Add dub: any input and make it the default

This value means install `dub` if the compiler is `gdc`, otherwise use
the `dub` that comes with `dmd` or `ldc2`. This is meant to solve the
common issue of having to specify the `dub` input to the action
because one of the tested compilers is `gdc`.

Signed-off-by: Andrei Horodniceanu <a.horodniceanu@proton.me>

Author: the-horo

.github/workflows/test.yml

@@ -105,6 +105,9 @@ jobs:
         with:
           dc: ${{ matrix.dc }}
           gdmd_sha: ${{ matrix.gdmd_sha }}
+      - name: Test that dub is installed by default
+        run: |
+          cd .github && dub run --single hello.d
 
   verify-default:
     needs: verify-index-js-up-to-date
@@ -142,7 +145,7 @@ jobs:
       matrix:
         os:  [ ubuntu-latest, windows-latest, macos-latest, macOS-13 ]
         dc:  [ ldc-latest, dmd-latest, gdc, gdc-12 ]
-        dub: [ 1.19.0, 1.23.0, latest ]
+        dub: [ 1.19.0, any, latest ]
         exclude:
           # Excluded because those are actually Linux executables
           - { os: windows-latest, dub: 1.19.0 }
@@ -163,6 +166,7 @@ jobs:
           dub: ${{ matrix.dub }}
 
       - name: Verify DUB version
+        if: matrix.dub != 'any'
         run: |
           if [[ ${{ matrix.dub }} == 'latest' ]]
           then

README.md

@@ -75,9 +75,6 @@ jobs:
         uses: dlang-community/setup-dlang@v2
         with:
           compiler: ${{ matrix.dc }}
-          # dub doesn't come with gdc.
-          # You wouldn't need the line below if only using dmd or ldc
-          dub: latest
 
       - name: Run tests
         shell: bash
@@ -103,8 +100,6 @@ Examples:
 - uses: dlang-community/setup-dlang@v2
   with:
     compiler: gdc-12
-    # dub doesn't come with gdc
-    dub: latest
     # Install gdmd from https://github.com/D-Programming-GDC/gdmd/blob/0a64b92ec5ad1177988496df4f3ca47c47580501/dmd-script
     # instead of the master branch
     gdmd_sha: '0a64b92ec5ad1177988496df4f3ca47c47580501'
@@ -162,12 +157,17 @@ The compilers are already configured to embed this path themselves so you really
 
 ### dub
 
-If you need a specific version of dub or if the D compiler doesn't come with one (`gdc`) you can explicitly install one.
+You can select the specific version of dub that gets installed, or if it gets installed.
 
-You can specify this version as:
+You can specify the version as:
 - `latest` - install the latest version from https://github.com/dlang/dub/releases.
   This may require an api token.
 - `1.24.0` - install https://github.com/dlang/dub/releases/tag/v1.24.0
+- `any` - use either the `dub` that comes with the compiler or install `latest`
+
+The default value is `any`.
+You can disable installing an additional `dub` by passing an empty string.
+Note that this does not affect the `dub` executable that comes packaged with `dmd` and `ldc2`.
 
 ### gh_token
 
@@ -210,7 +210,7 @@ Like dmd, ldc releases come with programs like `rdmd` and `dub`.
 
 Gdc is currently only available on linux.
 The exact versions available are those in the ubuntu repos.
-Note that gdc won't come by default with any extra programs like `rdmd` or `dub` so you would need to install them separately or install another compiler that comes with them.
+Note that gdc won't come by default with extra programs like `rdmd` so you would need to install them separately or install another compiler that comes with them.
 You can do that with:
 
 ```yml
@@ -229,7 +229,7 @@ You can do that with:
 
 ## DUB support
 
-[dub](https://github.com/dlang/dub) is installed alongside the selected compiler for any versions of dmd and ldc higher than v2.072.0 (2016-10-31).
+[dub](https://github.com/dlang/dub) is installed alongside the selected compiler for any versions of dmd and ldc higher than v2.072.0 (2016-10-31) and any version of gdc.
 
 If the `dub` parameter is provided to the action, that version will be the one installed instead.
 
@@ -269,3 +269,10 @@ Added unittests.
 To run them use `npm test`.
 
 Added the `verify_sig` option. It can be used to disable the gpg verification of the downloaded dmd archives. The option is meant to be used in edge-case scenarios when the [d-keyring](https://github.com/dlang/dlang.org/blob/master/d-keyring.gpg) is not updated alongside the dmd releases (#87). Requested in #90.
+
+Added the `dub: "any"` input
+This is a special value that means:
+1. if the compiler is `dmd` or `ldc`, don't install `dub`, use the executable that comes with the compiler
+2. if the compiler is `gdc`, install latest `dub`
+
+This has become the default value because most D projects use `dub` to build and it is a hindrance to manually specify it just because `gdc` doesn't come with it.

__tests__/action_input.test.ts

@@ -132,7 +132,7 @@ describe('Action messages', () => {
 	for (var comp of [ 'dmd', 'ldc-11.3.0', 'gdc-12' ]) {
 	    mockInputs(comp)
 	    await main.run()
-	    expect(nopTool.makeAvailable).toHaveBeenCalledTimes(1)
+	    expect(nopTool.makeAvailable).toHaveBeenCalled()
 	    expect(consoleSpy).toHaveBeenCalledTimes(2)
 	    nopTool.makeAvailable.mockClear()
 	    consoleSpy.mockClear()
@@ -150,3 +150,36 @@ describe('Action messages', () => {
 	expect(consoleSpy.mock.calls[0][0]).toMatch(msg)
     })
 })
+
+describe('dub default input', () => {
+    function mockCompiler(compiler: string) {
+        jest.spyOn(core, 'getInput').mockImplementation((key) => {
+            switch (key) {
+                case 'compiler':
+                    return compiler
+                case 'dub':
+                    return 'any'
+                default:
+                    return ''
+            }
+        })
+    }
+
+    test('with gdc dub is latest', () => {
+        mockCompiler('gdc-14')
+        const got = main.getActionInputs()
+        expect(got.dub_version).toBe('latest')
+    })
+
+    test('with dmd dub is empty', async () => {
+        mockCompiler('dmd')
+        const got = main.getActionInputs()
+        expect(got.dub_version).toBe('')
+    })
+
+    test('without a compiler specified dub is empty', async () => {
+        mockCompiler('')
+        const got = main.getActionInputs()
+        expect(got.dub_version).toBe('')
+    })
+})

action.yml

@@ -6,7 +6,8 @@ inputs:
     description: "Compiler version string, for example 'dmd-latest' or 'ldc-1.20.1'"
     required: false
   dub:
-    description: "DUB version string, for example 'latest' or '1.29.0'"
+    description: "DUB version string, for example 'any', 'latest', or, '1.29.0'"
+    default: any
     required: false
   gh_token:
     description: "Token to use when doing Github API request (for ldc-master)"

dist/index.js

@@ -13,7 +13,14 @@ export function getActionInputs() {
     }
     const d_compiler = core.getInput('compiler') || default_compiler;
     const gh_token = core.getInput('gh_token') || "";
-    const dub_version = core.getInput('dub') || "";
+    let dub_version = core.getInput('dub')
+    if (dub_version == 'any') {
+        if (d_compiler.startsWith('gdc'))
+            dub_version = 'latest'
+        else
+            dub_version = ''
+    }
+
     const gdmd_sha = core.getInput('gdmd_sha') || ""
 
     return { d_compiler, gh_token, dub_version, gdmd_sha };