fix: dont warn when no remote tags exist

.gitignore

@@ -39,5 +39,6 @@ luac.out
 *.x86_64
 *.hex
 
+.pre-commit-config.yaml
 .luarc.json
 result*

lua/rocks-git/git.lua

@@ -261,12 +261,17 @@ function git.get_latest_remote_semver_tag(url)
     get_latest_remote_version_tag(url, function(sc)
         ---@cast sc vim.SystemCompleted
         if sc.code == 0 then
-            local latest_tag, latest_version = parser.parse_git_latest_semver_tag(sc.stdout or "")
-            if latest_tag and latest_version then
-                future.set({ latest_tag, latest_version })
-            else
-                log.warn("Could not parse latest tag from: " .. sc.stdout)
+            if sc.stdout == "" then
+                log.debug("No tag found for " .. url)
                 future.set({})
+            else
+                local latest_tag, latest_version = parser.parse_git_latest_semver_tag(sc.stdout)
+                if latest_tag and latest_version then
+                    future.set({ latest_tag, latest_version })
+                else
+                    log.warn("Could not parse latest tag from: " .. sc.stdout)
+                    future.set({})
+                end
             end
         else
             log.warn(sc.stderr)

spec/git_spec.lua

@@ -1,4 +1,5 @@
 local git = require("rocks-git.git")
+local a = require("nio").tests
 
 local origin_pkg_dir = vim.fn.tempname()
 local origin_pkg_remote_dir = vim.fs.joinpath(origin_pkg_dir, ".git", "refs", "remotes", "origin")
@@ -34,4 +35,12 @@ describe("git", function()
         })
         assert.Same("bar", head_branch)
     end)
+
+    a.it("Handles a remote without semver tags", function()
+        local url = "https://github.com/lumen-oss/luarocks-stub.git"
+        local version_tuple = git.get_latest_remote_semver_tag(url).wait()
+        vim.print(version_tuple)
+        -- {} if no tag, else latest_tag, latest_version
+        assert.Same({}, version_tuple)
+    end)
 end)