Index: third_party/protobuf/js/commonjs/rewrite_tests_for_commonjs.js |
diff --git a/third_party/protobuf/js/commonjs/rewrite_tests_for_commonjs.js b/third_party/protobuf/js/commonjs/rewrite_tests_for_commonjs.js |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b6d90d287da7108747b3b5e16f49594b197edc58 |
--- /dev/null |
+++ b/third_party/protobuf/js/commonjs/rewrite_tests_for_commonjs.js |
@@ -0,0 +1,97 @@ |
+/** |
+ * @fileoverview Utility to translate test files to CommonJS imports. |
+ * |
+ * This is a somewhat hacky tool designed to do one very specific thing. |
+ * All of the test files in *_test.js are written with Closure-style |
+ * imports (goog.require()). This works great for running the tests |
+ * against Closure-style generated code, but we also want to run the |
+ * tests against CommonJS-style generated code without having to fork |
+ * the tests. |
+ * |
+ * Closure-style imports import each individual type by name. This is |
+ * very different than CommonJS imports which are by file. So we put |
+ * special comments in these tests like: |
+ * |
+ * // CommonJS-LoadFromFile: test_pb |
+ * goog.require('proto.jspb.test.CloneExtension'); |
+ * goog.require('proto.jspb.test.Complex'); |
+ * goog.require('proto.jspb.test.DefaultValues'); |
+ * |
+ * This script parses that special comment and uses it to generate proper |
+ * CommonJS require() statements so that the tests can run and pass using |
+ * CommonJS imports. The script will change the above statements into: |
+ * |
+ * var test_pb = require('test_pb'); |
+ * googleProtobuf.exportSymbol('proto.jspb.test.CloneExtension', test_pb.CloneExtension, global); |
+ * googleProtobuf.exportSymbol('proto.jspb.test.Complex', test_pb.Complex, global); |
+ * googleProtobuf.exportSymbol('proto.jspb.test.DefaultValues', test_pb.DefaultValues, global); |
+ * |
+ * (The "exportSymbol" function will define the given names in the global |
+ * namespace, taking care not to overwrite any previous value for |
+ * "proto.jspb.test"). |
+ */ |
+ |
+var lineReader = require('readline').createInterface({ |
+ input: process.stdin, |
+ output: process.stdout |
+}); |
+ |
+function tryStripPrefix(str, prefix) { |
+ if (str.lastIndexOf(prefix) !== 0) { |
+ throw "String: " + str + " didn't start with: " + prefix; |
+ } |
+ return str.substr(prefix.length); |
+} |
+ |
+function camelCase(str) { |
+ var ret = ''; |
+ var ucaseNext = false; |
+ for (var i = 0; i < str.length; i++) { |
+ if (str[i] == '-') { |
+ ucaseNext = true; |
+ } else if (ucaseNext) { |
+ ret += str[i].toUpperCase(); |
+ ucaseNext = false; |
+ } else { |
+ ret += str[i]; |
+ } |
+ } |
+ return ret; |
+} |
+ |
+var module = null; |
+var pkg = null; |
+ |
+// Header: goes in every file at the top. |
+console.log("var global = Function('return this')();"); |
+console.log("var googleProtobuf = require('google-protobuf');"); |
+console.log("var testdeps = require('testdeps_commonjs');"); |
+console.log("global.goog = testdeps.goog;"); |
+console.log("global.jspb = testdeps.jspb;"); |
+console.log("var asserts = require('closure_asserts_commonjs');"); |
+console.log(""); |
+console.log("// Bring asserts into the global namespace."); |
+console.log("googleProtobuf.object.extend(global, asserts);"); |
+ |
+lineReader.on('line', function(line) { |
+ var isRequire = line.match(/goog\.require\('([^']*)'\)/); |
+ var isLoadFromFile = line.match(/CommonJS-LoadFromFile: (\S*) (.*)/); |
+ var isSetTestOnly = line.match(/goog.setTestOnly()/); |
+ if (isRequire) { |
+ if (module) { // Skip goog.require() lines before the first directive. |
+ var fullSym = isRequire[1]; |
+ var sym = tryStripPrefix(fullSym, pkg); |
+ console.log("googleProtobuf.exportSymbol('" + fullSym + "', " + module + sym + ', global);'); |
+ } |
+ } else if (isLoadFromFile) { |
+ var module_path = isLoadFromFile[1].split('/'); |
+ module = camelCase(module_path[module_path.length - 1]); |
+ pkg = isLoadFromFile[2]; |
+ |
+ if (module != "googleProtobuf") { // We unconditionally require this in the header. |
+ console.log("var " + module + " = require('./" + isLoadFromFile[1] + "');"); |
+ } |
+ } else if (!isSetTestOnly) { // Remove goog.setTestOnly() lines. |
+ console.log(line); |
+ } |
+}); |