveOnly ) {
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// y<0, x>0
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tryMathOp( op, -0.1, 4.0 );
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tryMathOp( op, -.9, 4.0 );
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tryMathOp( op, -1., 4.0 );
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tryMathOp( op, -9, 4.0 );
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tryMathOp( op, -10, 4.0 );
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tryMathOp( op, -100, 4.0 );
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// y<0, x<0
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tryMathOp( op, -0.1, -4.0 );
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tryMathOp( op, -.9, -4.0 );
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tryMathOp( op, -1., -4.0 );
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tryMathOp( op, -9, -4.0 );
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tryMathOp( op, -10, -4.0 );
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tryMathOp( op, -100, -4.0 );
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}
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// degenerate cases
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tryMathOp( op, 0, 1 );
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tryMathOp( op, 1, 0 );
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tryMathOp( op, -1, 0 );
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tryMathOp( op, 0, -1 );
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tryMathOp( op, 0, 0 );
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}
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private void tryTrigOps(String op) {
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tryMathOp( op, 0 );
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tryMathOp( op, Math.PI/8 );
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tryMathOp( op, Math.PI*7/8 );
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tryMathOp( op, Math.PI*8/8 );
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tryMathOp( op, Math.PI*9/8 );
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tryMathOp( op, -Math.PI/8 );
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tryMathOp( op, -Math.PI*7/8 );
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tryMathOp( op, -Math.PI*8/8 );
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tryMathOp( op, -Math.PI*9/8 );
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}
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private void tryMathOp(String op, double x) {
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try {
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double expected = j2se.get(op).call( LuaValue.valueOf(x)).todouble();
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double actual = j2me.get(op).call( LuaValue.valueOf(x)).todouble();
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if ( supportedOnJ2me )
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assertEquals( expected, actual, 1.e-4 );
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else
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fail("j2me should throw exception for math."+op+" but returned "+actual);
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} catch ( LuaError lee ) {
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if ( supportedOnJ2me )
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throw lee;
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}
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}
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private void tryMathOp(String op, double a, double b) {
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try {
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double expected = j2se.get(op).call( LuaValue.valueOf(a), LuaValue.valueOf(b)).todouble();
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double actual = j2me.get(op).call( LuaValue.valueOf(a), LuaValue.valueOf(b)).todouble();
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if ( supportedOnJ2me )
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assertEquals( expected, actual, 1.e-5 );
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else
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fail("j2me should throw exception for math."+op+" but returned "+actual);
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} catch ( LuaError lee ) {
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if ( supportedOnJ2me )
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throw lee;
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}
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}
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}
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