V0.35.0. Adding netscript_tests in game testbench.

src/NetscriptPort.js

@@ -0,0 +1,51 @@
+import {Settings} from          "./Settings.js";
+
+function NetscriptPort() {
+    this.data = [];
+}
+
+NetscriptPort.prototype.write = function(data) {
+    this.data.push(data);
+    if (this.data.length > Settings.MaxPortCapacity) {
+        return this.data.shift();
+    }
+    return null;
+}
+
+NetscriptPort.prototype.tryWrite = function(data) {
+    if (this.data.length >= Settings.MaxPortCapacity) {
+        return false;
+    }
+    this.data.push(data);
+    return true;
+}
+
+NetscriptPort.prototype.read = function() {
+    if (this.data.length === 0) {
+        return "NULL PORT DATA";
+    }
+    return this.data.shift();
+}
+
+NetscriptPort.prototype.peek = function() {
+    if (this.data.length === 0) {
+        return "NULL PORT DATA";
+    } else {
+        var foo = this.data.slice();
+        return foo[0];
+    }
+}
+
+NetscriptPort.prototype.full = function() {
+    return this.data.length == Settings.MaxPortCapacity;
+}
+
+NetscriptPort.prototype.empty = function() {
+    return this.data.length === 0;
+}
+
+NetscriptPort.prototype.clear = function() {
+    this.data.length = 0;
+}
+
+export {NetscriptPort};