feat: update default value of git_ref

By default use `github.ref` and use `master` as a fallback.

.github/workflows/base-test.yml

@@ -22,7 +22,6 @@ jobs:
         uses: ./
         with:
           api_key: ${{ secrets.TF_PUBLIC_API_KEY }}
-          git_ref: "main"
           tmt_plan_regex: "smoke_plan"
           pull_request_status_name: "Smoke test"
           update_pull_request_status: "true"

.github/workflows/secrets_test.yml

@@ -22,7 +22,6 @@ jobs:
         uses: ./
         with:
           api_key: ${{ secrets.TF_PUBLIC_API_KEY }}
-          git_ref: "main"
           tmt_plan_regex: "secrets_plan"
           pull_request_status_name: "Secrets test"
           secrets: "SOME_DUMMY_SECRET=FOO_BAR_SECRET;OS_SECRET=DUMMY_SECRET_OS"

.github/workflows/timeout-test.yml

@@ -23,7 +23,6 @@ jobs:
         id: tf_results
         with:
           api_key: ${{ secrets.TF_PUBLIC_API_KEY }}
-          git_ref: "main"
           tmt_plan_regex: "timeout_plan"
           pull_request_status_name: "Timeout test"
           update_pull_request_status: "true"

.github/workflows/variables_test.yml

@@ -22,7 +22,6 @@ jobs:
         uses: ./
         with:
           api_key: ${{ secrets.TF_PUBLIC_API_KEY }}
-          git_ref: "main"
           tmt_plan_regex: "variables_plan"
           pull_request_status_name: "Variables test"
           variables: "SOME_DUMMY_VARIABLE=FOO_BAR_VARIABLE;OS_VARIABLE=DUMMY_OS"

README.md

@@ -36,7 +36,7 @@ See [Testing Farm onboarding guide](https://docs.testing-farm.io/Testing%20Farm/
 | Input Name | Description | Default value |
 |------------|-------------|---------------|
 | `git_url` | An url to the repository with tmt metadata | url of repo that runs GHA |
-| `git_ref` | A tmt tests branch which will be used for tests | master |
+| `git_ref` | A tmt tests branch, tag or commit specifying the desired git revision which will be used for tests | `github.ref` when available, otherwise `master` |
 | `tmt_plan_regex` | A regular expression used to select tmt plans | all |
 | `tmt_context` | A mapping of tmt context variable [tmt-context](https://tmt.readthedocs.io/en/latest/spec/context.html), variables separated by ; | empty |
 | `tmt_path` |  A path in the repository with tmt metadata | "." |

action.yml

@@ -18,9 +18,9 @@ inputs:
     required: false
     default: '${{ github.server_url }}/${{ github.repository }}'
   git_ref:
-    description: 'A TMT tests branch which will be used for tests'
+    description: 'A tmt tests branch, tag or commit specifying the desired git revision which will be used for tests.'
     required: false
-    default: 'master'
+    default: '${{ github.ref }}'
   github_token:
     description: 'GitHub TOKEN or PAT'
     required: false

src/action.ts

@@ -112,13 +112,16 @@ async function action(pr: PullRequest): Promise<void> {
     JSON.parse(getInput('pipeline_settings'))
   );
 
+  const ref = getInput('git_ref') || 'master';
+  debug(`Using git_ref: '${ref}'`);
+
   // Schedule a test on Testing Farm
   const request = {
     api_key: getInput('api_key', { required: true }),
     test: {
       fmf: {
         url: getInput('git_url', { required: true }),
-        ref: getInput('git_ref'),
+        ref,
         path: tmtPath,
         ...tmtPlanRegex,
       },