Add v prefix expectation

Author: davegaeddert

CHANGELOG.md

@@ -13,5 +13,5 @@ Nothing yet.
 
 The first release! Includes the `sync` command which will sync your `CHANGELOG.md` to GitHub Release notes.
 
-[Unreleased]: https://github.com/dropseed/sitechecks/compare/0.1.0...HEAD
-[0.1.0]: https://github.com/dropseed/sitechecks/releases/tag/0.1.0
+[Unreleased]: https://github.com/dropseed/sitechecks/compare/v0.1.0...HEAD
+[0.1.0]: https://github.com/dropseed/sitechecks/releases/tag/v0.1.0

README.md

@@ -4,6 +4,8 @@ Sync your GitHub Release notes with your `CHANGELOG.md`.
 
 This tool expects that you follow the [Keep a Changelog](https://keepachangelog.com/) format.
 
+Note that, per [SemVer](https://semver.org/spec/v1.0.0.html#tagging-specification-semvertag), this tool also expects that your git tags are prefixed with a "v". As in, "v3.0.0" and not "3.0.0".
+
 ## Use the GitHub Action
 
 ```yml
@@ -21,4 +23,5 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: dropseed/changerelease
+
 ```

changerelease/release.py

@@ -15,7 +15,7 @@ def exists(self):
 
     def tag_exists(self):
         response = self.requests_session.get(
-            f"/repos/{self.repo}/git/refs/tags/{self.version}"
+            f"/repos/{self.repo}/git/refs/tags/v{self.version}"
         )
         if response.status_code == 404:
             return False
@@ -27,7 +27,7 @@ def body_matches(self, contents):
 
     def get(self):
         response = self.requests_session.get(
-            f"/repos/{self.repo}/releases/tags/{self.version}"
+            f"/repos/{self.repo}/releases/tags/v{self.version}"
         )
         if response.status_code == 404:
             return {}
@@ -38,7 +38,7 @@ def create(self, name, contents):
         response = self.requests_session.post(
             f"/repos/{self.repo}/releases",
             json={
-                "tag_name": name,
+                "tag_name": "v" + name,
                 "name": name,
                 "body": contents,
                 # TODO prerelease if semver prerelease