implement unit-tests

Author: Maxim Lobanov

.github/workflows/test.yml

@@ -69,4 +69,7 @@ jobs:
     - name: setup-cocoapods
       uses: ./
       with:
-        version: latest
+        version: latest
+
+    - name: Validate version
+      run: pod --version

README.md

@@ -0,0 +1,25 @@
+# setup-cocoapods
+This action sets up specific version of Cocoapods in GitHub Actions workflow.  
+
+# Available parameters
+| Argument      | Description                             | Supported format           |
+|---------------|-----------------------------------------|----------------------------|
+| version       | Specify version of Cocoapods to install | `latest`, `1.5.2`, `1.9.1` |
+
+# Usage
+```
+name: CI
+on: [push]
+jobs:
+  build:
+    name: Setup Cocoapods
+    runs-on: macos-latest
+    steps:
+    - name: setup-cocoapods
+      uses: maxim-lobanov/setup-cocoapods
+      with:
+        version: 1.9.1
+```
+
+# License
+The scripts and documentation in this project are released under the [MIT License](LICENSE)

__tests__/installer.test.ts

@@ -0,0 +1,33 @@
+import * as exec from "@actions/exec";
+import { CocoapodsInstaller } from "../src/installer";
+
+jest.mock("@actions/exec");
+
+describe("CocoapodsInstaller", () => {
+    describe("install", () => {
+        let execCommandSpy: jest.SpyInstance;
+
+        beforeEach(() => {
+            execCommandSpy = jest.spyOn(exec, "exec");
+        });
+
+        afterEach(() => {
+            jest.resetAllMocks();
+            jest.clearAllMocks();
+        });
+
+        it("replace existing version", async () => {
+            CocoapodsInstaller["getInstalledVersion"] = jest.fn().mockReturnValue("1.8.5");
+            await CocoapodsInstaller.install("1.9.1");
+            expect(execCommandSpy).toHaveBeenCalledWith("gem", ["uninstall", "cocoapods", expect.any(String), expect.any(String)]);
+            expect(execCommandSpy).toHaveBeenCalledWith("gem", ["install", "cocoapods", expect.any(String), expect.any(String)]);
+        });
+
+        it("version has already installed", async () => {
+            CocoapodsInstaller["getInstalledVersion"] = jest.fn().mockReturnValue("1.9.1");
+            await CocoapodsInstaller.install("1.9.1");
+            expect(execCommandSpy).toHaveBeenCalledTimes(0);
+        });
+
+    });
+});

dist/index.js

@@ -1506,16 +1506,17 @@ const exec = __importStar(__webpack_require__(986));
 const core = __importStar(__webpack_require__(470));
 class CocoapodsInstaller {
     static async install(versionSpec) {
+        // Checking pre-installed version of Cocoapods
         const installedVersion = await this.getInstalledVersion();
         if (installedVersion === versionSpec) {
             core.info(`Cocoapods ${versionSpec} has already installed. Not needed to re-install.`);
             return;
         }
-        await exec.exec("gem", ["uninstll", "cocoapods", "--all", "--executables"]);
-        const installExitCode = await exec.exec("gem", ["install", "cocoapods", "-v", versionSpec]);
-        if (installExitCode !== 0) {
-            throw new Error(`Error during install Cocoapods ${versionSpec}`);
-        }
+        // Remove pre-installed version of Cocoapods
+        exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables"]);
+        // Install new version of Cocoapods
+        const versionArguments = (versionSpec === "latest") ? [] : ["-v", versionSpec];
+        await exec.exec("gem", ["install", "cocoapods", ...versionArguments]);
         core.info(`Cocoapods ${versionSpec} has installed successfully`);
     }
     static getVersionFromPodfile(podfilePath) {
@@ -1573,7 +1574,7 @@ const run = async () => {
         if (!!versionInput === !!podfilePathInput) {
             throw new Error("Invalid input parameters. Only 'version' or 'podfile-path' should be defined");
         }
-        const versionSpec = versionInput || installer_1.CocoapodsInstaller.getVersionFromPodfile(podfilePathInput);
+        const versionSpec = versionInput; // || CocoapodsInstaller.getVersionFromPodfile(podfilePathInput);
         if (!versionSpec) {
             throw new Error(`Invalid version format '${versionSpec}'`);
         }

src/installer.ts

@@ -7,18 +7,19 @@ import { ExecOptions } from "@actions/exec/lib/interfaces";
 
 export class CocoapodsInstaller {
     public static async install(versionSpec: string): Promise<void> {
+        // Checking pre-installed version of Cocoapods
         const installedVersion = await this.getInstalledVersion();
         if (installedVersion === versionSpec) {
             core.info(`Cocoapods ${versionSpec} has already installed. Not needed to re-install.`);
             return;
         }
 
-        await exec.exec("gem", ["uninstll", "cocoapods", "--all", "--executables"]);
+        // Remove pre-installed version of Cocoapods
+        exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables"]);
 
-        const installExitCode = await exec.exec("gem", ["install", "cocoapods", "-v", versionSpec]);
-        if (installExitCode !== 0) {
-            throw new Error(`Error during install Cocoapods ${versionSpec}`);
-        }
+        // Install new version of Cocoapods
+        const versionArguments = (versionSpec === "latest") ? [] : ["-v", versionSpec];
+        await exec.exec("gem", ["install", "cocoapods", ...versionArguments]);
 
         core.info(`Cocoapods ${versionSpec} has installed successfully`);
     }

src/setup-cocoapods.ts

@@ -14,7 +14,7 @@ const run = async (): Promise<void> => {
             throw new Error("Invalid input parameters. Only 'version' or 'podfile-path' should be defined");
         }
 
-        const versionSpec = versionInput || CocoapodsInstaller.getVersionFromPodfile(podfilePathInput);
+        const versionSpec = versionInput;// || CocoapodsInstaller.getVersionFromPodfile(podfilePathInput);
         if (!versionSpec) {
             throw new Error(`Invalid version format '${versionSpec}'`);
         }