diff --git a/package-lock.json b/package-lock.json
index 2a76b058..43cf6583 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,6 +13,56 @@
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       }
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+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.5.0.tgz",
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+        "lodash": "^4.17.11",
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+          "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
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+        }
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+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.1.0.tgz",
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+      "dev": true,
+      "requires": {
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+        "@babel/template": "^7.1.0",
+        "@babel/types": "^7.0.0"
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+    "@babel/helper-get-function-arity": {
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+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
+    },
+    "@babel/helper-split-export-declaration": {
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+      "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.4.4.tgz",
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+      "dev": true,
+      "requires": {
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+      }
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@@ -24,6 +74,12 @@
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+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.5.0.tgz",
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+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.5.0.tgz",
@@ -33,6 +89,62 @@
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+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.4.4.tgz",
+      "integrity": "sha512-CiGzLN9KgAvgZsnivND7rkA+AeJ9JB0ciPOD4U59GKbQP2iQl+olF1l76kJOupqidozfZ32ghwBEJDhnk9MEcw==",
+      "dev": true,
+      "requires": {
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+        "@babel/parser": "^7.4.4",
+        "@babel/types": "^7.4.4"
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+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.5.0.tgz",
+      "integrity": "sha512-SnA9aLbyOCcnnbQEGwdfBggnc142h/rbqqsXcaATj2hZcegCl903pUD/lfpsNBlBSuWow/YDfRyJuWi2EPR5cg==",
+      "dev": true,
+      "requires": {
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+        "@babel/generator": "^7.5.0",
+        "@babel/helper-function-name": "^7.1.0",
+        "@babel/helper-split-export-declaration": "^7.4.4",
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+        "globals": "^11.1.0",
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+          "dev": true,
+          "requires": {
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+          "dev": true
+        }
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.5.0.tgz",
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+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.1.7.tgz",
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+      "dev": true
+    },
+    "@types/chai-as-promised": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/@types/chai-as-promised/-/chai-as-promised-7.1.0.tgz",
+      "integrity": "sha512-MFiW54UOSt+f2bRw8J7LgQeIvE/9b4oGvwU7XW30S9QGAiHGnU/fmiOprsyMkdmH2rl8xSPc0/yrQw8juXU6bQ==",
+      "dev": true,
+      "requires": {
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+    "@types/mocha": {
+      "version": "5.2.7",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-5.2.7.tgz",
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@@ -393,6 +526,11 @@
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@@ -440,6 +578,18 @@
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+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
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@@ -448,6 +598,21 @@
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+      "dev": true,
+      "requires": {
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+      "resolved": "https://registry.npmjs.org/archy/-/archy-1.0.0.tgz",
+      "integrity": "sha1-+cjBN1fMHde8N5rHeyxipcKGjEA=",
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       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
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+    "assertion-error": {
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+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
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@@ -546,6 +717,12 @@
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+        "check-error": "^1.0.2",
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+        "pathval": "^1.1.0",
+        "type-detect": "^4.0.5"
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+    "chai-as-promised": {
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+      "resolved": "https://registry.npmjs.org/chai-as-promised/-/chai-as-promised-7.1.1.tgz",
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@@ -590,16 +802,39 @@
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+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
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@@ -835,11 +1076,54 @@
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@@ -904,6 +1188,33 @@
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+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "5.3.1",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+          "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+          "dev": true
+        },
+        "find-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^3.0.0"
+          }
+        },
+        "get-caller-file": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
+          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
+          "dev": true
+        },
+        "locate-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.0.tgz",
+          "integrity": "sha512-pZbTJpoUsCzV48Mc9Nh51VbwO0X9cuPFE8gYwx9BTCt9SF8/b7Zljd2fVgOxhIF/HDTKgpVzs+GPhyKfjLLFRQ==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "p-try": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+          "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+          "dev": true
+        },
+        "require-main-filename": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
+          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
+          "dev": true
+        },
+        "yargs": {
+          "version": "12.0.5",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+          "dev": true,
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^3.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^11.1.1"
+          }
+        },
+        "yargs-parser": {
+          "version": "11.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
     "yn": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.0.tgz",
diff --git a/package.json b/package.json
index d793a944..2eb446d9 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "prepublishOnly": "npm ci && npm run build",
     "preversion": "npm run prepublishOnly",
     "push": "git push && git push origin \"v$npm_package_version\"",
+    "test": "nyc mocha --require ts-node/register --ui mocha-typescript 'test/**/*.spec.ts'",
     "tslint": "tslint -p tsconfig.json -c tslint.json 'src/**/*.ts'"
   },
   "author": "Karl-Philipp Wulfert <krlwlfrt@gmail.com>",
@@ -33,14 +34,24 @@
     "@types/glob": "7.1.1",
     "@types/mustache": "0.8.32",
     "@types/node": "10.14.12",
+    "@types/tmp": "0.1.0",
     "commander": "2.20.0",
     "glob": "7.1.4",
     "moment": "2.24.0",
-    "mustache": "3.0.1"
+    "mustache": "3.0.1",
+    "tmp": "0.1.0"
   },
   "devDependencies": {
     "@openstapps/configuration": "0.21.0",
+    "@types/chai": "4.1.7",
+    "@types/chai-as-promised": "7.1.0",
+    "@types/mocha": "5.2.7",
+    "chai": "4.2.0",
+    "chai-as-promised": "7.1.1",
     "conventional-changelog-cli": "2.0.21",
+    "mocha": "6.1.4",
+    "mocha-typescript": "1.1.17",
+    "nyc": "14.1.1",
     "prepend-file-cli": "1.0.6",
     "rimraf": "2.6.3",
     "ts-node": "8.3.0",
@@ -52,5 +63,27 @@
   "typings": "lib/common.d.ts",
   "bin": {
     "openstapps-projectmanagement": "lib/cli.js"
+  },
+  "nyc": {
+    "all": true,
+    "branches": 95,
+    "check-coverage": true,
+    "include": [
+      "src/tasks/get-used-version.ts"
+    ],
+    "extension": [
+      ".ts"
+    ],
+    "functions": 95,
+    "lines": 95,
+    "per-file": true,
+    "reporter": [
+      "html",
+      "text-summary"
+    ],
+    "require": [
+      "ts-node/register"
+    ],
+    "statements": 95
   }
 }
diff --git a/src/tasks/get-used-version.ts b/src/tasks/get-used-version.ts
index 5a6af62f..3736bb7a 100644
--- a/src/tasks/get-used-version.ts
+++ b/src/tasks/get-used-version.ts
@@ -53,6 +53,7 @@ export async function getUsedVersion(path: PathLike, dependency: string): Promis
 export async function getUsedVersionMajorMinor(path: PathLike, dependency: string): Promise<string> {
   const versionMatch = (await getUsedVersion(path, dependency)).match(/([0-9]+\.[0-9]+)\.[0-9]+/);
 
+  // istanbul ignore if
   if (versionMatch === null) {
     throw new Error(`Used version of '${dependency}' of project in '${path}' could not be determined.`);
   }
diff --git a/test/get-used-versions.spec.ts b/test/get-used-versions.spec.ts
new file mode 100644
index 00000000..5203b949
--- /dev/null
+++ b/test/get-used-versions.spec.ts
@@ -0,0 +1,43 @@
+import * as chai from 'chai';
+import {expect} from 'chai';
+import * as chaiAsPromised from 'chai-as-promised';
+import {execSync} from 'child_process';
+import {suite, test} from 'mocha-typescript';
+import {join} from 'path';
+import {dirSync} from 'tmp';
+import {getUsedVersion, getUsedVersionMajorMinor} from '../src/tasks/get-used-version';
+
+chai.use(chaiAsPromised);
+chai.should();
+
+@suite()
+export class GetUsedVersionsSpec {
+  @test
+  async 'does not depend on core'() {
+    return getUsedVersion(join(__dirname, '..'), '@openstapps/core').should.eventually.be.rejected;
+  }
+
+  @test
+  async 'not a Node.js project'() {
+    return getUsedVersion(__dirname, '@openstapps/core').should.eventually.be.rejected;
+  }
+
+  @test
+  async 'has no dependencies'() {
+    const temporaryDirectory = dirSync();
+
+    execSync(`cd ${temporaryDirectory.name}; npm init -y`);
+
+    await getUsedVersion(temporaryDirectory.name, '@openstapps/core').should.eventually.be.rejected;
+  }
+
+  @test
+  async 'get used version'() {
+    expect(await getUsedVersion(join(__dirname, '..'), '@krlwlfrt/async-pool')).to.be.equal('0.1.0');
+  }
+
+  @test
+  async 'get used version major minor'() {
+    expect(await getUsedVersionMajorMinor(join(__dirname, '..'), '@krlwlfrt/async-pool')).to.be.equal('0.1');
+  }
+}