30 days of node tutorial series code snippets

glarejs · glarejs · commit 1aae698c2cfe · 2017-12-06T20:12:22.000+05:30
diff --git a/day24-child-processes/master-exec.js b/day24-child-processes/master-exec.js
@@ -0,0 +1,23 @@
+var cp = require('child_process');
+
+for(var i=1; i<6; i++) {
+   var workerProcess = cp.exec('node slave.js ' + i , function(error, stdout, stderr) {
+      if (error) {
+         console.log(error.stack);
+         console.log('Error Code: '+error.code);
+         console.log('Error Signal: '+error.signal);
+      }
+
+      if(stderr){
+         console.log('value of stderr: ' + stderr);
+      }
+
+      console.log('Value of stdout: ' + stdout);
+      
+     
+   });
+   workerProcess.on('exit', function (code) {
+       //console.log("exit code : "+ code);
+      console.log('Child process exited ');
+   });
+}
diff --git a/day24-child-processes/master-execFile.js b/day24-child-processes/master-execFile.js
@@ -0,0 +1,8 @@
+var ef = require('child_process').execFile;
+var child = ef('node', ['--version'], (err, stdout, stderr) => {
+    if (err) {
+        console.log('stderr', stderr);
+        throw err;
+    }
+    console.log('Node.js version  : ', stdout);
+});
diff --git a/day24-child-processes/master-fork.js b/day24-child-processes/master-fork.js
@@ -0,0 +1,9 @@
+var cp = require('child_process');
+ 
+for(var i=1; i<6; i++) {
+   var worker = cp.fork("slave.js", [i]);	
+
+   worker.on('close', function (code) {
+      console.log('child process exited with code ' + code);
+   });
+}
diff --git a/day24-child-processes/master-spawn.js b/day24-child-processes/master-spawn.js
@@ -0,0 +1,18 @@
+var cp = require('child_process');
+ 
+for(var i = 1; i<6; i++) {
+   var worker = cp.spawn('node', ['slave.js', i]);
+
+   worker.stdout.on('data', function (data) {
+      console.log('Value of Stdout : ' + data);
+   });
+
+   worker.stderr.on('data', function (data) {
+      console.log('stderr: ' + data);
+   });
+
+   worker.on('close', function (code) {
+       //console.log("Exit code : " + code);
+      console.log('child process exited with code ');
+   });
+}
diff --git a/day24-child-processes/slave.js b/day24-child-processes/slave.js
@@ -0,0 +1 @@
+console.log("Child Process number " + process.argv[2] + " is executed." );
diff --git a/day27-assert/assert-1.js b/day27-assert/assert-1.js
@@ -0,0 +1,6 @@
+//Name of the file : assert-1.js
+
+var assert = require('assert');
+var a = 10;
+var b = 20;
+assert(a > b);
diff --git a/day27-assert/assert-snippet-false.js b/day27-assert/assert-snippet-false.js
@@ -0,0 +1,10 @@
+var assert = require('assert');  
+function demo (x,y,z) {  
+  var value = x + y + z ; 
+  return value;
+}  
+var output = demo(3,2,10);
+console.log("Output : " + output);
+var expected_output = 12;
+console.log("Expected Output : " + expected_output);
+assert( output === expected_output , 'This is not what we expected');  
diff --git a/day27-assert/assert-snippet-true.js b/day27-assert/assert-snippet-true.js
@@ -0,0 +1,10 @@
+var assert = require('assert');  
+function demo (x,y,z) {  
+  var value = x + y + z ; 
+  return value;
+}  
+var output = demo(3,2,10);
+console.log("Output : " + output);
+var expected_output = 15;
+console.log("Expected Output : " + expected_output);
+assert( output === expected_output , 'This is not what we expected'); 
diff --git a/day27-assert/assert.deepEqual.js b/day27-assert/assert.deepEqual.js
@@ -0,0 +1,9 @@
+//Name of the file : assert.deepEqual.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+var c = 10.25;
+//Case 1
+assert.deepEqual(a,b, "Nothing printed because they are using == for comparison");
+//Case 2
+assert.deepEqual(a,c, "Error because values doesn't match");
diff --git a/day27-assert/assert.deepStrictEqual.js b/day27-assert/assert.deepStrictEqual.js
@@ -0,0 +1,6 @@
+//Name of the file : assert.deepStrictEqual.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+
+assert.deepStrictEqual(a,b, "Error because they are using === for comparison");
diff --git a/day27-assert/assert.equal.js b/day27-assert/assert.equal.js
@@ -0,0 +1,9 @@
+//Name of the file : assert.equal.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+var c = 10.25;
+//Case 1
+assert.equal(a,b, "Nothing printed because they are using == for comparison");
+//Case 2
+assert.equal(a,c, "Error because values doesn't match");
diff --git a/day27-assert/assert.fail.js b/day27-assert/assert.fail.js
@@ -0,0 +1,3 @@
+//Name of the file : assert.fail.js
+var assert = require('assert');
+assert.fail(1, 2, 'This is an error', '>');
diff --git a/day27-assert/assert.ifError.js b/day27-assert/assert.ifError.js
@@ -0,0 +1,24 @@
+//Name of the file : assert.ifError.js
+var assert = require('assert');
+//Case 1 : No error
+assert.ifError(0);
+//Case 2 : throws 1
+assert.ifError(1);
+//Case 3 : throws error
+assert.ifError('error');
+
+
+
+
+/**var assert = require('assert');
+function sayHello(name, callback) {
+  var error = true;
+  var str   = "Hello "+name;
+  callback(error, str);
+}
+
+// use the function
+sayHello('World', function(err, value){
+  assert.ifError(err);
+  assert.equal(value, "Hello World");
+}) **/
diff --git a/day27-assert/assert.js b/day27-assert/assert.js
@@ -0,0 +1,5 @@
+//Name of the file : assert.js
+var assert = require('assert');
+var a = 10;
+var b = 20;
+assert(a > b , "A should be greater than B");
diff --git a/day27-assert/assert.notDeepEqual.js b/day27-assert/assert.notDeepEqual.js
@@ -0,0 +1,10 @@
+//Name of the file : assert.notDeepEqual.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+var c = 10.25;
+//Case 1
+assert.notDeepEqual(a,c, "Nothing printed because they are using !== for comparison");
+//Case 2
+assert.notDeepEqual(a,b, "Error because values match here");
+
diff --git a/day27-assert/assert.notDeepStrictEqual.js b/day27-assert/assert.notDeepStrictEqual.js
@@ -0,0 +1,9 @@
+//Name of the file : assert.notDeepStrictEqual.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+var c = 10;
+//Case 1
+assert.notDeepStrictEqual(a,b, "No Error because they are checking for not deep strict equal");
+//Case 2
+assert.notDeepStrictEqual(a,c, "Error because values are equal");
diff --git a/day27-assert/assert.notEqual.js b/day27-assert/assert.notEqual.js
@@ -0,0 +1,10 @@
+//Name of the file : assert.notEqual.js
+var assert = require('assert');
+var a = 10;
+var b = 10.25;
+var c = '10';
+
+//Case 1
+assert.notEqual(a,b, "Nothing printed because they are using != for comparison");
+//Case 2
+assert.notEqual(a,c, "Error because values match");
diff --git a/day27-assert/assert.notStrictEqual.js b/day27-assert/assert.notStrictEqual.js
@@ -0,0 +1,13 @@
+//Name of the file : assert.notStrictEqual.js
+var assert = require('assert');
+var a = 10;
+var b = 10.25;
+var c = '10';
+var d = 10;
+
+//Case 1
+assert.notStrictEqual(a,b, "Nothing printed because they are using !== for comparison");
+//Case 2
+assert.notStrictEqual(a,c, "Nothing printed because still its not a match");
+//case 3
+assert.notStrictEqual(a,d, "Error because its a match");
diff --git a/day27-assert/assert.ok.js b/day27-assert/assert.ok.js
@@ -0,0 +1,14 @@
+const assert = require('assert');
+//Case 1
+assert.ok(true, "No error ");
+//Case 2
+assert.ok(1,"No error");
+//Case 3
+assert.ok(false,"It is an error");
+//Case 4
+assert.ok(0 , " Again error");
+//case 5
+var a = 10;
+var b = 20;
+assert(a > b , "A should be greater than B");
+
diff --git a/day27-assert/assert.strictEqual.js b/day27-assert/assert.strictEqual.js
@@ -0,0 +1,11 @@
+//Name of the file : assert.strictEqual.js
+var assert = require('assert');
+var a = 10;
+var b = '10';
+var c = 10;
+
+//Case 1
+assert.strictEqual(a,c, "Nothing printed");
+//Case 2
+assert.strictEqual(a,b, "Error acc to strict equality comparison");
+
diff --git a/day27-assert/assert.throw.js b/day27-assert/assert.throw.js
@@ -0,0 +1,8 @@
+//Name of the file : assert.throw.js
+var assert = require('assert');
+assert.throws(
+  () => {
+    throw new Error('An error occured');
+  },
+  Error
+);
diff --git a/day28-Getting-tweets-using-node/client_secret.json b/day28-Getting-tweets-using-node/client_secret.json
@@ -0,0 +1 @@
+{"installed":{"client_id":"856319982788-lm8jp0v9en112g5061p48me0lpe6m7nm.apps.googleusercontent.com","project_id":"affable-radio-188108","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://accounts.google.com/o/oauth2/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs","client_secret":"dus0v5ovPKWVE39CnOcunsTw","redirect_uris":["urn:ietf:wg:oauth:2.0:oob","http://localhost"]}}
diff --git a/day28-Getting-tweets-using-node/cs.json b/day28-Getting-tweets-using-node/cs.json
@@ -0,0 +1,12 @@
+{
+  "type": "service_account",
+  "project_id": "affable-radio-188108",
+  "private_key_id": "fd6b523cda48b0a631dfdc500bb84a7ddbd79e9c",
+  "private_key": "-----BEGIN PRIVATE KEY-----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\n6fLC4/fon8EQrFWAuUF3dfc=\n-----END PRIVATE KEY-----\n",
+  "client_email": "nodejsera@affable-radio-188108.iam.gserviceaccount.com",
+  "client_id": "106582180396937419752",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://accounts.google.com/o/oauth2/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/nodejsera%40affable-radio-188108.iam.gserviceaccount.com"
+}
diff --git a/day28-Getting-tweets-using-node/package-lock.json b/day28-Getting-tweets-using-node/package-lock.json
diff --git a/day28-Getting-tweets-using-node/quickstart.js b/day28-Getting-tweets-using-node/quickstart.js

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+console.log("Child Process number " + process.argv[2] + " is executed." );`