testcase for tweaked require.id sanity

ecmascript-testcases/test-commonjs-require-tweaked-id.js

@@ -0,0 +1,69 @@
+/*
+ *  Normally global require() has no 'id' property and module 'id'
+ *  properties are set by Duktape with fully resolved, canonical
+ *  identifiers.
+ *
+ *  If user code tweaks these IDs, the global require() may then have
+ *  an 'id' and global require() or module require() 'id' properties
+ *  may have invalid or non-canonical values.  This testcase ensures
+ *  that Duktape re-resolves even the manually tweaked 'id' values.
+ */
+
+/*===
+Duktape.find quux
+quux: Error
+Duktape.find foo/bar/quux
+./quux: Error
+Duktape.find foo/quux
+../quux: Error
+Duktape.find testModule
+Duktape.find test/innerRequire
+testModule: Error
+===*/
+
+Duktape.find = function (id) {
+    print('Duktape.find', id);
+    if (id == 'testModule') {
+        return 'var mod;\n' +
+               'exports.name = "testModule";\n' +
+               'require.id = "./././testModule/foo/../../test";\n' +   // same as 'test' but non-canonical
+               'mod = require("./innerRequire");\n';
+    }
+    throw new Error('cannot find module');
+}
+
+function tweakedIdentifierTest() {
+    var mod;
+
+    function globalTest(id) {
+        var mod;
+        try {
+            mod = require(id);
+            print(id + ':', 'success, should not happen');
+        } catch (e) {
+            print(id + ':', e.name);
+        }
+    }
+
+    // Global require.id
+
+    require.id = './foo//./bar';  // same as 'foo/bar'
+    globalTest('quux');
+    globalTest('./quux');
+    globalTest('../quux');
+    delete require.id;
+
+    // Module 'id' not relative
+    try {
+        mod = require('testModule');
+        print('never here');
+    } catch (e) {
+        print('testModule:', e.name);
+    }
+}
+
+try {
+    tweakedIdentifierTest();
+} catch (e) {
+    print(e);
+}