Add dotnet-version: latest support with dotnet-channel input

.github/workflows/e2e-tests.yml

@@ -495,7 +495,7 @@ jobs:
   test-proxy:
     runs-on: ubuntu-22.04
     container:
-      image: mcr.microsoft.com/devcontainers/dotnet:10.0
+      image: ubuntu:22.04
       options: --dns 127.0.0.1
     services:
       squid-proxy:
@@ -508,6 +508,15 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+      - name: Install Powershell
+        run: |
+          apt-get update
+          apt-get install -y wget apt-transport-https software-properties-common
+          wget -q "https://packages.microsoft.com/config/ubuntu/$(lsb_release -rs)/packages-microsoft-prod.deb"
+          dpkg -i packages-microsoft-prod.deb
+          rm packages-microsoft-prod.deb
+          apt-get update
+          apt-get install -y powershell
       - name: Clear toolcache
         shell: pwsh
         run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
@@ -649,3 +658,44 @@ jobs:
       - name: Verify dotnet
         shell: pwsh
         run: __tests__/verify-dotnet.ps1 -Patterns "^8.0.416$", "^9.0.308$", "^10.0.101$", "^8.0"
+
+  test-setup-latest-version:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet latest
+        uses: ./
+        with:
+          dotnet-version: latest
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 -Patterns "^\d+\.\d+\.\d+"
+
+  test-setup-latest-with-channel-abcxx:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [macos-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Setup dotnet latest with A.B.Cxx channel
+        uses: ./
+        with:
+          dotnet-version: latest
+          dotnet-channel: '9.0.1xx'
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 -Patterns "^9\.0\.1\d{2}"

README.md

@@ -57,7 +57,30 @@ The `dotnet-version` input supports following syntax:
 - **A.B** or **A.B.x** (e.g. 8.0, 8.0.x) - installs the latest patch version of .NET SDK on the channel `8.0`, including prerelease versions (preview, rc)
 - **A** or **A.x** (e.g. 8, 8.x) - installs the latest minor version of the specified major tag, including prerelease versions (preview, rc)
 - **A.B.Cxx** (e.g. 8.0.4xx) - available since `.NET 5.0` release. Installs the latest version of the specific SDK release, including prerelease versions (preview, rc). 
+- **latest** - dynamically resolves to the highest active .NET SDK version. By default, it installs the latest **stable (GA)** version (excluding previews and end-of-life releases). Can be combined with `dotnet-channel` and `dotnet-quality`.
 
+## Using with `dotnet-channel` input
+
+The optional `dotnet-channel` input specifies the source channel for the installation. Supported values:
+
+| Value | Description |
+|-------|-------------|
+| `STS` | The most recent Standard Term Support release |
+| `LTS` | The most recent Long Term Support release |
+| `A.B` (e.g. `8.0`) | A specific release channel |
+| `A.B.Cxx` (e.g. `8.0.1xx`) | A specific SDK release (available since 5.0) |
+
+> **Note**: The `dotnet-channel` input is only applied when `dotnet-version` is set to `latest`. If used with a specific version, a warning will be logged and the channel input will be ignored.
+
+**Install latest LTS version:**
+```yaml
+steps:
+- uses: actions/checkout@v6
+- uses: actions/setup-dotnet@v5
+  with:
+    dotnet-version: latest
+    dotnet-channel: LTS
+```
 
 ## Using the `architecture` input
 Using the architecture input, it is possible to specify the required .NET SDK architecture. Possible values:  `x64`, `x86`, `arm64`, `amd64`, `arm`, `s390x`, `ppc64le`, `riscv64`. If the input is not specified, the architecture defaults to the host OS architecture (not all of the architectures are available on all platforms).
@@ -77,20 +100,33 @@ steps:
 ```
 
 ## Using the `dotnet-quality` input
-This input sets up the action to install the latest build of the specified quality in the channel. The possible values of `dotnet-quality` are: **daily**, **signed**, **validated**, **preview**, **ga**.
 
-> **Note**: `dotnet-quality` input can be used only with .NET SDK version in 'A.B', 'A.B.x', 'A', 'A.x' and 'A.B.Cxx' formats where the major version is higher than 5. In other cases, `dotnet-quality` input will be ignored.
+The `dotnet-quality` input installs the latest build of the specified quality in the channel. Supported values: `daily`, `preview`, `ga`.
+
+> **Note**: When used with a specific SDK version, `dotnet-quality` supports only `A.B`, `A.B.x`, `A`, `A.x`, and `A.B.Cxx` formats where the major version is higher than 5. For all other formats, `dotnet-quality` will be ignored.
 
 ```yml
 steps:
 - uses: actions/checkout@v6
 - uses: actions/setup-dotnet@v5
   with:
     dotnet-version: '8.0.x'
-    dotnet-quality: 'preview'
+    dotnet-quality: 'daily'
 - run: dotnet build <my project>
 ```
 
+`dotnet-quality` can also be combined with `dotnet-version: latest` and `dotnet-channel` to target specific builds such as the latest `daily` build from the `LTS` channel.
+
+```yaml
+steps:
+- uses: actions/checkout@v6
+- uses: actions/setup-dotnet@v5
+  with:
+    dotnet-version: latest
+    dotnet-channel: LTS
+    dotnet-quality: daily
+```
+
 ## Using the `global-json-file` input
 `setup-dotnet` action can read .NET SDK version from a `global.json` file. Input `global-json-file` is used for specifying the path to the `global.json`. If the file that was supplied to `global-json-file` input doesn't exist, the action will fail with error.
 
@@ -371,4 +407,4 @@ The scripts and documentation in this project are released under the [MIT Licens
 
 ## Contributions
 
-Contributions are welcome! See [Contributor's Guide](docs/contributors.md)
+Contributions are welcome! See [Contributor's Guide](docs/contributors.md)

__tests__/installer.test.ts

@@ -9,7 +9,6 @@ import * as io from '@actions/io';
 import * as installer from '../src/installer';
 
 import {IS_WINDOWS} from '../src/utils';
-import {QualityOptions} from '../src/setup-dotnet';
 
 describe('installer tests', () => {
   const env = process.env;
@@ -40,7 +39,7 @@ describe('installer tests', () => {
 
       it('should throw the error in case of non-zero exit code of the installation script. The error message should contain logs.', async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const errorMessage = 'fictitious error message!';
 
         getExecOutputSpy.mockImplementation(() => {
@@ -62,7 +61,7 @@ describe('installer tests', () => {
 
       it('should return version of .NET SDK after installation complete', async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
         getExecOutputSpy.mockImplementation(() => {
           return Promise.resolve({
@@ -84,7 +83,7 @@ describe('installer tests', () => {
 
       it(`should supply 'version' argument to the installation script if supplied version is in A.B.C syntax`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
         getExecOutputSpy.mockImplementation(() => {
@@ -122,7 +121,7 @@ describe('installer tests', () => {
 
       it(`should warn if the 'quality' input is set and the supplied version is in A.B.C syntax`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = 'ga' as QualityOptions;
+        const inputQuality = 'ga';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
         getExecOutputSpy.mockImplementation(() => {
           return Promise.resolve({
@@ -147,7 +146,7 @@ describe('installer tests', () => {
 
       it(`should warn if the 'quality' input is set and version isn't in A.B.C syntax but major tag is lower then 6`, async () => {
         const inputVersion = '3.1';
-        const inputQuality = 'ga' as QualityOptions;
+        const inputQuality = 'ga';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
         getExecOutputSpy.mockImplementation(() => {
@@ -174,7 +173,7 @@ describe('installer tests', () => {
       each(['10', '10.0', '10.0.x', '10.0.*', '10.0.X']).test(
         `should supply 'quality' argument to the installation script if quality input is set and version (%s) is not in A.B.C syntax`,
         async inputVersion => {
-          const inputQuality = 'ga' as QualityOptions;
+          const inputQuality = 'ga';
           const exitCode = 0;
           const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
           getExecOutputSpy.mockImplementation(() => {
@@ -214,7 +213,7 @@ describe('installer tests', () => {
       each(['10', '10.0', '10.0.x', '10.0.*', '10.0.X']).test(
         `should supply 'channel' argument to the installation script if version (%s) isn't in A.B.C syntax`,
         async inputVersion => {
-          const inputQuality = '' as QualityOptions;
+          const inputQuality = '';
           const exitCode = 0;
           const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
           getExecOutputSpy.mockImplementation(() => {
@@ -255,7 +254,7 @@ describe('installer tests', () => {
         it(`should supply '-ProxyAddress' argument to the installation script if env.variable 'https_proxy' is set`, async () => {
           process.env['https_proxy'] = 'https://proxy.com';
           const inputVersion = '10.0.101';
-          const inputQuality = '' as QualityOptions;
+          const inputQuality = '';
           const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
           getExecOutputSpy.mockImplementation(() => {
@@ -293,7 +292,7 @@ describe('installer tests', () => {
         it(`should supply '-ProxyBypassList' argument to the installation script if env.variable 'no_proxy' is set`, async () => {
           process.env['no_proxy'] = 'first.url,second.url';
           const inputVersion = '10.0.101';
-          const inputQuality = '' as QualityOptions;
+          const inputQuality = '';
           const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
           getExecOutputSpy.mockImplementation(() => {
@@ -331,7 +330,7 @@ describe('installer tests', () => {
 
       it(`should supply 'architecture' argument to the installation script when architecture is provided`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const inputArchitecture = 'x64';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
@@ -365,7 +364,7 @@ describe('installer tests', () => {
 
       it(`should NOT supply 'architecture' argument when architecture is not provided`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
         getExecOutputSpy.mockImplementation(() => {
@@ -395,7 +394,7 @@ describe('installer tests', () => {
 
       it(`should supply 'install-dir' with arch subdirectory for cross-arch install`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const inputArchitecture = 'x64';
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;
 
@@ -436,7 +435,7 @@ describe('installer tests', () => {
 
       it(`should NOT supply 'install-dir' when architecture matches runner's native arch`, async () => {
         const inputVersion = '10.0.101';
-        const inputQuality = '' as QualityOptions;
+        const inputQuality = '';
         const nativeArch = os.arch().toLowerCase();
         const stdout = `Fictitious dotnet version ${inputVersion} is installed`;