Additional support for arrays in luajava library.
This commit is contained in:
James Roseborough
187
src/test/java/org/luaj/vm/LuaJavaCoercionTest.java
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187
src/test/java/org/luaj/vm/LuaJavaCoercionTest.java
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package org.luaj.vm;
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import junit.framework.TestCase;
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import org.luaj.lib.j2se.CoerceJavaToLua;
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import org.luaj.lib.j2se.CoerceLuaToJava;
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import org.luaj.platform.J2sePlatform;
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public class LuaJavaCoercionTest extends TestCase {
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private LuaState vm;
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private static LInteger ZERO = LInteger.valueOf(0);
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private static LInteger ONE = LInteger.valueOf(1);
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private static LInteger TWO = LInteger.valueOf(2);
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private static LInteger THREE = LInteger.valueOf(3);
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private static LString LENGTH = LString.valueOf("length");
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protected void setUp() throws Exception {
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super.setUp();
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Platform.setInstance( new J2sePlatform() );
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org.luaj.compiler.LuaC.install();
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vm = Platform.newLuaState();
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}
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public void testJavaIntToLuaInt() {
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Integer i = Integer.valueOf(777);
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LValue v = CoerceJavaToLua.coerce(i);
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assertEquals( LInteger.class, v.getClass() );
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assertEquals( 777, v.toJavaInt() );
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}
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public void testLuaIntToJavaInt() {
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LInteger i = LInteger.valueOf(777);
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Object o = CoerceLuaToJava.coerceArg(i, int.class);
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assertEquals( Integer.class, o.getClass() );
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assertEquals( 777, ((Number)o).intValue() );
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o = CoerceLuaToJava.coerceArg(i, Integer.class);
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assertEquals( Integer.class, o.getClass() );
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assertEquals( new Integer(777), o );
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}
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public void testJavaStringToLuaString() {
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String s = new String("777");
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LValue v = CoerceJavaToLua.coerce(s);
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assertEquals( LString.class, v.getClass() );
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assertEquals( "777", v.toJavaString() );
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}
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public void testLuaStringToJavaString() {
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LString s = new LString("777");
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Object o = CoerceLuaToJava.coerceArg(s, String.class);
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assertEquals( String.class, o.getClass() );
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assertEquals( "777", o );
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}
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public void testJavaIntArrayToLuaTable() {
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int[] i = { 222, 333 };
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LValue v = CoerceJavaToLua.coerce(i);
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assertEquals( LUserData.class, v.getClass() );
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assertNotNull( v.luaGetMetatable() );
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assertEquals( LInteger.valueOf(222), v.luaGetTable(vm, ONE) );
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assertEquals( LInteger.valueOf(333), v.luaGetTable(vm, TWO) );
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assertEquals( TWO, v.luaGetTable(vm, LENGTH));
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assertEquals( LNil.NIL, v.luaGetTable(vm, THREE) );
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assertEquals( LNil.NIL, v.luaGetTable(vm, ZERO) );
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v.luaSetTable(vm, ONE, LInteger.valueOf(444));
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v.luaSetTable(vm, TWO, LInteger.valueOf(555));
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assertEquals( 444, i[0] );
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assertEquals( 555, i[1] );
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assertEquals( LInteger.valueOf(444), v.luaGetTable(vm, ONE) );
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assertEquals( LInteger.valueOf(555), v.luaGetTable(vm, TWO) );
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try {
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v.luaSetTable(vm, ZERO, LInteger.valueOf(777));
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fail( "array bound exception not thrown" );
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} catch ( LuaErrorException lee ) {
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// expected
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}
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try {
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v.luaSetTable(vm, THREE, LInteger.valueOf(777));
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fail( "array bound exception not thrown" );
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} catch ( LuaErrorException lee ) {
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// expected
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}
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}
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public void testLuaTableToJavaIntArray() {
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LTable t = new LTable();
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t.put(1, LInteger.valueOf(222) );
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t.put(2, LInteger.valueOf(333) );
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int[] i = null;
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Object o = CoerceLuaToJava.coerceArg(t, int[].class);
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assertEquals( int[].class, o.getClass() );
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i = (int[]) o;
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assertEquals( 2, i.length );
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assertEquals( 222, i[0] );
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assertEquals( 333, i[1] );
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}
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public void testArrayParamScoring() {
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int a = 5;
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int[] b = { 44, 66 };
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int[][] c = { { 11, 22 }, { 33, 44 } };
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LValue la = LInteger.valueOf(a);
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LTable tb = new LTable();
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LTable tc = new LTable();
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LValue va = CoerceJavaToLua.coerce(a);
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LValue vb = CoerceJavaToLua.coerce(b);
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LValue vc = CoerceJavaToLua.coerce(c);
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tc.put( ONE, new LTable() );
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int saa = CoerceLuaToJava.scoreParamTypes( new LValue[] { la }, new Class[] { int.class } );
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int sab = CoerceLuaToJava.scoreParamTypes( new LValue[] { la }, new Class[] { int[].class } );
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int sac = CoerceLuaToJava.scoreParamTypes( new LValue[] { la }, new Class[] { int[][].class } );
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assertTrue( saa < sab );
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assertTrue( saa < sac );
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int sba = CoerceLuaToJava.scoreParamTypes( new LValue[] { tb }, new Class[] { int.class } );
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int sbb = CoerceLuaToJava.scoreParamTypes( new LValue[] { tb }, new Class[] { int[].class } );
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int sbc = CoerceLuaToJava.scoreParamTypes( new LValue[] { tb }, new Class[] { int[][].class } );
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assertTrue( sbb < sba );
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assertTrue( sbb < sbc );
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int sca = CoerceLuaToJava.scoreParamTypes( new LValue[] { tc }, new Class[] { int.class } );
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int scb = CoerceLuaToJava.scoreParamTypes( new LValue[] { tc }, new Class[] { int[].class } );
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int scc = CoerceLuaToJava.scoreParamTypes( new LValue[] { tc }, new Class[] { int[][].class } );
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assertTrue( scc < sca );
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assertTrue( scc < scb );
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int vaa = CoerceLuaToJava.scoreParamTypes( new LValue[] { va }, new Class[] { int.class } );
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int vab = CoerceLuaToJava.scoreParamTypes( new LValue[] { va }, new Class[] { int[].class } );
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int vac = CoerceLuaToJava.scoreParamTypes( new LValue[] { va }, new Class[] { int[][].class } );
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assertTrue( vaa < vab );
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assertTrue( vaa < vac );
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int vba = CoerceLuaToJava.scoreParamTypes( new LValue[] { vb }, new Class[] { int.class } );
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int vbb = CoerceLuaToJava.scoreParamTypes( new LValue[] { vb }, new Class[] { int[].class } );
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int vbc = CoerceLuaToJava.scoreParamTypes( new LValue[] { vb }, new Class[] { int[][].class } );
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assertTrue( vbb < vba );
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assertTrue( vbb < vbc );
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int vca = CoerceLuaToJava.scoreParamTypes( new LValue[] { vc }, new Class[] { int.class } );
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int vcb = CoerceLuaToJava.scoreParamTypes( new LValue[] { vc }, new Class[] { int[].class } );
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int vcc = CoerceLuaToJava.scoreParamTypes( new LValue[] { vc }, new Class[] { int[][].class } );
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assertTrue( vcc < vca );
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assertTrue( vcc < vcb );
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}
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public static class SampleClass {
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public String sample() { return "void-args"; }
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public String sample(int a) { return "int-args "+a; }
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public String sample(int[] a) { return "int-array-args "+a[0]+","+a[1]; }
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public String sample(int[][] a) { return "int-array-array-args "+a[0][0]+","+a[0][1]+","+a[1][0]+","+a[1][1]; }
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}
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private static final LString SAMPLE = LString.valueOf("sample");
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public void testIntArrayParameterMatching() {
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LValue v = CoerceJavaToLua.coerce(new SampleClass());
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// get sample field, call with no arguments
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LValue method = v.luaGetTable(vm, SAMPLE);
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vm.pushlvalue(method);
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vm.pushlvalue(v);
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vm.call(1,1);
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assertEquals( "void-args", vm.tostring(-1) );
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// get sample field, call with no arguments
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vm.pushlvalue(method);
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vm.pushlvalue(v);
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vm.pushlvalue( CoerceJavaToLua.coerce(new Integer(123)));
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vm.call(2,1);
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assertEquals( "int-args 123", vm.tostring(-1) );
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// get sample field, call with no arguments
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vm.pushlvalue(method);
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vm.pushlvalue(v);
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vm.pushlvalue( CoerceJavaToLua.coerce(new int[]{345,678}) );
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vm.call(2,1);
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assertEquals( "int-array-args 345,678", vm.tostring(-1) );
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// get sample field, call with no arguments
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vm.pushlvalue(method);
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vm.pushlvalue(v);
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vm.pushlvalue( CoerceJavaToLua.coerce(new int[][]{{22,33},{44,55}}) );
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vm.call(2,1);
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assertEquals( "int-array-array-args 22,33,44,55", vm.tostring(-1) );
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}
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}
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