AddressDecoder

test/cli/testdecoder.js

@@ -0,0 +1,33 @@
+
+var vm = require('vm');
+var fs = require('fs');
+var includeInThisContext = function(path) {
+    var code = fs.readFileSync(path);
+    vm.runInThisContext(code, path);
+};
+
+includeInThisContext("src/emu.js");
+
+function assert(b, msg) {
+  if (!b) { throw new Error(msg); }
+}
+function assertEquals(a,b) {
+  assert(a==b, a + " != " + b);
+}
+
+describe('Test address decoder', function() {
+  it('Should work empty', function() {
+    var decoder = new AddressDecoder([]);
+    assertEquals(0, decoder(0x1234));
+    assertEquals(0, decoder(0x123456));
+  });
+  it('Should work with 1 range', function() {
+    var decoder = new AddressDecoder([
+      [0x1000, 0x7fff, 0xff, function(a) { return a+2; }]
+    ]);
+    assertEquals(0, decoder(0xfff));
+    assertEquals(2, decoder(0x1000));
+    assertEquals(1, decoder(0x7fff));
+    assertEquals(0, decoder(0x8000));
+  });
+});