diff --git a/dist/index.js b/dist/index.js
index 16f3f88a..5fb5226b 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1137,7 +1137,7 @@ function findPyPyToolCache(pythonVersion, pypyVersion, architecture) {
     if (installDir) {
         // 'tc.find' finds tool based on Python version but we also need to check
         // whether PyPy version satisfies requested version.
-        resolvedPythonVersion = getPyPyVersionFromPath(installDir);
+        resolvedPythonVersion = utils_1.getPyPyVersionFromPath(installDir);
         resolvedPyPyVersion = pypyInstall.readExactPyPyVersion(installDir);
         const isPyPyVersionSatisfies = semver.satisfies(resolvedPyPyVersion, pypyVersion);
         if (!isPyPyVersionSatisfies) {
@@ -1151,11 +1151,11 @@ function findPyPyToolCache(pythonVersion, pypyVersion, architecture) {
     }
     return { installDir, resolvedPythonVersion, resolvedPyPyVersion };
 }
+exports.findPyPyToolCache = findPyPyToolCache;
 function parsePyPyVersion(versionSpec) {
     const versions = versionSpec.split('-').filter(item => !!item);
-    if (versions.length < 2) {
-        core.setFailed("Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy-<python-version>'. See README for examples and documentation.");
-        process.exit();
+    if (versions.length < 2 || versions[0] != 'pypy') {
+        throw new Error("Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy-<python-version>'. See README for examples and documentation.");
     }
     const pythonVersion = versions[1];
     let pypyVersion;
@@ -1166,17 +1166,14 @@ function parsePyPyVersion(versionSpec) {
         pypyVersion = 'x';
     }
     if (!utils_1.validateVersion(pythonVersion) || !utils_1.validateVersion(pypyVersion)) {
-        core.setFailed("Invalid 'version' property for PyPy. Both Python version and PyPy versions should satisfy SemVer notation. See README for examples and documentation.");
-        process.exit();
+        throw new Error("Invalid 'version' property for PyPy. Both Python version and PyPy versions should satisfy SemVer notation. See README for examples and documentation.");
     }
     return {
         pypyVersion: pypyVersion,
         pythonVersion: pythonVersion
     };
 }
-function getPyPyVersionFromPath(installDir) {
-    return path.basename(path.dirname(installDir));
-}
+exports.parsePyPyVersion = parsePyPyVersion;
 
 
 /***/ }),
@@ -2348,6 +2345,10 @@ function isNightlyKeyword(pypyVersion) {
     return pypyVersion === 'nightly';
 }
 exports.isNightlyKeyword = isNightlyKeyword;
+function getPyPyVersionFromPath(installDir) {
+    return path.basename(path.dirname(installDir));
+}
+exports.getPyPyVersionFromPath = getPyPyVersionFromPath;
 
 
 /***/ }),
@@ -2781,13 +2782,11 @@ function installPyPy(pypyVersion, pythonVersion, architecture) {
         let downloadDir;
         const releases = yield getAvailablePyPyVersions();
         if (!releases || releases.length === 0) {
-            core.setFailed('No release was found in PyPy version.json');
-            process.exit();
+            throw new Error('No release was found in PyPy version.json');
         }
         const releaseData = findRelease(releases, pythonVersion, pypyVersion, architecture);
         if (!releaseData || !releaseData.foundAsset) {
-            core.setFailed(`PyPy version ${pythonVersion} (${pypyVersion}) with arch ${architecture} not found`);
-            process.exit();
+            throw new Error(`PyPy version ${pythonVersion} (${pypyVersion}) with arch ${architecture} not found`);
         }
         const { foundAsset, resolvedPythonVersion, resolvedPyPyVersion } = releaseData;
         let downloadUrl = `${foundAsset.download_url}`;
@@ -2822,8 +2821,7 @@ function getAvailablePyPyVersions() {
         const http = new httpm.HttpClient('tool-cache');
         const response = yield http.getJson(url);
         if (!response.result) {
-            core.setFailed(`Unable to retrieve the list of available PyPy versions from '${url}'`);
-            process.exit();
+            throw new Error(`Unable to retrieve the list of available PyPy versions from '${url}'`);
         }
         return response.result;
     });
@@ -2844,7 +2842,6 @@ function installPip(pythonLocation) {
         core.info('Installing and updating pip');
         const pythonBinary = path.join(pythonLocation, 'python');
         yield exec.exec(`${pythonBinary} -m ensurepip`);
-        // TO-DO should we skip updating of pip ?
         yield exec.exec(`${pythonLocation}/python -m pip install --ignore-installed pip`);
     });
 }
@@ -2873,6 +2870,7 @@ function findRelease(releases, pythonVersion, pypyVersion, architecture) {
         resolvedPyPyVersion: foundRelease.pypy_version
     };
 }
+exports.findRelease = findRelease;
 // helper functions
 /**
  * In tool-cache, we put PyPy to '<toolcache_root>/PyPy/<python_version>/x64'
diff --git a/src/find-pypy.ts b/src/find-pypy.ts
index 6cb30a8e..1fc44398 100644
--- a/src/find-pypy.ts
+++ b/src/find-pypy.ts
@@ -1,6 +1,6 @@
 import * as path from 'path';
 import * as pypyInstall from './install-pypy';
-import {IS_WINDOWS, validateVersion} from './utils';
+import {IS_WINDOWS, validateVersion, getPyPyVersionFromPath} from './utils';
 
 import * as semver from 'semver';
 import * as core from '@actions/core';
@@ -54,7 +54,7 @@ export async function findPyPyVersion(
   return {resolvedPyPyVersion, resolvedPythonVersion};
 }
 
-function findPyPyToolCache(
+export function findPyPyToolCache(
   pythonVersion: string,
   pypyVersion: string,
   architecture: string
@@ -89,14 +89,13 @@ function findPyPyToolCache(
   return {installDir, resolvedPythonVersion, resolvedPyPyVersion};
 }
 
-function parsePyPyVersion(versionSpec: string): IPyPyVersionSpec {
+export function parsePyPyVersion(versionSpec: string): IPyPyVersionSpec {
   const versions = versionSpec.split('-').filter(item => !!item);
 
-  if (versions.length < 2) {
-    core.setFailed(
+  if (versions.length < 2 || versions[0] != 'pypy') {
+    throw new Error(
       "Invalid 'version' property for PyPy. PyPy version should be specified as 'pypy-<python-version>'. See README for examples and documentation."
     );
-    process.exit();
   }
 
   const pythonVersion = versions[1];
@@ -108,10 +107,9 @@ function parsePyPyVersion(versionSpec: string): IPyPyVersionSpec {
   }
 
   if (!validateVersion(pythonVersion) || !validateVersion(pypyVersion)) {
-    core.setFailed(
+    throw new Error(
       "Invalid 'version' property for PyPy. Both Python version and PyPy versions should satisfy SemVer notation. See README for examples and documentation."
     );
-    process.exit();
   }
 
   return {
@@ -119,7 +117,3 @@ function parsePyPyVersion(versionSpec: string): IPyPyVersionSpec {
     pythonVersion: pythonVersion
   };
 }
-
-function getPyPyVersionFromPath(installDir: string) {
-  return path.basename(path.dirname(installDir));
-}
diff --git a/src/install-pypy.ts b/src/install-pypy.ts
index 8d7306ba..cf006e0d 100644
--- a/src/install-pypy.ts
+++ b/src/install-pypy.ts
@@ -24,8 +24,7 @@ export async function installPyPy(
 
   const releases = await getAvailablePyPyVersions();
   if (!releases || releases.length === 0) {
-    core.setFailed('No release was found in PyPy version.json');
-    process.exit();
+    throw new Error('No release was found in PyPy version.json');
   }
 
   const releaseData = findRelease(
@@ -36,10 +35,9 @@ export async function installPyPy(
   );
 
   if (!releaseData || !releaseData.foundAsset) {
-    core.setFailed(
+    throw new Error(
       `PyPy version ${pythonVersion} (${pypyVersion}) with arch ${architecture} not found`
     );
-    process.exit();
   }
 
   const {foundAsset, resolvedPythonVersion, resolvedPyPyVersion} = releaseData;
@@ -85,10 +83,9 @@ async function getAvailablePyPyVersions() {
 
   const response = await http.getJson<IPyPyManifestRelease[]>(url);
   if (!response.result) {
-    core.setFailed(
+    throw new Error(
       `Unable to retrieve the list of available PyPy versions from '${url}'`
     );
-    process.exit();
   }
 
   return response.result;
@@ -123,13 +120,13 @@ async function installPip(pythonLocation: string) {
   core.info('Installing and updating pip');
   const pythonBinary = path.join(pythonLocation, 'python');
   await exec.exec(`${pythonBinary} -m ensurepip`);
-  // TO-DO should we skip updating of pip ?
+
   await exec.exec(
     `${pythonLocation}/python -m pip install --ignore-installed pip`
   );
 }
 
-function findRelease(
+export function findRelease(
   releases: IPyPyManifestRelease[],
   pythonVersion: string,
   pypyVersion: string,
diff --git a/src/utils.ts b/src/utils.ts
index b164268d..52143b34 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -49,3 +49,7 @@ export function validateVersion(version: string) {
 export function isNightlyKeyword(pypyVersion: string) {
   return pypyVersion === 'nightly';
 }
+
+export function getPyPyVersionFromPath(installDir: string) {
+  return path.basename(path.dirname(installDir));
+}