diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..998f7fc
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,22 @@
+name: Tests
+on: [ push, pull_request ]
+
+env:
+  COVERALLS_SERVICE_NUMBER: ${{ github.run_id }}-${{ github.run_number }}-${{ github.run_attempt }}
+  COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: lts/*
+          cache: yarn
+      - run: yarn install
+      - run: yarn run coveralls
+      - name: Coveralls
+        id: coveralls
+        uses: coverallsapp/github-action@v2
+
diff --git a/.istanbul.yml b/.istanbul.yml
new file mode 100644
index 0000000..e761138
--- /dev/null
+++ b/.istanbul.yml
@@ -0,0 +1,4 @@
+instrumentation:
+  root: ./src
+  include-all-sources: true
+
diff --git a/documentation.md b/documentation.md
index 41fe224..aac9616 100644
--- a/documentation.md
+++ b/documentation.md
@@ -558,6 +558,7 @@ mergeRequestColumns:
 recordColumns:
 - user
 - iid
+- title
 - time
 
 # Add columns for each project member to issue and
diff --git a/spec/commands/report.date.shortcuts.spec.js b/spec/commands/report.date.shortcuts.spec.js
new file mode 100644
index 0000000..94be06b
--- /dev/null
+++ b/spec/commands/report.date.shortcuts.spec.js
@@ -0,0 +1,62 @@
+const Sinon = require('sinon');
+const program = require('commander');
+const { assert } = require('chai');
+const Config = require('../../src/include/file-config');
+const moment = require('moment');
+const report = require('../../src/models/report');
+
+describe('Command Report. Date shortcuts', () => {
+    it('Shortcut last_month registered', () => {
+        /** @type {Sinon.SinonMock} */
+        const stub = Sinon.mock(program);
+
+        /** @type {Sinon.SinonSpy} */
+        const spy = Sinon.spy(program, 'option');
+
+        stub.expects('parse').throws('Test exception to prevent further execution of gtt-report')
+        try {
+            require('../../src/gtt-report');
+        } catch (e) {}
+
+        try {
+            assert(spy.calledWith('--last_month'), 'last_month not registered');
+        } finally {
+            spy.restore();
+            stub.restore();
+        }
+    });
+
+    it('Shortcut last_month. Sets From and To to Config', () => {
+        program.last_month = true;
+        program.args = [];
+        let configSpy = Sinon.spy(Config.prototype, 'set');
+
+        const reportOriginal = Object.getPrototypeOf(report);
+        let reportStub = Sinon.stub().callsFake(() => {
+            throw new Error('Test exception to prevent further execution of gtt-report')
+        });
+        Object.setPrototypeOf(report, reportStub);
+
+        stub = Sinon.mock(program);
+        stub.expects('parse').returnsThis();
+
+        try {
+            require('../../src/gtt-report');
+        } catch (e) {}
+
+        try {
+            assert(
+                configSpy.calledWith('from', moment().subtract(1, 'months').startOf('month')),
+                'From is not set to Config'
+            );
+            assert(
+                configSpy.calledWith('to', moment().subtract(1, 'months').endOf('month')),
+                'To is not set to Config'
+            );
+        } finally {
+            configSpy.restore();
+            Object.setPrototypeOf(report, reportOriginal);
+            delete require.cache[require.resolve('../../src/models/report')];
+        }
+    })
+})
diff --git a/spec/models/time.spec.js b/spec/models/time.spec.js
new file mode 100644
index 0000000..a96f034
--- /dev/null
+++ b/spec/models/time.spec.js
@@ -0,0 +1,12 @@
+const config = require('./../../src/models/time');
+const expect = require('chai').expect;
+
+describe('time class', () => {
+    it('Formats numbers', () => {
+        expect((new Number(1)).padLeft(2, "0")).to.equal('01');
+        expect((new Number(12)).padLeft(2, "0")).to.equal('12');
+        expect((new Number(123)).padLeft(2, "0")).to.equal('123');
+        expect((new Number(1234)).padLeft(2, "0")).to.equal('1234');
+    });
+});
+
diff --git a/spec/models/time.title.spec.js b/spec/models/time.title.spec.js
new file mode 100644
index 0000000..1e8b726
--- /dev/null
+++ b/spec/models/time.title.spec.js
@@ -0,0 +1,36 @@
+const moment = require('moment');
+const Config = require('../../src/include/config');
+const Time = require('./../../src/models/time');
+const issue = require('../../src/models/issue');
+const mergeRequest = require('../../src/models/mergeRequest');
+const expect = require('chai').expect;
+
+describe('time class', () => {
+    it('Returns title of parent Issue', () => {
+        const config = new Config();
+        const parent = new issue(config, {title: "Test title"})
+        const time = new Time('1h', moment(), {}, parent,  config);
+
+        expect(time.title).to.be.equal("Test title");
+    });
+
+    it('Returns title of parent MergeRequest', () => {
+        const config = new Config();
+        const parent = new mergeRequest(config, {title: "Test title"})
+        const time = new Time('1h', moment(), {}, parent,  config);
+
+        expect(time.title).to.be.equal("Test title");
+    });
+
+    it('Returns Null for missed title or parent', () => {
+        const config = new Config();
+        const parent = new mergeRequest(config, {});
+        let time;
+        time = new Time('1h', moment(), {}, parent,  config);
+        expect(time.title).to.be.equal(null);
+
+        time = new Time('1h', moment(), {}, null,  config);
+        expect(time.title).to.be.equal(null);
+    });
+});
+
diff --git a/spec/output/csv.spec.js b/spec/output/csv.spec.js
new file mode 100644
index 0000000..c940b81
--- /dev/null
+++ b/spec/output/csv.spec.js
@@ -0,0 +1,89 @@
+const moment = require('moment');
+const config = require('../../src/include/config');
+const Report = require('../../src/models/report');
+const Sinon = require('sinon');
+const { describe } = require('mocha');
+const Csv = require('csv-string');
+const csv = require('../../src/output/csv');
+const { assert } = require('chai');
+
+describe('csv output', () => {
+    /**
+     * @type {Sinon.SinonSpyStatic}
+     */
+    let csvSpy;
+
+    beforeEach(() => {
+        csvSpy = Sinon.spy(Csv, 'stringify')
+    })
+
+    afterEach(() => {
+        csvSpy.restore();
+    })
+
+    it('renders projects if more than one', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user1",
+                        project_namespace: "project1",
+                        seconds: 360,
+                        date: moment('2024-06-06 00:00:00')
+                    },
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match((value) => {
+            return Array.isArray(value) && Array.isArray(value[0]) && value[0].includes('project1') && value[0].includes('project2')
+        }, 'Both projects exist')
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new csv(reportConfig, report);
+        out.make();
+        assert(csvSpy.calledWith(projectsMatcher), 'Not called properly')
+    })
+
+    it('does not render single project', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match((value) => {
+            return Array.isArray(value) && Array.isArray(value[0]) && !value[0].includes('project2')
+        }, 'Project does not exist')
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new csv(reportConfig, report);
+        out.make();
+        assert(csvSpy.calledWith(projectsMatcher), 'Not called properly')
+    })
+})
diff --git a/spec/output/markdown.spec.js b/spec/output/markdown.spec.js
new file mode 100644
index 0000000..044bafd
--- /dev/null
+++ b/spec/output/markdown.spec.js
@@ -0,0 +1,75 @@
+const moment = require('moment');
+const config = require('../../src/include/config');
+const Report = require('../../src/models/report');
+const markdown = require('../../src/output/markdown');
+const Sinon = require('sinon');
+
+describe('markdown class', () => {
+    it('Renders projects if more than one', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user1",
+                        project_namespace: "project1",
+                        seconds: 360,
+                        date: moment('2024-06-06 00:00:00')
+                    },
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match('project1').and(Sinon.match('project2'))
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new markdown(reportConfig, report);
+        let mdMock = Sinon.mock(out);
+        mdMock.expects('headline').once();
+        mdMock.expects('write').once().withArgs(projectsMatcher);
+        out.make();
+    });
+
+    it('Does not render projects if one project only', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match(function(value) {
+            return ((typeof(value) === 'string') && (/project2/.test(value) === false));
+        })
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new markdown(reportConfig, report);
+        let mdMock = Sinon.mock(out);
+        mdMock.expects('headline').once();
+        mdMock.expects('write').once().withArgs(projectsMatcher);
+        out.make();
+    });
+});
+
diff --git a/spec/output/table.spec.js b/spec/output/table.spec.js
new file mode 100644
index 0000000..d0e3767
--- /dev/null
+++ b/spec/output/table.spec.js
@@ -0,0 +1,75 @@
+const moment = require('moment');
+const config = require('../../src/include/config');
+const Report = require('../../src/models/report');
+const table = require('../../src/output/table');
+const Sinon = require('sinon');
+
+describe('Table output', () => {
+    it('Renders projects if more than one', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user1",
+                        project_namespace: "project1",
+                        seconds: 360,
+                        date: moment('2024-06-06 00:00:00')
+                    },
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match('project1').and(Sinon.match('project2'))
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new table(reportConfig, report);
+        let mdMock = Sinon.mock(out);
+        mdMock.expects('headline').once();
+        mdMock.expects('write').once().withArgs(projectsMatcher);
+        out.make();
+    });
+
+    it('Does not render single project', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match(function(value) {
+            return ((typeof(value) === 'string') && (/project2/.test(value) === false));
+        })
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new table(reportConfig, report);
+        let mdMock = Sinon.mock(out);
+        mdMock.expects('headline').once();
+        mdMock.expects('write').once().withArgs(projectsMatcher);
+        out.make();
+    });
+});
+
diff --git a/spec/output/xlsx.spec.js b/spec/output/xlsx.spec.js
new file mode 100644
index 0000000..13336fa
--- /dev/null
+++ b/spec/output/xlsx.spec.js
@@ -0,0 +1,89 @@
+const moment = require('moment');
+const config = require('../../src/include/config');
+const Report = require('../../src/models/report');
+const Sinon = require('sinon');
+const { describe } = require('mocha');
+const output = require('../../src/output/xlsx');
+const XLSX = require('xlsx');
+const { assert } = require('chai');
+
+describe('XLSX output', () => {
+    /**
+     * @type {Sinon.SinonSpyStatic}
+     */
+    let xlsxSpy;
+
+    beforeEach(() => {
+        xlsxSpy = Sinon.spy(XLSX.utils, 'aoa_to_sheet')
+    })
+
+    afterEach(() => {
+        xlsxSpy.restore();
+    })
+
+    it('renders projects if more than one', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user1",
+                        project_namespace: "project1",
+                        seconds: 360,
+                        date: moment('2024-06-06 00:00:00')
+                    },
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match((value) => {
+            return Array.isArray(value) && Array.isArray(value[0]) && value[0].includes('project1') && value[0].includes('project2')
+        }, 'Both projects exist')
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new output(reportConfig, report);
+        out.make();
+        assert(xlsxSpy.calledWith(projectsMatcher), 'Not called properly')
+    })
+
+    it('does not render single project', () => {
+        const issues = [
+            {
+                times: [
+                    {
+                        user: "user2",
+                        project_namespace: "project2",
+                        seconds: 720,
+                        date: moment('2024-06-06 00:00:00')
+                    }
+                ],
+                stats: {time_estimate: 0, total_time_spent: 0}
+            }
+        ];
+    
+        const projectsMatcher = Sinon.match((value) => {
+            return Array.isArray(value) && Array.isArray(value[0]) && !value[0].includes('project2')
+        }, 'Project does not exist')
+
+        let reportConfig = new config();
+        reportConfig.set('report', ['stats'])
+        let report = new Report(reportConfig);
+        report.issues = issues;
+        report.mergeRequests = [];
+
+        let out = new output(reportConfig, report);
+        out.make();
+        assert(xlsxSpy.calledWith(projectsMatcher), 'Not called properly')
+    })
+})
diff --git a/src/gtt-report.js b/src/gtt-report.js
index fac46da..d16b92c 100755
--- a/src/gtt-report.js
+++ b/src/gtt-report.js
@@ -40,6 +40,7 @@ program
     .option('--today', 'ignores --from and --to and queries entries for today')
     .option('--this_week', 'ignores --from and --to and queries entries for this week')
     .option('--this_month', 'ignores --from and --to and queries entries for this month')
+    .option('--last_month', 'ignores --from and --to and queries entries for last month')
     .option('-c --closed', 'include closed issues')
     .option('-m --milestone <milestone>', 'include issues from the given milestone')
     .option('--hours_per_day <hours>', 'hours per day for human readable time formats')
@@ -75,6 +76,10 @@ if (program.from_dump && fs.existsSync(program.from_dump)) {
     let data = JSON.parse(fs.readFileSync(program.from_dump));
 
     if (data.data) _.each(data.data, (v, i) => {
+        // Unsetting option "file", as it does not allow to select different output file
+        if (i === 'file') {
+            return;
+        }
         config.set(i, v);
     });
 
@@ -138,6 +143,10 @@ if (program.this_month)
     config
         .set('from', moment().startOf('month'))
         .set('to', moment().endOf('month'));
+if (program.last_month)
+    config
+        .set('from', moment().subtract(1, 'months').startOf('month'))
+        .set('to', moment().subtract(1, 'months').endOf('month'));
 
 Cli.quiet = config.get('quiet');
 Cli.verbose = config.get('_verbose');
diff --git a/src/models/time.js b/src/models/time.js
index abb0ae2..b9bfbc0 100755
--- a/src/models/time.js
+++ b/src/models/time.js
@@ -9,8 +9,15 @@ const roundedRegex = /(\[\%([^\>\]]*)\:([^\]]*)\])/ig;
 const conditionalSimpleRegex = /([0-9]*)\>(.*)/ig;
 const defaultRegex = /(\[\%([^\]]*)\])/ig;
 
+/**
+ * Adds leading zeroes to the number
+ *
+ * @param {Number} n
+ * @param {String} str
+ * @returns {String}
+ */
 Number.prototype.padLeft = function (n, str) {
-    return Array(n - String(this).length + 1).join(str || '0') + this;
+    return Array(Math.max(0, n - String(this).length + 1)).join(str || '0') + this;
 };
 
 /**
@@ -21,7 +28,7 @@ class time {
      * construct
      * @param timeString
      * @param note
-     * @param parent
+     * @param {hasTimes} parent
      * @param config
      */
     constructor(timeString, date = null, note, parent, config) {
@@ -68,6 +75,15 @@ class time {
         return time.toHumanReadable(this.seconds, this._hoursPerDay, this._timeFormat);
     }
 
+    /**
+     * Title of the linked Noteable object (Issue/MergeRequest)
+     *
+     * @returns {String|null}
+     */
+    get title() {
+        return this.parent && this.parent.title || null;
+    }
+
     get _timeFormat() {
         return this.config && this.config.get('timeFormat', 'records') ? this.config.get('timeFormat', 'records') : '';
     }
diff --git a/src/output/csv.js b/src/output/csv.js
index 58c188e..da856b0 100755
--- a/src/output/csv.js
+++ b/src/output/csv.js
@@ -17,7 +17,7 @@ class csv extends Base {
             stats[1].push(time);
         });
 
-        if (this.projects.length > 1) {
+        if (Object.keys(this.projects).length > 1) {
             _.each(this.projects, (time, name) => {
                 stats[0].push(name);
                 stats[1].push(time);
@@ -101,4 +101,4 @@ class csv extends Base {
     }
 }
 
-module.exports = csv;
\ No newline at end of file
+module.exports = csv;
diff --git a/src/output/markdown.js b/src/output/markdown.js
index 5116abd..52447c4 100755
--- a/src/output/markdown.js
+++ b/src/output/markdown.js
@@ -25,8 +25,8 @@ class markdown extends Base {
         _.each(this.stats, (time, name) => stats += `\n* **${name}**: ${time}`);
         stats += `\n`;
 
-        if (this.projects.length > 1) {
-            _.each(this.projects, (time, name) => stats += `\n* **${name.red}**: ${time}`);
+        if (Object.keys(this.projects).length > 1) {
+            _.each(this.projects, (time, name) => stats += `\n* **${name}**: ${time}`);
             stats += `\n`;
         }
 
@@ -69,4 +69,4 @@ class markdown extends Base {
     }
 }
 
-module.exports = markdown;
\ No newline at end of file
+module.exports = markdown;
diff --git a/src/output/table.js b/src/output/table.js
index 157e5dd..875f336 100755
--- a/src/output/table.js
+++ b/src/output/table.js
@@ -25,7 +25,7 @@ class table extends Base {
         _.each(this.stats, (time, name) => stats += `\n* ${name.red}: ${time}`);
         stats += `\n`;
 
-        if (this.projects.length > 1) {
+        if (Object.keys(this.projects).length > 1) {
             _.each(this.projects, (time, name) => stats += `\n* ${name.red}: ${time}`);
             stats += `\n`;
         }
@@ -65,4 +65,4 @@ class table extends Base {
     }
 }
 
-module.exports = table;
\ No newline at end of file
+module.exports = table;
diff --git a/src/output/xlsx.js b/src/output/xlsx.js
index 9581ad1..6e8ab45 100644
--- a/src/output/xlsx.js
+++ b/src/output/xlsx.js
@@ -19,7 +19,7 @@ class xlsx extends Base {
             stats[1].push(time);
         });
 
-        if (this.projects.length > 1) {
+        if (Object.keys(this.projects).length > 1) {
             _.each(this.projects, (time, name) => {
                 stats[0].push(name);
                 stats[1].push(time);