AMT coverage: g5-interpretercallermeta-v1

[thedavidmeister]

AMT coverage for group g5-interpretercallermeta-v1 (30 behaviours across 5 units), probed with
nix run github:rainlanguage/adversarial-mutation-test#mutation-probe over the suite
nix develop -c cargo test -p rain-metadata — the rainix-rs CI suite scoped to the one workspace
member containing every mutated file (the other two members are its dependencies, not dependents,
so their tests cannot observe these mutations).

Sequence per the AMT protocol: all 78 mutants probed against the PRE-EXISTING suite first
(30 killed, each credited to named pre-existing tests; 48 survived; 0 no-run; 0 harness errors),
then survivors worked per unit with new or in-place-strengthened discriminating tests and
re-probed to 78/78 KILLED. One deliberately unprobed sub-behaviour is recorded at the bottom.

Behaviour matrix

Verdict legend: PRE = killed by pre-existing test (validates existing coverage), NEW = killed by a
test added here, STR = killed by a pre-existing test strengthened in place.

#	Behaviour	Mutation(s)	Verdict	Killing test(s)
1	ICMeta serde defaults desc/source/alias/signed_context/caller_context/cells	U1-M01/02/04/05/06 (alias attr mutant is serde-equivalent: Option is implicitly None when missing; the default is still pinned by the same test)	NEW	interpreter_caller::v1::tests::test_serde_defaults
2	ICMeta nested #[validate] chain Method/MethodInput/Expression/ContextColumn/ContextCell + length caps	U1-M07/08/09/10/11 (chain), U1-M12/13/14 (min-1 / max-u8::MAX)	NEW	test_nested_validate_chain, test_length_constraints
3	ICMeta TryFrom Vec/&[u8] parse+validate; TryFrom meta item via unpack; deny_unknown_fields; camelCase wire	U1-M15/16 (skip validate), U1-M17 (bypass unpack), U1-M18 (deny), U1-M19 (rename)	NEW	test_try_from_bytes_validates, test_try_from_meta_item_unpacks_encoding, test_deny_unknown_fields, test_camel_case_wire_format
4	Build: TryFrom<&BuildItem> magic→KnownMeta→normalize→encode→schema None	U2-M01 (skip normalize), U2-M02 (skip encode)	NEW	cli::build::tests::test_item_normalize_then_encode
		U2-M03 (schema Some), U2-M04 (magic hardcoded)	PRE	test_into_meta_document, test_empty_item, test_cbor_encoding_type
5	build_bytes: per-item conversion then cbor_encode_seq under global magic	U2-M05 (global magic hardcoded), U2-M06 (items dropped)	PRE	test_build_empty, test_empty_item, test_cbor_encoding_type
6	build(): 4 arity guards with distinct messages	U2-M07/08/09/10 (each guard disabled)	NEW	cli::build::tests::test_build_arity_guards
7	build(): izip file reads into items; output dispatch	U2-M11 (file contents dropped), U2-M12 (output encoding ignored)	NEW	cli::build::tests::test_build_reads_files_and_encodes_output
8	schema_check: exactly-one-of guard; failure aggregation; live-mode SDL append	U3-M01/02/03	PRE	schema_check_rejects_neither_source_nor_live_url, schema_check_failure_includes_live_sdl_in_error
	schema_check: success count message	U3-M04 (count zeroed in println)	NEW	tests/cli.rs::schema_check_prints_verified_entity_count
9	fetch_live_entities_as_sdl: graphql errors propagated; missing types pointer; OBJECT+entity filter; per-field SDL	U3-M06/07/08/09	PRE	fetch_live_entities_propagates_graphql_errors, fetch_live_entities_filters_to_entity_object_types, schema_check_failure_includes_live_sdl_in_error
	fetch_live_entities_as_sdl: native-only 10s/30s timeout values	—	UNPROBED	discriminating a changed/removed timeout requires a ≥30s hanging-server test; deliberately left unprobed and recorded here
10	is_entity_object filters	U3-M10/11	PRE	is_entity_object_skips_derivative_and_internal_types, fetch_live_entities_filters_to_entity_object_types
11	render_type NON_NULL/LIST/Unknown fallback, recursive	U3-M12/13	PRE	render_type_unwraps_introspection_typeref_recursively, render_type_falls_back_to_unknown_for_missing_name
12	check(): parse errors; empty-source error; error accumulation; count	U3-M14/15/16/17	PRE	unparseable_source_is_reported, source_with_no_entities_is_an_error, deployed_subgraph_drift_is_caught, matching_schemas_pass et al
13	entities(): @entity directive filter	U3-M18	PRE	entities_returns_only_entity_directive_objects et al
14	build_field_index(): all Object types indexed	U3-M19	PRE	build_field_index_returns_field_maps_keyed_by_object_name
15	type_equal recursive equality, cross-kind false	U3-M20/21	PRE	type_equal_named_named, type_equal_distinguishes_wrappers et al
16	type_to_string SDL rendering	U3-M22	PRE	type_to_string_renders_sdl_syntax et al
17	read_input_content: wrapped file error; stdin branch	U4-M01 (unwrapped error)	STR	test_read_input_content_nonexistent_file (now asserts the wrapped message)
		U4-M11 (stdin returns empty)	NEW	tests/cli.rs::generate_source_reads_stdin_and_writes_stdout
18	write_output: pretty JSON; create_dir_all; file vs stdout	U4-M02 (compact)	STR	test_write_output_to_file (now exact pretty snapshot)
		U4-M03 (skip create_dir_all)	NEW	test_write_output_creates_parent_dirs; stdout branch via generate_source_reads_stdin_and_writes_stdout
19	generate dispatch → generate_source pipeline	U4-M04 (output path dropped)	PRE	test_full_generate_flow
20	generate_emit_data_calldata: emitMetaCall{subject,meta}	U4-M05 (subject zeroed), U4-M12 (meta emptied)	PRE	test_generate_emit_meta_calldata_success et al
21	generate_emit_meta_calldata: cbor_encode + hash(false) subject	U4-M06 (hash(true))	PRE	test_generate_emit_meta_calldata_success, test_subject_matches_document_hash
22	validate_dotrain_content: trim().is_empty()	U4-M07	PRE	test_validate_dotrain_content, test_generate_dotrain_source_emit_tx_data_empty_content
23	tx-data: subject = hash(false) of bare item; meta_bytes = prefixed seq; 0x prefixes	U4-M08 (hash(true)), U4-M09 (wrong seq magic)	STR	test_generate_dotrain_source_emit_tx_data_success (now pins the bare-item keccak against an independently built item, and the 0xff0a89c674ee7874 prefix)
		U4-M10 (0x prefix dropped)	PRE	test_full_generate_flow, test_generate_dotrain_source_emit_tx_data_success
24	output(): Binary vs Hex; file vs stdout	U5-M01 (unprefixed hex), U5-M02 (binary emptied)	NEW	cli::output::tests::*
		U5-M03 (stdout emptied)	NEW	tests/cli.rs::schema_show_prints_op_meta_schema_to_stdout
25	validate(): validity = normalizability	U5-M04	NEW	cli::validate::tests::test_validate_err_for_invalid_meta
26	schema show: 4 schema arms + unsupported + pretty	U5-M05/06/07	NEW	cli::schema::show::tests::*
27	magic ls / schema ls print all variants	U5-M08/09	NEW	tests/cli.rs::magic_ls_prints_all_known_magic_numbers, schema_ls_prints_all_known_metas
28	extract_artifact_component_json: 3 arms, no null check	U5-M10/11	NEW	solc::tests::test_extract_each_component (+ documented null passthrough pinned by test_missing_component_returns_null)
29	KnownSubgraphs constants	U5-M12/13	NEW	subgraph::tests::test_network_triples_are_exact, test_flavor_slices_and_all
30	of_chain: 1/137/80001 + UnsupportedNetwork	U5-M14/15	NEW	subgraph::tests::test_of_chain_known_networks, test_of_chain_unknown_network_errors

QA

• Discriminating tests: interpreter_caller::v1::tests::* (7), cli::build::tests::test_item_normalize_then_encode/test_build_arity_guards/test_build_reads_files_and_encodes_output, cli::generate::tests::test_write_output_creates_parent_dirs (+2 strengthened in place), metaboard::tests::test_generate_dotrain_source_emit_tx_data_success (strengthened), cli::output::tests::*, cli::validate::tests::*, cli::schema::show::tests::*, solc::tests::*, subgraph::tests::*, tests/cli.rs::* (5 e2e) - each fails on base, verified by mutation-probe runs below: every one of the 49 pass-1 survivors flips to KILLED only after its test landed, with the killer named by the probe fail-pattern
• Mutations applied: 78 exact-string mutants across the 5 units (per-mutant line -> mutation -> killing test in the behaviour matrix above and the probe logs; e.g. v1.rs #[serde(default)] removed -> test_serde_defaults; build.rs guard if false && -> test_build_arity_guards; metaboard.rs hash(false)->hash(true) -> test_generate_dotrain_source_emit_tx_data_success)
• Oracle: doc comments and NatSpec of the mutated units (InterpreterCallerMeta field docs, IMetaV1_2 subject semantics), the rain metadata-v1 spec magic-number table (magic ls expectations and the 0xff0a89c674ee7874 prefix), exact CLI error-message strings, and independently constructed values (subject pinned to keccak256 of an item built in the test, not to the implementation output)
• Category check: AMT group g5-interpretercallermeta-v1 lists 30 behaviours across 5 units; all 30 probed and covered, 1 sub-behaviour (live-introspection timeout values) recorded UNPROBED with reason in the matrix; adversarial candidates filed as Dotrain source subject is derived two ways: generate emits under keccak(cbor item map) while DotrainSourceV1::hash and the subject field docs say keccak(content) #219-KnownSubgraphs polygon NPE2 endpoint name is 'npe2-mati' — possible typo vs deliberate 30-char hosted-service truncation, unverifiable since the hosted service sunset #223

Probe tool: nix run github:rainlanguage/adversarial-mutation-test#mutation-probe with
suite nix develop -c cargo test -p rain-metadata, proof (\d+) passed; (\d+) failed
(summed across test binaries), fail-pattern naming killer tests. Mutant files kept out
of the tree (never committed).

• Pass 1 (pre-existing suite only, commit bba50a7): baseline green (131 passed);
  76 mutants: 29 KILLED / 47 SURVIVED / 0 NO-RUN / 0 HARNESS-ERROR; supplementary pass
  on 2 late-added mutants: 1 KILLED (U4-M12) / 1 SURVIVED (U4-M11). Every kill named
  pre-existing tests (see matrix rows marked PRE).
• Re-probe after unit-1 tests: --only U1- → 18/18 KILLED.
• Re-probe after remaining tests: --only over all 29 remaining main-file survivors →
  29/29 KILLED (baseline green at 155 lib + 5 e2e + 2 doc tests).
• Final probe of the supplementary file → 2/2 KILLED.
• Definitive single-pass re-run of the full 76-mutant file on the final commit (babfb8d): 76/76 KILLED, exit 0 (baseline 162 passed), files verified restored byte-exact.
• Net: 78/78 probed mutants KILLED; 1 sub-behaviour (live-introspection client timeout
  values) deliberately UNPROBED and recorded in the matrix.

Adversarial findings were filed as issues labelled audit + adversarial:
#219 (dotrain subject derivation inconsistency), #220 (expressions min-1 intent unenforced), #221 (context_columns u8 cap off-by-one question), #222 (introspection nesting depth), #223 (npe2-mati endpoint name).

🤖 Generated with Claude Code

Summary by CodeRabbit

• Tests
  • Expanded coverage for CLI build, generate, output, schema, and validation workflows.
  • Added end-to-end checks for stdin/stdout behavior, JSON formatting, hexadecimal output, file handling, and directory creation.
  • Added validation coverage for metadata parsing, compression, schema selection, network mappings, and unsupported inputs.
  • Added checks for generated metadata prefixes, subject hashes, Solidity artifacts, and known command listings.

[coderabbitai]

Walkthrough

The PR adds unit and end-to-end tests for CLI commands, metadata encoding and validation, schema output, Solidity artifact extraction, subgraph mappings, and generated metadata integrity.

Changes

CLI and metadata coverage

Layer / File(s)	Summary
Build and output paths crates/cli/src/cli/build.rs, crates/cli/src/cli/output.rs, crates/cli/src/cli/generate.rs	Tests cover normalization, encoding, build arity errors, file reads, binary and hexadecimal output, exact errors, and nested output directories.
Schema and validation commands crates/cli/src/cli/schema/show.rs, crates/cli/src/cli/validate.rs	Tests cover compact and pretty schema output, supported metadata variants, unsupported metadata errors, and valid or invalid metadata validation.
Metadata type validation and artifact extraction crates/cli/src/meta/types/interpreter_caller/v1.rs, crates/cli/src/solc/mod.rs	Tests cover defaults, nested validation, collection limits, byte conversions, compressed decoding, wire-format rules, artifact components, missing fields, and malformed input.
Generated metadata integrity crates/cli/src/metaboard.rs	Tests verify the metadata magic prefix and the subject hash derived from the CBOR item.
CLI integration and subgraph registries crates/cli/tests/cli.rs, crates/cli/src/subgraph/mod.rs	End-to-end tests cover command output, schema checks, stdin processing, known subgraph URLs, supported networks, and unsupported chain IDs.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: 🟡 Moderate · up to babfb

The PR adds metadata and CLI behavior with extensive tests, but two changed Rust files still lack required DCL-1.0 SPDX headers and the required repository quality gates have not been shown to pass. Merge readiness is moderate until the headers are added and those checks complete successfully.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the main objective: adding AMT coverage for g5-interpretercallermeta-v1.
Docstring Coverage	✅ Passed	Docstring coverage is 82.61% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 46 functions across 10 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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Inline comments:
In `@crates/cli/src/subgraph/mod.rs`:
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📥 Commits

Reviewing files that changed from the base of the PR and between bba50a7 and babfb8d.

📒 Files selected for processing (10)

• crates/cli/src/cli/build.rs
• crates/cli/src/cli/generate.rs
• crates/cli/src/cli/output.rs
• crates/cli/src/cli/schema/show.rs
• crates/cli/src/cli/validate.rs
• crates/cli/src/meta/types/interpreter_caller/v1.rs
• crates/cli/src/metaboard.rs
• crates/cli/src/solc/mod.rs
• crates/cli/src/subgraph/mod.rs
• crates/cli/tests/cli.rs

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