Misc Changes

app/src/main/java/solutions/tretter/githugandroid/levels/RebaseOntoLevel.kt

@@ -0,0 +1,22 @@
+package solutions.tretter.githugandroid
+
+/**
+ * Port of the upstream ruby-githug `rebase_onto` level.
+ *
+ * Setup documents the repository shape the learner explores. Evaluation is kept
+ * state-based whenever the exercise changes repository objects; answer-only
+ * levels intentionally validate the answer entered at the prompt.
+ */
+internal fun rebaseOntoLevel(): Level = level(
+    id = "rebase_onto",
+    title = "Rebase Onto",
+    description = "You have created your branch from `wrong_branch` and already made some commits, and you realise that you needed to create your branch from `master`. Rebase your commits onto `master` branch so that you don't have `wrong_branch` commits.",
+    hints = listOf("You want to research the `git rebase` commands `--onto` argument"),
+    commandSuggestions = listOf("git rebase --onto master wrong_branch readme-update"),
+    setup = { RepoState(initialized = true, headBranch = "readme-update", branches = mapOf("master" to 1, "wrong_branch" to 2, "readme-update" to 4)) },
+    validator = repoPredicate { repo -> (repo.branches["readme-update"] ?: 0) == (repo.branches["master"] ?: 0) + 1 },
+    testCases = listOf(
+        levelTestCase("rebase onto explicit branch", "git rebase --onto master wrong_branch readme-update"),
+        levelTestCase("rebase onto current branch", "git rebase --onto master wrong_branch"),
+    ),
+)