add base scm class, mercurial class with tests

lib/scm/base.js

@@ -0,0 +1,72 @@
+'use strict';
+
+var spawn = require('child_process').spawn,
+	EventEmitter = require('events').EventEmitter,
+	inherits = require('util').inherits;
+
+function BaseScm(config) {
+	var self = this;
+	self.config = config;
+	['src'].forEach(function(key) {
+		if (key in self.config === false) throw new Error(key + ' is not set');
+		self[key] = self.config[key];
+	});
+	self.cwd = config.cwd;
+}
+
+module.exports = BaseScm;
+
+inherits(BaseScm, EventEmitter);
+
+BaseScm.prototype._exec = function(command, args, callback) {
+	var self = this,
+		stdout = '';
+	var cmd = spawn(command, args, {cwd: this.cwd});
+	cmd.stdout.on('data', function(data) {
+		if (self.isEmit) self.emit('stdout', data);
+		stdout += data;
+	});
+	cmd.stderr.on('data', function(data) {
+		callback(new Error('Scm outputs to stderr: ' + data));
+		cmd.kill();
+	});
+	cmd.on('exit', function(code) {
+		var err = null;
+		if (code !== 0) err = new Error(
+			'Scm command exits with non-zero code: ' + code
+		)
+		callback(err, stdout);
+	});
+	return cmd;
+};
+
+/**
+ * Clone repository to the `dst` update to `rev` and  set `this.cwd` to `dst`
+ */
+BaseScm.prototype.clone = function(dst, rev, callback) {
+};
+
+/**
+ * Pull changes from remote repository without update
+ */
+BaseScm.prototype.pull = function(rev, callback) {
+};
+
+/**
+ * Returns string id of current revision
+ */
+BaseScm.prototype.getId = function(callback) {
+};
+
+/**
+ * Returns array of changes between revisions
+ */
+BaseScm.prototype.getChanges = function(rev1, rev2, callback) {
+};
+
+/**
+ * Updates to revision
+ */
+BaseScm.prototype.update = function(rev, callback) {
+};
+

lib/scm/index.js

@@ -0,0 +1,8 @@
+'use strict';
+
+var path = require('path');
+
+exports.createScm = function(config) {
+	var Constructor = require(path.join(__dirname, config.type));
+	return new Constructor(config);
+};

lib/scm/mercurial.js

@@ -0,0 +1,53 @@
+'use strict';
+
+var BaseScm = require('./base'),
+	inherits = require('util').inherits;
+
+function MercurialScm(config) {
+	BaseScm.call(this, config);
+}
+
+module.exports = MercurialScm;
+
+inherits(MercurialScm, BaseScm);
+
+MercurialScm.prototype.defaultRev = 'default';
+
+MercurialScm.prototype.clone = function(dst, rev, callback) {
+	var self = this;
+	this._exec('hg', ['clone', '--rev', rev, this.src, dst], function(err) {
+		self.cwd = dst;
+		callback(err);
+	});
+};
+
+MercurialScm.prototype.pull = function(rev, callback) {
+	this._exec('hg', ['pull', '--rev', rev], callback);
+};
+
+MercurialScm.prototype.getId = function(callback) {
+	this._exec('hg', ['id', '--id'], function(err, stdout) {
+		callback(err, !err && stdout.replace('\n', ''));
+	});
+};
+
+MercurialScm.prototype.getChanges = function(rev1, rev2, callback) {
+	this._exec('hg', [
+		'log', '--rev', rev2 + ':' + rev1,
+		'--template', '{node|short};;;{author};;;{date|date};;;{desc}\n'
+	], function(err, stdout) {
+		callback(err, !err &&  stdout.split('\n').slice(0, -2).map(function(str) {
+			var parts = str.split(';;;');
+			return {
+				id: parts[0],
+				author: parts[1],
+				date: new Date(parts[2]).getTime(),
+				comment: parts[3]
+			};
+		}));
+	});
+};
+
+MercurialScm.prototype.update = function(rev, callback) {
+	this._exec('hg', ['up', rev], callback);
+};

package.json

@@ -0,0 +1,35 @@
+{
+  "name": "nci",
+  "version": "0.1.0-alpha",
+  "description": "Continuous integration server written in node.js",
+  "bin": {
+    "nci": "bin/nci"
+  },
+  "scripts": {
+    "test": "mocha --bail --reporter=spec test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/okv/nci.git"
+  },
+  "keywords": [
+    "continuous",
+    "integration",
+    "server",
+    "ci",
+    "build"
+  ],
+  "author": "Oleg Korobenko <oleg.korobenko@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/okv/nci/issues"
+  },
+  "homepage": "https://github.com/okv/nci",
+  "dependencies": {
+    "twostep": "0.4.1"
+  },
+  "devDependencies": {
+    "expect.js": "0.3.1",
+    "mocha": "1.18.2"
+  }
+}

test/repos/.hg/branch

@@ -0,0 +1 @@
+default

test/repos/.hg/cache/branchheads-served

@@ -0,0 +1,2 @@
+98e3a18d8193d36caf143e9b57f5123bfd5878c9 1
+98e3a18d8193d36caf143e9b57f5123bfd5878c9 default

test/repos/.hg/cache/tags

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+1 98e3a18d8193d36caf143e9b57f5123bfd5878c9
+

test/repos/.hg/requires

@@ -0,0 +1,4 @@
+dotencode
+fncache
+revlogv1
+store

test/repos/.hg/store/fncache

@@ -0,0 +1,2 @@
+data/rev0.txt.i
+data/rev1.txt.i

test/repos/.hg/undo.branch

@@ -0,0 +1 @@
+default

test/repos/.hg/undo.desc

@@ -0,0 +1,3 @@
+0
+pull
+file:///mnt/data/home/oleg/work/repository/git-hub/nci/test/repos/mercurial

test/repos/mercurial/.hg/cache/branchheads-served

@@ -0,0 +1,2 @@
+9d7d08445f4ce095c22a98a902a391973cf07f37 2
+9d7d08445f4ce095c22a98a902a391973cf07f37 default

test/repos/mercurial/.hg/cache/tags

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+2 9d7d08445f4ce095c22a98a902a391973cf07f37
+

test/repos/mercurial/.hg/last-message.txt

@@ -0,0 +1 @@
+third revision

test/repos/mercurial/.hg/requires

@@ -0,0 +1,4 @@
+dotencode
+fncache
+revlogv1
+store

test/repos/mercurial/.hg/store/fncache

@@ -0,0 +1,3 @@
+data/rev0.txt.i
+data/rev1.txt.i
+data/rev2.txt.i

test/repos/mercurial/.hg/store/phaseroots

@@ -0,0 +1 @@
+1 da2762e71e87935198a25b0fceab0a364ad2e6d7

test/repos/mercurial/.hg/store/undo.phaseroots

@@ -0,0 +1 @@
+1 da2762e71e87935198a25b0fceab0a364ad2e6d7

test/repos/mercurial/.hg/undo.branch

@@ -0,0 +1 @@
+default

test/repos/mercurial/.hg/undo.desc

@@ -0,0 +1,2 @@
+2
+commit

test/scm.js

@@ -0,0 +1,116 @@
+'use strict';
+
+var expect = require('expect.js'),
+	path = require('path'),
+	fs = require('fs'),
+	createScm = require('../lib/scm').createScm;
+
+
+['mercurial'].forEach(function(type) {
+	describe(type, function() {
+		var data = getTestData(type),
+			repositoryName = 'test-repository',
+			repositoryPath = path.join(path.join(__dirname, 'repos'), repositoryName);
+
+		it('remove test repository dir if it exists', function(done) {
+			if (fs.exists(repositoryPath, function(isExists) {
+				if (isExists) {
+					scm._exec('rm', ['-R', repositoryPath], done);
+				} else {
+					done();
+				}
+			}));
+		});
+
+		var scm = createScm({
+			type: type,
+			src: path.join(__dirname, 'repos', type)
+		});
+
+		var currentRev = data.rev0.id;
+		it('clone rev0 to dst without errors', function(done) {
+			scm.clone(repositoryPath, data.rev0.id, done);
+		});
+
+		it('expect scm.cwd equals to dst', function() {
+			expect(scm.cwd).equal(repositoryPath);
+		});
+
+		it('expect current id equals to rev0', function(done) {
+			scm.getId(function(err, id) {
+				if (err) return done(err);
+				expect(id).equal(data.rev0.id);
+				done();
+			});
+		});
+
+		it('expect none changes from rev0 to default revision', function(done) {
+			scm.getChanges(data.rev0.id, scm.defaultRev, function(err, changes) {
+				if (err) return done(err);
+				expect(changes).ok();
+				expect(changes).length(0);
+				done();
+			});
+		});
+
+		it('pull to default revision without errors', function(done) {
+			scm.pull(scm.defaultRev, done);
+		});
+
+		it('now (after pull) expect rev1 and rev2 as new changes (in reverse ' +
+			'order) from rev0 to default revision', function(done) {
+			scm.getChanges(data.rev0.id, scm.defaultRev, function(err, changes) {
+				if (err) return done(err);
+				expect(changes).ok();
+				expect(changes).length(2);
+				expect(changes).eql([data.rev2, data.rev1]);
+				done();
+			});
+		});
+
+		it('update to default revision (should update to rev2) without error',
+			function(done) {
+				scm.update(scm.defaultRev, done);
+			});
+
+		it('expect current revision equals to rev2', function(done) {
+			scm.getId(function(err, id) {
+				if (err) return done(err);
+				expect(id).equal(data.rev2.id);
+				done();
+			});
+		});
+
+		it('remove test repository dir', function(done) {
+			scm._exec('rm', ['-R', repositoryPath], done);
+		});
+	});
+});
+
+
+function getTestData(type) {
+	if (type === 'mercurial') return getMercurialData();
+}
+
+function getMercurialData() {
+	return {
+		rev0: {
+			id: 'da2762e71e87',
+			author: 'kotbegemot',
+			date: new Date('Fri May 09 22:36:41 2014 +0400').getTime(),
+			comment: 'zero revision'
+		},
+		rev1: {
+			id: '98e3a18d8193',
+			author: 'kotbegemot',
+			date: new Date('Fri May 09 22:37:19 2014 +0400').getTime(),
+			comment: 'first revision'
+		},
+		rev2: {
+			id: '9d7d08445f4c',
+			author: 'kotbegemot',
+			date: new Date('Sat May 10 03:18:20 2014 +0400').getTime(),
+			comment: 'third revision'
+		}
+	};
+}