Snapshots basic support

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 .DS_Store
+.pingster

bin/cli.js

@@ -14,10 +14,12 @@ const optimist = require('optimist')
   .alias('d', 'verbose')
   .alias('h', 'help')
   .alias('v', 'version')
+  .alias('s', 'allow-snapshots')
   .describe('c', 'optional path to config file wtih .yml ext')
   .describe('d', 'enable verbose logging mode')
   .describe('h', 'print help')
-  .describe('v', 'print version');
+  .describe('v', 'print version')
+  .describe('s', 'allow snapshots creation');
 const argv = optimist.argv;
 
 if (argv.help) {
@@ -35,6 +37,7 @@ if (argv.version) {
 }
 
 const verboseMode = argv.verbose;
+const allowSnapshots = argv.s;
 
 const configPath = path.join(process.cwd(), argv.config || './pingster.yml');
 verboseMode && console.log('configPath:', configPath);
@@ -46,11 +49,25 @@ try {
   console.error(`Problem opening config: ${e}`);
   return process.exit(1);
 }
-verboseMode && console.log('config:', JSON.stringify(config, null, 2));
 
 const spinner = ora({ color: 'green' });
 spinner.start('Running tests!');
 
+if (allowSnapshots) {
+  const names = Object.keys(config);
+  names.forEach(name => {
+    try {
+      config[name].snapshot = fs.readJSONSync(
+        `${path.join(process.cwd(), '.pingster', 's', name)}`
+      );
+    } catch (e) {
+      // 🤔 well it looks like there is no snapshot, or it's broken
+    }
+  });
+}
+
+verboseMode && console.log('config:', JSON.stringify(config, null, 2));
+
 (async () => {
   try {
     const results = await tester(config);
@@ -62,6 +79,16 @@ spinner.start('Running tests!');
     } else {
       spinner.succeed('All tests have successfully finished!');
     }
+
+    if (allowSnapshots) {
+      const successful = results.filter(x => x.success);
+      successful.forEach(x =>
+        fs.outputJson(
+          `${path.join(process.cwd(), '.pingster', 's', x.name)}`,
+          x.response
+        )
+      );
+    }
   } catch (e) {
     spinner.fail(`Something went wrong! ${e}`);
   }

src/tester.js

@@ -9,7 +9,7 @@ const instance = axios.create({
 async function runTest(test) {
   try {
     const { status, data, headers } = await instance.get(test.url);
-    const { expect } = test;
+    const { expect, snapshot } = test;
 
     let success = true; // if there is no expects and request succeeded - all good ^_^
 
@@ -27,6 +27,10 @@ async function runTest(test) {
       }
     }
 
+    if (snapshot) {
+      success = success && ismatch(data, snapshot.data);
+    }
+
     return { success, response: { status, data, headers }, ...test };
   } catch (e) {
     return { success: false, error: e, ...test };