Add option to fetch tags even if fetch-depth > 0 (#579)

* Add option to fetch tags even if fetch-depth > 0

* Add jest tests for fetchDepth and fetchTags options

4 files changed, 21 insertions, 5 deletions

diff --git a/src/git-command-manager.ts b/src/git-command-manager.ts
index e684dba..6ab807b 100644
--- a/src/git-command-manager.ts
+++ b/src/git-command-manager.ts
@@ -33,6 +33,7 @@ export interface IGitCommandManager {
     options: {
       filter?: string
       fetchDepth?: number
+      fetchTags?: boolean
     }
   ): Promise<void>
   getDefaultBranch(repositoryUrl: string): Promise<string>
@@ -240,10 +241,10 @@ class GitCommandManager {
 
   async fetch(
     refSpec: string[],
-    options: {filter?: string; fetchDepth?: number}
+    options: {filter?: string; fetchDepth?: number; fetchTags?: boolean}
   ): Promise<void> {
     const args = ['-c', 'protocol.version=2', 'fetch']
-    if (!refSpec.some(x => x === refHelper.tagsRefSpec)) {
+    if (!refSpec.some(x => x === refHelper.tagsRefSpec) && !options.fetchTags) {
       args.push('--no-tags')
     }
 
@@ -333,8 +334,8 @@ class GitCommandManager {
   }
 
   async log1(format?: string): Promise<string> {
-    var args = format ? ['log', '-1', format] : ['log', '-1']
-    var silent = format ? false : true
+    const args = format ? ['log', '-1', format] : ['log', '-1']
+    const silent = format ? false : true
     const output = await this.execGit(args, false, silent)
     return output.stdout
   }
diff --git a/src/git-source-provider.ts b/src/git-source-provider.ts
index 8f9d63f..042563e 100644
--- a/src/git-source-provider.ts
+++ b/src/git-source-provider.ts
@@ -153,7 +153,11 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
 
     // Fetch
     core.startGroup('Fetching the repository')
-    const fetchOptions: {filter?: string; fetchDepth?: number} = {}
+    const fetchOptions: {
+      filter?: string
+      fetchDepth?: number
+      fetchTags?: boolean
+    } = {}
     if (settings.sparseCheckout) fetchOptions.filter = 'blob:none'
     if (settings.fetchDepth <= 0) {
       // Fetch all branches and tags
@@ -171,6 +175,7 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
       }
     } else {
       fetchOptions.fetchDepth = settings.fetchDepth
+      fetchOptions.fetchTags = settings.fetchTags
       const refSpec = refHelper.getRefSpec(settings.ref, settings.commit)
       await git.fetch(refSpec, fetchOptions)
     }
diff --git a/src/git-source-settings.ts b/src/git-source-settings.ts
index 3272e63..9875d8d 100644
--- a/src/git-source-settings.ts
+++ b/src/git-source-settings.ts
@@ -45,6 +45,11 @@ export interface IGitSourceSettings {
   fetchDepth: number
 
   /**
+   * Fetch tags, even if fetchDepth > 0 (default: false)
+   */
+  fetchTags: boolean
+
+  /**
    * Indicates whether to fetch LFS objects
    */
   lfs: boolean
diff --git a/src/input-helper.ts b/src/input-helper.ts
index 410e480..631fbdb 100644
--- a/src/input-helper.ts
+++ b/src/input-helper.ts
@@ -100,6 +100,11 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   }
   core.debug(`fetch depth = ${result.fetchDepth}`)
 
+  // Fetch tags
+  result.fetchTags =
+    (core.getInput('fetch-tags') || 'false').toUpperCase() === 'TRUE'
+  core.debug(`fetch tags = ${result.fetchTags}`)
+
   // LFS
   result.lfs = (core.getInput('lfs') || 'false').toUpperCase() === 'TRUE'
   core.debug(`lfs = ${result.lfs}`)