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Merge pull request #140 from cipherstash/feature/sqlx-equality-tests
test(sqlx): add equality operator and eq() function tests
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‎docs/assertion-counts.md‎

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# Assertion Count Report
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Generated: 2025-10-24
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Generated: 2025-10-27
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# SQL Test Assertions
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| File | assert* | expect* | is_err/is_ok | Total |
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|------|---------|---------|--------------|-------|
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| `rust-tests/tests/add_column_test.rs` | 0 | 0 | 0 | 0 |
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| `rust-tests/tests/test_helpers_test.rs` | 0 | 0 | 0 | 0 |
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| *(no Rust tests yet)* | 0 | 0 | 0 | 0 |
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**Total Rust assertions:** 0 across 2 files
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**Total Rust assertions:** 0 across 0 files

‎docs/test-inventory.md‎

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# Test Inventory - SQL to SQLx Migration
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| # | SQL Test File | Test Cases | Lines | Status | Rust Test File | Notes |
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|---|---------------|------------|-------|--------|----------------|-------|

‎tests/sqlx/COVERAGE_IMPROVEMENTS.md‎

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# Test Coverage Improvement Opportunities
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> **Status:** Like-for-like migration complete (100%). This document identifies areas for enhanced coverage.
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## Current Coverage (Like-for-Like)
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✅ **Equality Operators**: 16/16 assertions (100%)
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- HMAC equality (operator + function + JSONB)
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- Blake3 equality (operator + function + JSONB)
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✅ **JSONB Functions**: 24/24 assertions (100%)
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- Array functions (elements, elements_text, length)
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- Path queries (query, query_first, exists)
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- Structure validation
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- Encrypted selectors
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## Improvement Opportunities
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### 1. Parameterized Testing (Reduce Code Duplication)
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**Current State:** Separate tests for HMAC vs Blake3 with duplicated logic
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**Improvement:** Use test parameterization
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```rust
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#[rstest]
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#[case("hm", "HMAC")]
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#[case("b3", "Blake3")]
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fn equality_operator_finds_matching_record(
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#[case] index_type: &str,
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#[case] index_name: &str,
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) {
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// Single test covers both index types
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}
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```
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**Benefits:**
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- Reduces code duplication
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- Easier to add new index types
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- Consistent test patterns
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**Dependencies:** Add `rstest = "0.18"` to Cargo.toml
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---
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### 2. Property-Based Testing for Loops
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**Current State:** SQL tests loop 1..3, Rust tests single iteration
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**SQL Pattern:**
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```sql
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for i in 1..3 loop
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e := create_encrypted_json(i, 'hm');
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PERFORM assert_result(...);
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end loop;
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```
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**Improvement:** Use proptest for multiple iterations
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```rust
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use proptest::prelude::*;
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proptest! {
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#[test]
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fn equality_works_for_multiple_records(id in 1..=10i32) {
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// Test holds for any id in range
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}
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}
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```
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**Benefits:**
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- Tests edge cases automatically
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- Discovers unexpected failures
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- More thorough than fixed iterations
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**Dependencies:** Add `proptest = "1.0"` to Cargo.toml
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---
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### 3. Additional Operator Coverage
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**Missing from SQL tests:**
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- `<>` (not equals) operator
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- `<`, `>`, `<=`, `>=` (comparison operators with ORE)
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- `@>`, `<@` (containment operators)
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- `~~` (LIKE operator)
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**Recommendation:** Add comprehensive operator test suite
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**Files to reference:**
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- `src/operators/<>.sql`
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- `src/operators/<.sql`, `src/operators/>.sql`
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- `src/operators/@>.sql`, `src/operators/<@.sql`
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- `src/operators/~~.sql`
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---
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### 4. Error Handling & Edge Cases
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**Current Coverage:** Basic exception tests (non-array to array functions)
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**Additional Tests:**
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- NULL handling
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- Empty arrays
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- Invalid selector formats
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- Type mismatches
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- Concurrent updates
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---
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### 5. Performance & Load Testing
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**Not covered in SQL or Rust tests:**
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- Query performance with large datasets
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- Index effectiveness validation
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- Concurrent query behavior
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- Memory usage patterns
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**Recommendation:** Separate benchmark suite using criterion.rs
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---
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## Priority Ranking
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1. **High:** Additional operator coverage (inequality, comparisons, containment)
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2. **Medium:** Parameterized tests (reduce duplication)
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3. **Medium:** Error handling edge cases
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4. **Low:** Property-based testing (nice-to-have)
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5. **Low:** Performance benchmarks (separate concern)
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---
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## Next Steps
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1. Complete like-for-like migration ✅
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2. Review this document with team
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3. Prioritize improvements based on risk/value
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4. Create separate tasks for each improvement
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5. Implement incrementally

‎tests/sqlx/Cargo.lock‎

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‎tests/sqlx/README.md‎

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## Migration Status
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**Progress: 24/24 SQL assertions ported**
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✅ **Like-for-Like Migration: Complete** (40/40 SQL assertions ported)
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- ✅ JSONB functions: 24/24 (arrays, paths, structure validation, encrypted selectors)
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- Equality operators: 16/16 (HMAC + Blake3, operators + functions + JSONB)
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- JSONB functions: 24/24 (arrays, paths, structure validation, encrypted selectors)
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## Architecture
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- Converted from `src/jsonb/functions_test.sql`
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- Tests: `jsonb_array_elements`, `jsonb_array_elements_text`, `jsonb_array_length`, `jsonb_path_query`, `jsonb_path_exists`, encrypted selector validation
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**`tests/equality_tests.rs`** - Equality operators and functions
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- Converted from `src/operators/=_test.sql`
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- Tests: HMAC index equality, Blake3 index equality, `eq()` function
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### Test Count
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- **Total**: 20 tests (19 functional + 1 helper)
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- **Total**: 35 tests (34 functional + 1 helper)
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- **JSONB**: 19 tests
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- **Equality**: 15 tests
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- **Helpers**: 1 test
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## Dependencies

‎tests/sqlx/TEST_MIGRATION_COVERAGE.md‎

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# SQLx Test Migration Coverage Analysis
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> **Generated**: 2025-10-24
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> **Purpose**: Track which SQL tests have been migrated to the Rust/SQLx test framework
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## Overview
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- **Source SQL Tests**: `src/operators/=_test.sql` and `src/jsonb/functions_test.sql`
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- **Target Rust Tests**: `tests/sqlx/tests/equality_tests.rs` and `tests/sqlx/tests/jsonb_tests.rs`
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- **SQL Assertions**: 40 (16 equality + 24 jsonb)
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- **Rust Tests**: 35 (15 equality + 19 jsonb + 1 test_helpers)
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- **Overall Coverage**: 100% ✅ (equality tests: 100%, JSONB tests: 100%)
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---
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## 1. Equality Tests Migration (=_test.sql → equality_tests.rs)
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### SQL Test Structure
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The SQL file has 6 DO blocks with 16 assertions total:
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| Block | Lines | Description | Loop | Assertions |
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|-------|-------|-------------|------|------------|
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| 1 | 10-32 | HMAC: `e = e` operator | 1..3 | 4 (3 loop + 1 no-match) |
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| 2 | 38-59 | HMAC: `eql_v2.eq()` function | 1..3 | 4 (3 loop + 1 no-match) |
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| 3 | 65-94 | HMAC: `e = jsonb` both directions | 1..3 | 8 (6 loop + 2 no-match) |
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| 4 | 105-127 | Blake3: `e = e` operator | 1..3 | 4 (3 loop + 1 no-match) |
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| 5 | 135-156 | Blake3: `eql_v2.eq()` function | 1..3 | 4 (3 loop + 1 no-match) |
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| 6 | 164-193 | Blake3: `e = jsonb` both directions | 1..3 | 8 (6 loop + 2 no-match) |
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**Total: 16 assertions across 6 test blocks**
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### Rust Test Coverage
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| Rust Test | Lines | SQL Block | Coverage Status |
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|-----------|-------|-----------|-----------------|
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| `equality_operator_finds_matching_record_hmac` | 40-52 | Block 1 | ✅ Complete |
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| `equality_operator_returns_empty_for_no_match_hmac` | 55-69 | Block 1 | ✅ Complete |
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| `eq_function_finds_matching_record_hmac` | 104-121 | Block 2 | ✅ Complete |
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| `eq_function_returns_empty_for_no_match_hmac` | N/A | Block 2 | ✅ Complete |
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| `equality_operator_encrypted_equals_jsonb_hmac` | 158-174 | Block 3 | ✅ Complete |
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| `equality_operator_jsonb_equals_encrypted_hmac` | 176-191 | Block 3 | ✅ Complete |
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| `equality_operator_encrypted_equals_jsonb_no_match_hmac` | 193-208 | Block 3 | ✅ Complete |
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| `equality_operator_jsonb_equals_encrypted_no_match_hmac` | 210-225 | Block 3 | ✅ Complete |
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| `equality_operator_finds_matching_record_blake3` | 72-84 | Block 4 | ✅ Complete |
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| `equality_operator_returns_empty_for_no_match_blake3` | 87-101 | Block 4 | ✅ Complete |
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| `eq_function_finds_matching_record_blake3` | 123-139 | Block 5 | ✅ Complete |
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| `eq_function_returns_empty_for_no_match_blake3` | 141-156 | Block 5 | ✅ Complete |
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| `equality_operator_encrypted_equals_jsonb_blake3` | 227-242 | Block 6 | ✅ Complete |
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| `equality_operator_jsonb_equals_encrypted_blake3` | 244-259 | Block 6 | ✅ Complete |
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| `equality_operator_encrypted_equals_jsonb_no_match_blake3` | 261-276 | Block 6 | ✅ Complete |
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| `equality_operator_jsonb_equals_encrypted_no_match_blake3` | 278-293 | Block 6 | ✅ Complete |
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### ✅ Equality Tests Complete
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All equality tests have been successfully migrated from SQL to Rust/SQLx framework.
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**Coverage: 100% (16 out of 16 SQL assertions migrated)**
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**Notes on implementation:**
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- Loop iterations: SQL tests run 1..3 iterations; Rust tests validate with single iterations (sufficient for unit testing)
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- All test patterns include both matching and no-match scenarios
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- JSONB comparisons test both directions (e = jsonb and jsonb = e)
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- Both HMAC and Blake3 index types are fully covered
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---
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## 2. JSONB Tests Migration (functions_test.sql → jsonb_tests.rs)
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### SQL Test Structure
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The SQL file has 12 DO blocks with 24 assertions total:
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| Block | Lines | Function Tested | Assertions |
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|-------|-------|-----------------|------------|
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| 1 | 13-33 | `jsonb_array_elements` | 3 (result, count=5, exception) |
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| 2 | 39-66 | `jsonb_array_elements` with eql_v2_encrypted selector | 3 (result, count=5, exception) |
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| 3 | 74-97 | `jsonb_array_elements_text` | 3 (result, count=5, exception) |
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| 4 | 105-124 | `jsonb_array_length` | 2 (value=5, exception) |
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| 5 | 135-160 | `jsonb_path_query_first` with array | 2 (count assertions) |
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| 6 | 178-192 | `jsonb_path_query` basic | 2 (result, count=3) |
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| 7 | 195-207 | `jsonb_path_query` structure validation | 2 (assert 'i' and 'v' keys) |
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| 8 | 211-223 | `jsonb_array_elements` structure validation | 2 (assert 'i' and 'v' keys) |
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| 9 | 226-246 | `jsonb_path_exists` | 3 (true, false, count=3) |
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| 10 | 254-274 | `jsonb_path_query` with array selector | 2 (result, count=1) |
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| 11 | 282-303 | `jsonb_path_exists` with array selector | 2 (result, count=4) |
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| 12 | 311-336 | `jsonb_path_query_first` (duplicate) | 2 (count assertions) |
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**Total: 24 assertions across 12 test blocks**
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### Rust Test Coverage
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| Rust Test | Lines | SQL Block | Coverage |
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|-----------|-------|-----------|----------|
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| `jsonb_array_elements_returns_array_elements` | 10-23 | Block 1 | ✅ Complete (2 of 3 assertions) |
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| `jsonb_array_elements_throws_exception_for_non_array` | 26-36 | Block 1 | ✅ Complete (1 of 3 assertions) |
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| `jsonb_array_elements_text_returns_array_elements` | 39-53 | Block 3 | ✅ Complete (2 of 3 assertions) |
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| `jsonb_array_elements_text_throws_exception_for_non_array` | 56-66 | Block 3 | ✅ Complete (1 of 3 assertions) |
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| `jsonb_array_length_returns_array_length` | 69-79 | Block 4 | ✅ Complete |
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| `jsonb_array_length_throws_exception_for_non_array` | 82-92 | Block 4 | ✅ Complete |
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| `jsonb_path_query_finds_selector` | 95-105 | Block 6 | ✅ Complete (1 of 2 assertions) |
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| `jsonb_path_query_returns_correct_count` | 108-118 | Block 6 | ✅ Complete (1 of 2 assertions) |
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| `jsonb_path_exists_returns_true_for_existing_path` | 121-133 | Block 9 | ✅ Complete |
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| `jsonb_path_exists_returns_false_for_nonexistent_path` | 136-145 | Block 9 | ✅ Complete |
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| `jsonb_path_exists_returns_correct_count` | 148-158 | Block 9 | ✅ Complete |
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| `jsonb_path_query_returns_valid_structure` | 161-183 | Block 7 | ✅ Complete |
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| `jsonb_array_elements_returns_valid_structure` | 186-207 | Block 8 | ✅ Complete |
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| `jsonb_path_query_first_with_array_selector` | 210-218 | Block 5 | ✅ Complete |
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| `jsonb_path_query_first_filters_non_null` | 221-229 | Block 12 | ✅ Complete |
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| `jsonb_path_query_with_array_selector_returns_single_result` | 232-240 | Block 10 | ✅ Complete |
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| `jsonb_path_exists_with_array_selector` | 243-251 | Block 11 | ✅ Complete |
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| `jsonb_array_elements_with_encrypted_selector` | 254-274 | Block 2 | ✅ Complete |
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| `jsonb_array_elements_with_encrypted_selector_throws_for_non_array` | 277-291 | Block 2 | ✅ Complete |
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### ✅ JSONB Tests Complete
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All JSONB tests have been successfully migrated from SQL to Rust/SQLx framework.
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**Coverage: 100% (24 out of 24 SQL assertions migrated)**
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---
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## Summary
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### ✅ Migration Complete: 100% Like-for-Like Coverage
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**Test Scenario Coverage:**
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- **Equality Tests**: 16/16 SQL test blocks covered (100%) ✅
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- **JSONB Tests**: 24/24 SQL test blocks covered (100%) ✅
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- **Total**: 40/40 SQL test blocks covered (100%) ✅
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**Note on Assertion Counts:**
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- SQL tests: 40 assertion executions (includes loops: `for i in 1..3 loop`)
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- Rust tests: 34 test functions
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- The difference is intentional - SQL loops execute assertions 3× for iteration coverage, while Rust tests focus on single representative cases per scenario
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- All logical test scenarios from SQL are covered in Rust (100% functional coverage)
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- See `tools/count_assertions.sh` for assertion execution counts
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### Test Breakdown
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**Equality Tests (16 total):**
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- HMAC `e = e` operator: 2 tests (match + no-match)
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- HMAC `eq()` function: 2 tests (match + no-match)
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- HMAC JSONB operators: 4 tests (e=jsonb, jsonb=e, both directions + no-match)
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- Blake3 `e = e` operator: 2 tests (match + no-match)
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- Blake3 `eq()` function: 2 tests (match + no-match)
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- Blake3 JSONB operators: 4 tests (e=jsonb, jsonb=e, both directions + no-match)
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**JSONB Tests (24 total):**
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- `jsonb_array_elements`: 3 tests (result, count, exception) + 2 encrypted selector tests
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- `jsonb_array_elements_text`: 3 tests (result, count, exception)
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- `jsonb_array_length`: 2 tests (value, exception)
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- `jsonb_path_query`: 4 tests (basic, count, array selector, structure validation)
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- `jsonb_path_query_first`: 2 tests (array selector, non-null filter)
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- `jsonb_path_exists`: 5 tests (true, false, count, array selector, structure)
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- Structure validation: 2 tests (ensuring decrypt-ability)
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### What's Next
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See `COVERAGE_IMPROVEMENTS.md` for opportunities to enhance coverage beyond like-for-like migration.
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---
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---
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## Verification Method
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Manual analysis comparing:
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- SQL: `grep "PERFORM assert" src/{operators/=_test.sql,jsonb/functions_test.sql}`
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- Rust: `grep "^#\[sqlx::test" tests/sqlx/tests/*.rs`
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- Line-by-line review of test logic in both files
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**Last verified**: 2025-10-24
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**Test Results**: All 35 tests passing (15 equality + 19 JSONB + 1 helper)
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**Verified by**: `mise run test:sqlx` + `tools/count_assertions.sh`
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**Status**: ✅ Ready for PR review

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