Merge pull request #4340 from dongmingh/3887

Add support of truffle test --migrate-none and event message

Author: dongmingh

packages/core/lib/commands/test/index.js

@@ -48,6 +48,7 @@ const command = {
   help: {
     usage:
       `truffle test [<test_file>] [--compile-all[-debug]] [--compile-none] ` +
+      `[--migrate-none] ` +
       `[--network <name>]${OS.EOL}                             ` +
       `[--verbose-rpc] [--show-events] [--debug] ` +
       `[--debug-global <identifier>] [--bail|-b]${OS.EOL}                      ` +
@@ -75,6 +76,10 @@ const command = {
           "Compile all contracts and do so in debug mode for extra revert info.  May " +
           "cause errors on large\n                    contracts."
       },
+      {
+        option: "--migrate-none",
+        description: "Do not migrate any contracts before running the tests."
+      },
       {
         option: "--verbose-rpc",
         description:

packages/core/lib/testing/Test.js

@@ -106,7 +106,13 @@ const Test = {
 
     const runner = new TestRunner(config);
 
-    await this.performInitialDeploy(config, testResolver);
+    if (config.migrateNone || config['migrate-none']) {
+      if (config.events) {
+        config.events.emit("migrate:skipped");
+      }
+    } else {
+      await this.performInitialDeploy(config, testResolver);
+    }
 
     const sourcePaths = []
       .concat(

packages/events/defaultSubscribers/index.js

@@ -1,5 +1,6 @@
 module.exports = {
   compile: require("./compile"),
+  migrate: require("./migrate"),
   init: require("./init"),
   obtain: require("./obtain"),
   unbox: require("./unbox"),

packages/events/defaultSubscribers/migrate.js

@@ -0,0 +1,15 @@
+module.exports = {
+  initialization: function () {
+    this.logger = console;
+  },
+  handlers: {
+    "migrate:skipped": [
+      function () {
+        if (this.quiet) return;
+        this.logger.log(
+          `> Migration skipped because --migrate-none option was passed.`
+        );
+      }
+    ]
+  }
+};