Misc Changes

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

@@ -0,0 +1,21 @@
+package solutions.tretter.githugandroid
+
+/**
+ * Port of the upstream ruby-githug `commit_amend` 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 commitAmendLevel(): Level = level(
+    id = "commit_amend",
+    title = "Commit Amend",
+    description = "The `README` file has been committed, but it looks like the file `forgotten_file.rb` was missing from the commit. Add the file and amend your previous commit to include it.",
+    hints = listOf("Running `git commit --help` will display the man page and possible flags."),
+    commandSuggestions = listOf("git add forgotten_file.rb", "git commit --amend --no-edit"),
+    setup = { RepoState(initialized = true, files = listOf(GitFile("README", tracked = true), GitFile("forgotten_file.rb")), commits = listOf(CommitNode("0000001", "Initial commit")), branches = mapOf("master" to 1)) },
+    validator = repoPredicate { repo -> repo.commits.size == 1 && repo.files.any { it.name == "forgotten_file.rb" && it.tracked && !it.staged } },
+    testCases = listOf(
+        levelTestCase("amend after add", "git add forgotten_file.rb", "git commit --amend --no-edit"),
+    ),
+)