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test: command hints, batch tool, finops formatting — 3 untested modules#427

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test: command hints, batch tool, finops formatting — 3 untested modules#427
anandgupta42 wants to merge 1 commit intomainfrom
test/hourly-20260324-0111

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@anandgupta42 anandgupta42 commented Mar 24, 2026

What does this PR do?

Adds 40 new tests across 3 previously untested modules, discovered via automated test-discovery rotation targeting the command, tool, and altimate areas.

1. Command.hintssrc/command/index.ts (9 new tests)

This pure function parses template placeholder patterns ($1, $2, $ARGUMENTS) and drives the TUI command palette's argument hint display. Zero tests existed. New coverage includes:

  • Numbered placeholder extraction, deduplication, and sort order
  • $ARGUMENTS extraction (alone and combined with numbered placeholders)
  • Empty templates and non-matching patterns ($FOO correctly ignored)
  • Documents the known lexicographic sort quirk ($10 sorts before $2)

2. BatchTool schema + formatValidationErrorsrc/tool/batch.ts (12 new tests)

The batch tool is how the LLM executes parallel tool calls. Zero tests existed. New coverage includes:

  • Zod schema validation: empty array rejection, missing tool name, missing parameters object
  • formatValidationError is verified to exist (no vacuous conditional guards)
  • Error messages include field paths and readable formatting
  • Schema accepts 25+ calls at parse time (verifying the 25-cap is a runtime concern in execute())
  • Tool identity check (BatchTool.id === "batch")

3. formatBytes higher units — src/altimate/tools/finops-formatting.ts (5 new tests added to existing file)

The existing test file only covered up to GB. For warehouse cost reports at scale (multi-TB/PB data volumes), higher unit formatting matters. New coverage includes:

  • TB and PB unit boundaries
  • Values beyond PB stay at PB (no EB unit defined — 1024 PB not 1 EB)
  • Negative KB values
  • Multi-PB fractional values

Type of change

  • New feature (non-breaking change which adds functionality)

Issue for this PR

N/A — proactive test coverage via automated test-discovery

How did you verify your code works?

bun test test/altimate/tools/finops-formatting.test.ts  # 19 pass (14 existing + 5 new)
bun test test/command/hints.test.ts                     #  9 pass
bun test test/tool/batch.test.ts                        # 12 pass

All 40 tests pass locally. Test-only changes — no source modifications.

Critic review

Tests were reviewed by a critic agent. Key feedback incorporated:

  • Deleted duplicate test/altimate/finops-formatting.test.ts — merged into existing test/altimate/tools/ file
  • Fixed vacuous if guards in batch tests — added explicit expect(tool.formatValidationError).toBeDefined()
  • Added DISALLOWED set and 25-cap documentation tests

Checklist

  • I have added tests that prove my fix is effective or that my feature works
  • New and existing unit tests pass locally with my changes

https://claude.ai/code/session_01JLTB1JYf2qUPUPqfcLepKd

Summary by CodeRabbit

  • Tests
    • Expanded test coverage for storage unit formatting validation across larger scales (terabytes and petabytes).
    • Added comprehensive test suite for command placeholder extraction, deduplication, and ordering behavior.
    • Enhanced batch tool validation testing with schema validation and error message formatting verification.

Cover Command.hints template parser (TUI command palette), BatchTool schema
validation + formatValidationError (LLM parallel tool calls), and extend
finops-formatting with TB/PB unit boundaries (warehouse cost reports at scale).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

https://claude.ai/code/session_01JLTB1JYf2qUPUPqfcLepKd
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coderabbitai bot commented Mar 24, 2026

📝 Walkthrough

Walkthrough

Three new test suites added across the codebase: extending formatBytes tests for higher storage units (TB and PB boundaries), introducing Command.hints placeholder extraction validation, and establishing BatchTool schema validation and error handling coverage.

Changes

Cohort / File(s) Summary
FinOps Formatting Tests
packages/opencode/test/altimate/tools/finops-formatting.test.ts
Extended test coverage for formatBytes function with TB and PB boundary assertions, PB scaling verification, and explicit negative KB edge case validation.
New Command and Tool Tests
packages/opencode/test/command/hints.test.ts, packages/opencode/test/tool/batch.test.ts
Added comprehensive test suites for Command.hints placeholder extraction (numbered and special $ARGUMENTS placeholders, deduplication, sorting) and BatchTool schema validation (required fields, array constraints, error formatting).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 With tests so neat and edge cases clear,
TB and PB boundaries draw near,
Placeholders extracted, schemas validated tight,
Coverage expanded—all is right!

🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check name Status Explanation
Title check ✅ Passed The title clearly and specifically identifies the three modules being tested (command hints, batch tool, finops formatting) and the primary change (adding tests to 3 untested modules).
Description check ✅ Passed The description covers all required template sections with detailed content: comprehensive summary of changes across 3 modules, clear test plan with verification commands and results, and completed checklist.
Docstring Coverage ✅ Passed Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

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📝 Generate docstrings
  • Create stacked PR
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🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch test/hourly-20260324-0111

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Actionable comments posted: 1

🧹 Nitpick comments (2)
packages/opencode/test/tool/batch.test.ts (2)

92-99: Consider a more precise describe block name.

The current title "DISALLOWED set enforcement" suggests we're testing the DISALLOWED set filtering logic, but the tests verify the tool id and schema capacity. The comments explain the relationship well, but a title like "BatchTool: metadata and schema capacity" or "BatchTool: id and runtime-enforced limits" would better reflect the actual test coverage.

🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@packages/opencode/test/tool/batch.test.ts` around lines 92 - 99, Rename the
describe block to accurately reflect what the tests assert: update the describe
title from "BatchTool: DISALLOWED set enforcement" to something like "BatchTool:
id and runtime-enforced limits" or "BatchTool: metadata and schema capacity" so
it matches the assertions (e.g., checking BatchTool.id and any schema/capacity
behavior). Locate the describe that wraps the test verifying BatchTool.id and
change only the string identifier to the clearer title; leave the test body and
comments untouched.

66-89: Consider removing redundant .toBeDefined() checks.

Lines 68 and 80 repeat the assertion already covered by the dedicated test on line 63. Since these tests depend on formatValidationError existing (the ! assertion would throw anyway), the redundant guards add noise without extra safety.

♻️ Suggested simplification
   test("produces readable error message for empty array", async () => {
     const tool = await getToolInfo()
-    expect(tool.formatValidationError).toBeDefined()
     const result = tool.parameters.safeParse({ tool_calls: [] })
     expect(result.success).toBe(false)
     if (!result.success) {
       const msg = tool.formatValidationError!(result.error)
       expect(msg).toContain("Invalid parameters for tool 'batch'")
       expect(msg).toContain("Expected payload format")
     }
   })

   test("includes field path in type error", async () => {
     const tool = await getToolInfo()
-    expect(tool.formatValidationError).toBeDefined()
     const result = tool.parameters.safeParse({
       tool_calls: [{ tool: 123, parameters: {} }],
     })
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@packages/opencode/test/tool/batch.test.ts` around lines 66 - 89, Remove the
redundant existence checks for formatValidationError in the two tests "produces
readable error message for empty array" and "includes field path in type error":
delete the expect(tool.formatValidationError).toBeDefined() calls and rely on
the non-null assertion (tool.formatValidationError!) when formatting the error;
keep the rest of each test (calling tool.parameters.safeParse, asserting
result.success is false, and invoking tool.formatValidationError!(result.error)
to assert message contents).
🤖 Prompt for all review comments with AI agents
Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@packages/opencode/test/command/hints.test.ts`:
- Around line 13-15: The test description/comment is contradictory: update the
test name/comment that currently reads "sorts numbered placeholders numerically
by string sort" to explicitly state lexicographic/string sorting (e.g., "sorts
numbered placeholders lexicographically (string order)") so it matches the
assertion on Command.hints("$2 then $1 then $10") expecting ["$1","$10","$2"];
ensure the comment about "$10" sorting before "$2" is worded to reflect string
order rather than "numerically".

---

Nitpick comments:
In `@packages/opencode/test/tool/batch.test.ts`:
- Around line 92-99: Rename the describe block to accurately reflect what the
tests assert: update the describe title from "BatchTool: DISALLOWED set
enforcement" to something like "BatchTool: id and runtime-enforced limits" or
"BatchTool: metadata and schema capacity" so it matches the assertions (e.g.,
checking BatchTool.id and any schema/capacity behavior). Locate the describe
that wraps the test verifying BatchTool.id and change only the string identifier
to the clearer title; leave the test body and comments untouched.
- Around line 66-89: Remove the redundant existence checks for
formatValidationError in the two tests "produces readable error message for
empty array" and "includes field path in type error": delete the
expect(tool.formatValidationError).toBeDefined() calls and rely on the non-null
assertion (tool.formatValidationError!) when formatting the error; keep the rest
of each test (calling tool.parameters.safeParse, asserting result.success is
false, and invoking tool.formatValidationError!(result.error) to assert message
contents).
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Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 59cce8c9-7aa4-4e22-9426-20ca89b4b70a

📥 Commits

Reviewing files that changed from the base of the PR and between 8e11c7f and 0df1c04.

📒 Files selected for processing (3)
  • packages/opencode/test/altimate/tools/finops-formatting.test.ts
  • packages/opencode/test/command/hints.test.ts
  • packages/opencode/test/tool/batch.test.ts

Comment on lines +13 to +15
test("sorts numbered placeholders numerically by string sort", () => {
// $10 sorts after $1 and $2 in string order
expect(Command.hints("$2 then $1 then $10")).toEqual(["$1", "$10", "$2"])
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⚠️ Potential issue | 🟡 Minor

Fix contradictory sorting description in this test.

Line 13/Line 14 describe sorting ambiguously/incorrectly, while Line 15 correctly asserts lexicographic behavior ("$10" before "$2"). Please align the wording with the assertion.

Suggested wording fix
-  test("sorts numbered placeholders numerically by string sort", () => {
-    // $10 sorts after $1 and $2 in string order
+  test("sorts numbered placeholders lexicographically (string sort)", () => {
+    // In string sort: $1, $10, $2
     expect(Command.hints("$2 then $1 then $10")).toEqual(["$1", "$10", "$2"])
   })
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
test("sorts numbered placeholders numerically by string sort", () => {
// $10 sorts after $1 and $2 in string order
expect(Command.hints("$2 then $1 then $10")).toEqual(["$1", "$10", "$2"])
test("sorts numbered placeholders lexicographically (string sort)", () => {
// In string sort: $1, $10, $2
expect(Command.hints("$2 then $1 then $10")).toEqual(["$1", "$10", "$2"])
})
🤖 Prompt for AI Agents
Verify each finding against the current code and only fix it if needed.

In `@packages/opencode/test/command/hints.test.ts` around lines 13 - 15, The test
description/comment is contradictory: update the test name/comment that
currently reads "sorts numbered placeholders numerically by string sort" to
explicitly state lexicographic/string sorting (e.g., "sorts numbered
placeholders lexicographically (string order)") so it matches the assertion on
Command.hints("$2 then $1 then $10") expecting ["$1","$10","$2"]; ensure the
comment about "$10" sorting before "$2" is worded to reflect string order rather
than "numerically".

@anandgupta42
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Superseded by #439 which consolidates all 12 test PRs into one, deduplicates overlapping tests, and fixes bugs found during review.

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