js/tests/lc3/JSNumber/ToByte-001.js

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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  38
  39 gTestfile = 'ToByte-001.js';
  40
  41 /* -*- Mode: java; tab-width: 8 -*-
  42  * Copyright (C) 1997, 1998 Netscape Communications Corporation,
  43  * All Rights Reserved.
  44  */
  45
  46 /**
  47  *  JavaScript to Java type conversion.
  48  *
  49  *  This test passes JavaScript number values to several Java methods
  50  *  that expect arguments of various types, and verifies that the value is
  51  *  converted to the correct value and type.
  52  *
  53  *  This tests instance methods, and not static methods.
  54  *
  55  *  Running these tests successfully requires you to have
  56  *  com.netscape.javascript.qa.liveconnect.DataTypeClass on your classpath.
  57  *
  58  *  Specification:  Method Overloading Proposal for Liveconnect 3.0
  59  *
  60  *  @author: christine@netscape.com
  61  *
  62  */
  63 var SECTION = "number conversion to byte";
  64 var VERSION = "1_4";
  65 var TITLE   = "LiveConnect 3.0 JavaScript to Java Data Type Conversion " +
  66   SECTION;
  67 startTest();
  68
  69 var dt = new DT();
  70
  71 var a = new Array();
  72 var i = 0;
  73
  74 // passing a JS number to a method that expects a int:
  75 // round JS number to integral value using round-to-negative-infinity mode
  76 // numbers with a magnitude too large to be represented in the target integral
  77 //  type result in a runtime error.
  78 // Nan converts to 0.
  79
  80 // Special cases:  0, -0, Infinity, -Infinity, and NaN
  81
  82 a[i++] = new TestObject(
  83   "dt.setByte( 0 )",
  84   "dt.PUB_BYTE",
  85   "dt.getByte()",
  86   "typeof dt.getByte()",
  87   0,
  88   "number" );
  89
  90 // 0 can only have a negative sign for floats and doubles
  91
  92 a[i++] = new TestObject(
  93   "dt.setByte( -0 )",
  94   "Infinity / dt.PUB_BYTE",
  95   "Infinity / dt.getByte()",
  96   "typeof dt.getByte()",
  97   Infinity,
  98   "number" );
  99
 100 a[i++] = new TestObject(
 101   "dt.setByte( java.lang.Byte.MAX_VALUE )",
 102   "dt.PUB_BYTE",
 103   "dt.getByte()",
 104   "typeof dt.getByte()",
 105   java.lang.Byte.MAX_VALUE,
 106   "number" );
 107
 108 a[i++] = new TestObject(
 109   "dt.setByte( java.lang.Byte.MIN_VALUE )",
 110   "dt.PUB_BYTE",
 111   "dt.getByte()",
 112   "typeof dt.getByte()",
 113   java.lang.Byte.MIN_VALUE,
 114   "number" );
 115
 116 a[i++] = new TestObject(
 117   "dt.setByte( -java.lang.Byte.MAX_VALUE )",
 118   "dt.PUB_BYTE",
 119   "dt.getByte()",
 120   "typeof dt.getByte()",
 121   -java.lang.Byte.MAX_VALUE,
 122   "number" );
 123
 124 a[i++] = new TestObject(
 125   "dt.setByte(1e-2000)",
 126   "dt.PUB_BYTE",
 127   "dt.getByte()",
 128   "typeof dt.getByte()",
 129   0,
 130   "number" );
 131
 132 a[i++] = new TestObject(
 133   "dt.setByte(-1e-2000)",
 134   "dt.PUB_BYTE",
 135   "dt.getByte()",
 136   "typeof dt.getByte()",
 137   0,
 138   "number" );
 139
 140 for ( i = 0; i < a.length; i++ ) {
 141   new TestCase(
 142     a[i].description +"; "+ a[i].javaFieldName,
 143     a[i].jsValue,
 144     a[i].javaFieldValue );
 145
 146   new TestCase(
 147     a[i].description +"; " + a[i].javaMethodName,
 148     a[i].jsValue,
 149     a[i].javaMethodValue );
 150
 151   new TestCase(
 152     a[i].javaTypeName,
 153     a[i].jsType,
 154     a[i].javaTypeValue );
 155 }
 156
 157 test();
 158
 159 function TestObject( description, javaField, javaMethod, javaType,
 160                      jsValue, jsType )
 161 {
 162   eval (description );
 163
 164   this.description = description;
 165   this.javaFieldName = javaField;
 166   this.javaFieldValue = eval( javaField );
 167   this.javaMethodName = javaMethod;
 168   this.javaMethodValue = eval( javaMethod );
 169   this.javaTypeName = javaType,
 170     this.javaTypeValue = eval( javaType );
 171
 172   this.jsValue   = jsValue;
 173   this.jsType      = jsType;
 174 }