Add architecture option.

README.md

@@ -30,6 +30,17 @@ steps:
 - run: dotnet build <my project>
 ```
 
+Architecture:
+```yaml
+steps:
+- uses: actions/checkout@main
+- uses: actions/setup-dotnet@v1
+  with:
+    dotnet-version: '3.1.x' # SDK Version to use; x will use the latest version of the 3.1 channel
+    dotnet-achitecture: 'x86'
+- run: dotnet build <my project>
+```
+
 Matrix Testing:
 ```yaml
 jobs:

__tests__/installer.test.ts

@@ -33,7 +33,7 @@ describe('installer tests', () => {
   }, 30000);
 
   it('Acquires version of dotnet if no matching version is installed', async () => {
-    await getDotnet('3.1.201');
+    await getDotnet('3.1.201', null);
     expect(fs.existsSync(path.join(toolDir, 'sdk', '3.1.201'))).toBe(true);
     if (IS_WINDOWS) {
       expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
@@ -48,7 +48,7 @@ describe('installer tests', () => {
   }, 600000); //This needs some time to download on "slower" internet connections
 
   it('Acquires generic version of dotnet if no matching version is installed', async () => {
-    await getDotnet('3.1');
+    await getDotnet('3.1', null);
     var directory = fs
       .readdirSync(path.join(toolDir, 'sdk'))
       .filter(fn => fn.startsWith('3.1.'));
@@ -65,10 +65,28 @@ describe('installer tests', () => {
     expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
   }, 600000); //This needs some time to download on "slower" internet connections
 
+  it('Acquires generic version of dotnet if no matching version is installed', async () => {
+    await getDotnet('3.1', 'x86');
+    var directory = fs
+      .readdirSync(path.join(toolDir, 'sdk'))
+      .filter(fn => fn.startsWith('3.1.'))
+    expect(directory.length > 0).toBe(true);
+    if (IS_WINDOWS) {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet.exe'))).toBe(true);
+    } else {
+      expect(fs.existsSync(path.join(toolDir, 'dotnet'))).toBe(true);
+    }
+
+    expect(process.env.DOTNET_ROOT).toBeDefined;
+    expect(process.env.PATH).toBeDefined;
+    expect(process.env.DOTNET_ROOT).toBe(toolDir);
+    expect(process.env.PATH?.startsWith(toolDir)).toBe(true);
+  }, 600000); //This needs some time to download on "slower" internet connections
+
   it('Throws if no location contains correct dotnet version', async () => {
     let thrown = false;
     try {
-      await getDotnet('1000.0.0');
+      await getDotnet('1000.0.0', null);
     } catch {
       thrown = true;
     }
@@ -123,7 +141,7 @@ function normalizeFileContents(contents: string): string {
     .replace(new RegExp('\r', 'g'), '\n');
 }
 
-async function getDotnet(version: string): Promise<void> {
-  const dotnetInstaller = new installer.DotnetCoreInstaller(version);
+async function getDotnet(version: string, architecture: string): Promise<void> {
+  const dotnetInstaller = new installer.DotnetCoreInstaller(version, architecture);
   await dotnetInstaller.installDotnet();
 }

src/installer.ts

@@ -76,8 +76,9 @@ export class DotNetVersionInfo {
 }
 
 export class DotnetCoreInstaller {
-  constructor(version: string) {
+  constructor(version: string, architecture:string) {
     this.version = version;
+    this.architecture = architecture;
   }
 
   public async installDotnet() {
@@ -150,6 +151,10 @@ export class DotnetCoreInstaller {
         scriptArguments.push('--version', calculatedVersion);
       }
 
+      if (this.architecture) {
+        scriptArguments.push('--architecture', this.architecture);
+      }
+
       // process.env must be explicitly passed in for DOTNET_INSTALL_DIR to be used
       resultCode = await exec.exec(`"${scriptPath}"`, scriptArguments, {
         listeners: {
@@ -273,6 +278,7 @@ export class DotnetCoreInstaller {
   }
 
   private version: string;
+  private architecture: string;
 }
 
 const DotNetCoreIndexUrl: string =

src/setup-dotnet.ts

@@ -14,6 +14,7 @@ export async function run() {
     // Proxy, auth, (etc) are still set up, even if no version is identified
     //
     let version = core.getInput('dotnet-version');
+    let architecture = core.getInput('dotnet-architecture');
     if (!version) {
       // Try to fall back to global.json
       core.debug('No version found, trying to find version from global.json');
@@ -29,7 +30,7 @@ export async function run() {
     }
 
     if (version) {
-      const dotnetInstaller = new installer.DotnetCoreInstaller(version);
+      const dotnetInstaller = new installer.DotnetCoreInstaller(version, architecture);
       await dotnetInstaller.installDotnet();
     }