tests(f2/repl): migrate stacktrace tests

Change-Id: Ic6795f22d68aea113fa2037cbd0a731ac5e698f8

tests/functional2/repl_characterization/stacktrace/invalid_arg.md

@@ -0,0 +1,127 @@
+---
+args: ['--debugger']
+---
+
+```nix
+throw "(forever????????)"
+```
+```output
+error: (forever????????)
+
+```
+
+
+argument-less :st works fine
+
+```nix
+:st
+```
+```output
+
+0: error: (forever????????)
+«string»:1:1
+
+     1| throw "(forever????????)"
+      | ^
+
+Env level 0
+static: 
+
+Env level 1
+abort baseNameOf break builtins derivation derivationStrict dirOf false fetchGit fetchMercurial fetchTarball fetchTree fromTOML import isNull map null placeholder removeAttrs scopedImport throw toString true 
+
+```
+
+
+a non-numeric string produces an error
+
+```nix
+:st chat
+:st bedroom community
+```
+```output
+error: argument 'chat' is not a valid integer
+
+error: argument 'bedroom community' is not a valid integer
+
+```
+
+
+even when they start with a digit
+```nix
+:st 6up
+```
+```output
+error: argument '6up' is not a valid integer
+
+```
+
+
+or when they're floats
+```nix
+:st 4.50
+```
+```output
+error: argument '4.50' is not a valid integer
+
+```
+
+
+
+an integer outside of the  range produces an error
+```nix
+:st 23571113171923
+```
+```output
+error: argument '23571113171923' is not a valid integer
+
+```
+
+
+argument-less `:st` is still at the same index after errors
+```nix
+:st 1
+:st foo
+:st
+```
+```output
+
+1: while calling a function
+«string»:1:1
+
+     1| throw "(forever????????)"
+      | ^
+
+Env level 0
+static: 
+
+Env level 1
+abort baseNameOf break builtins derivation derivationStrict dirOf false fetchGit fetchMercurial fetchTarball fetchTree fromTOML import isNull map null placeholder removeAttrs scopedImport throw toString true 
+
+
+error: argument 'foo' is not a valid integer
+
+
+1: while calling a function
+«string»:1:1
+
+     1| throw "(forever????????)"
+      | ^
+
+Env level 0
+static: 
+
+Env level 1
+abort baseNameOf break builtins derivation derivationStrict dirOf false fetchGit fetchMercurial fetchTarball fetchTree fromTOML import isNull map null placeholder removeAttrs scopedImport throw toString true 
+
+```
+
+
+quit
+```nix
+:quit
+```
+```output
+error: (forever????????)
+
+```