Sandi S2 (smoke coverage was 4/12) + Tobi T7 (adapter exception path
untested) consensus actions. 38 new tests across 9 files take total
from 15 -> 53 tests, 50 -> 134 assertions.
Per-class breakdown:
session_test.rb (2 tests)
Contract on initialize parameters (positional record + keyword
callables) and public surface (ensure!/recreate!/abort!/just_created?).
AR fixtures stay in the host suite.
turn_test.rb (4 tests)
Required + optional keyword arg contracts (locks the 9 required
+ 8 optional keys against drift). Public surface = [:call] only.
Result struct exercised as a value object with status predicates
and cost/token delegation.
message_artifacts_test.rb (2 tests)
Contract on initialize parameters; public surface = [:attach_from].
impostor_test.rb (3 tests)
Initialize keyword contract; delegation to ActiveStorage attachment
via a Struct double on #filename.
sandbox_test.rb (5 tests)
Real tmpdir instantiation: #path / #exists? / #files (Enumerator
when block-less, yields SandboxFile values when files present) /
#file lookup-by-basename returns nil for missing.
sandbox_file_test.rb (4 tests)
Real tmpdir + file: basic readers, marcel-backed content_type
detection, #safe? size-cap rejection, #as_artifact identity
conversion returns Opencode::Artifact.
transform_test.rb (8 tests)
Documents the abstract contract (source_filename / destination_filename /
render all raise NotImplementedError). A trivial concrete subclass
inside the test exercises the default implementations of
#applies_to?, #trusted?, #owned_filenames, and #purge_impostors?
that delegate to the two abstract filename methods.
tool_display_test.rb (5 tests)
Known tool canonicalization, status predicates (running/completed/
errored/in_flight/terminal), unknown-tool fallback, nil-part
tolerance (callers sometimes pass non-tool parts_json entries).
uploaded_files_prompt_test.rb (3 tests)
Initialize keyword contract; #text returns raw content + empty
sandbox_file_names map when no files attached; public surface check.
Plus 2 new tests in error_reporter_test.rb (C4):
- test_adapter_exceptions_propagate: adapter that raises must
propagate, not silently swallow — operators need to know the
error tracker is broken.
- test_report_returns_adapter_return_value: report passes through
the adapter's return value verbatim (Rails.error.report returns
the error itself; callers can chain).
Faithful to actual implementations: every test was first written from
the API I expected, then corrected against the class internals when
errors surfaced. The corrections themselves document the contract:
SandboxFile expects a String sandbox_prefix with trailing separator
(not a Pathname), Transform's filename methods are abstract not
nil-defaulting, etc.
