global enhancements

- create context object and remove github one
- more tests and improve mocks

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

src/git.ts

@@ -1,19 +1,21 @@
 import * as exec from '@actions/exec';
 
-export async function getRemoteSha(repo: string, ref: string): Promise<string> {
-  return await exec
-    .getExecOutput(`git`, ['ls-remote', repo, ref], {
-      ignoreReturnCode: true,
-      silent: true
-    })
-    .then(res => {
-      if (res.stderr.length > 0 && res.exitCode != 0) {
-        throw new Error(res.stderr);
-      }
-      const [rsha] = res.stdout.trim().split(/[\s\t]/);
-      if (rsha.length == 0) {
-        throw new Error(`Cannot find remote ref for ${repo}#${ref}`);
-      }
-      return rsha;
-    });
+export class Git {
+  public static async getRemoteSha(repo: string, ref: string): Promise<string> {
+    return await exec
+      .getExecOutput(`git`, ['ls-remote', repo, ref], {
+        ignoreReturnCode: true,
+        silent: true
+      })
+      .then(res => {
+        if (res.stderr.length > 0 && res.exitCode != 0) {
+          throw new Error(res.stderr);
+        }
+        const [rsha] = res.stdout.trim().split(/[\s\t]/);
+        if (rsha.length == 0) {
+          throw new Error(`Cannot find remote ref for ${repo}#${ref}`);
+        }
+        return rsha;
+      });
+  }
 }