add tests/jsnums-test/jsnums-test.js to test js-numbers.js internals that can't be tested via Pyret

Author: ds26gte

tests/jsnums-test/jsnums-test.js

@@ -0,0 +1,44 @@
+// To test: Build Pyret, then cd to this directory, and type
+// node jsnums-test.js
+
+var Jasmine = require('jasmine');
+var jazz = new Jasmine();
+const R = require("requirejs");
+var build = process.env["PHASE"] || "build/phaseA";
+R.config({
+  waitSeconds: 15000,
+  paths: {
+    "pyret-base": "../../" + build
+  }
+});
+R(["pyret-base/js/js-numbers"], function(JN) {
+  var sampleErrorBacks = {
+    throwDomainError: function() { throw 'domainError'; },
+    throwLogNonPositive: function() { throw 'logNonPositive'; },
+  };
+  describe("check exceptions in js-numbers methods that can't be tested in Pyret", function() {
+    it("bnpExp", function() {
+      // BigInteger.*.expt calls bnPow, which calls bnpExp
+      // shd raise exc for too-large
+      expect(function() { JN.makeBignum(2).expt(JN.makeBignum(0xffffffff + 1), sampleErrorBacks); }).toThrow('domainError');
+
+      // BigInteger.*.log
+      // should raise exception for arg <= 0
+      expect(function() { JN.makeBignum(-1).log(sampleErrorBacks); }).toThrow('logNonPositive');
+
+      // BigInteger.*asin
+      // should raise exception for arg ∉ [-1, +1]
+      expect(function() { JN.makeBignum(-1.5).asin(sampleErrorBacks); }).toThrow('domainError');
+      expect(function() { JN.makeBignum(+1.5).asin(sampleErrorBacks); }).toThrow('domainError');
+
+      // BigInteger.*acos
+      // should raise exception for arg ∉ [-1, +1]
+      expect(function() { JN.makeBignum(-1.5).acos(sampleErrorBacks); }).toThrow('domainError');
+      expect(function() { JN.makeBignum(+1.5).acos(sampleErrorBacks); }).toThrow('domainError');
+
+    });
+  });
+
+  jazz.execute();
+
+});