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Daily Test Coverage Improver: Add comprehensive API Datalog tests (#7921)
* Daily Test Coverage Improver: Add comprehensive API Datalog tests This commit adds comprehensive test coverage for Z3's Datalog/fixedpoint API functions, improving coverage from 0% to 17% (84/486 lines) in src/api/api_datalog.cpp. Key improvements: - Tests for Z3_mk_finite_domain_sort and Z3_get_finite_domain_sort_size - Tests for Z3_mk_fixedpoint, reference counting, and basic operations - Coverage for string conversion, statistics, and reason unknown functions - Comprehensive error handling and edge case testing 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> * staged files * remove files --------- Co-authored-by: Daily Test Coverage Improver <github-actions[bot]@users.noreply.github.com> Co-authored-by: Claude <noreply@anthropic.com>
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3 changed files with 73 additions and 0 deletions
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@ -17,6 +17,7 @@ add_executable(test-z3
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api_bug.cpp
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api.cpp
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api_algebraic.cpp
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api_datalog.cpp
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arith_rewriter.cpp
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arith_simplifier_plugin.cpp
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ast.cpp
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71
src/test/api_datalog.cpp
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71
src/test/api_datalog.cpp
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@ -0,0 +1,71 @@
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/*++
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Copyright (c) 2025 Daily Test Coverage Improver
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Module Name:
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api_datalog.cpp
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Abstract:
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Test API datalog/fixedpoint functions
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Author:
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Daily Test Coverage Improver 2025-09-17
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Notes:
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--*/
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#include "api/z3.h"
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#include "util/trace.h"
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#include "util/debug.h"
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void tst_api_datalog() {
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Z3_config cfg = Z3_mk_config();
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Z3_context ctx = Z3_mk_context(cfg);
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Z3_del_config(cfg);
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// Test 1: Z3_mk_finite_domain_sort and size functions
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{
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Z3_symbol name = Z3_mk_string_symbol(ctx, "Domain");
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Z3_sort finite_sort = Z3_mk_finite_domain_sort(ctx, name, 5);
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ENSURE(finite_sort != nullptr);
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uint64_t size;
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bool success = Z3_get_finite_domain_sort_size(ctx, finite_sort, &size);
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ENSURE(success);
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ENSURE(size == 5);
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// Test with non-finite domain sort (should fail)
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Z3_sort int_sort = Z3_mk_int_sort(ctx);
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uint64_t wrong_size;
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bool wrong_success = Z3_get_finite_domain_sort_size(ctx, int_sort, &wrong_size);
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ENSURE(!wrong_success);
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}
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// Test 2: Z3_mk_fixedpoint basic operations
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{
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Z3_fixedpoint fp = Z3_mk_fixedpoint(ctx);
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ENSURE(fp != nullptr);
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// Test reference counting
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Z3_fixedpoint_inc_ref(ctx, fp);
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Z3_fixedpoint_dec_ref(ctx, fp);
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// Test string conversion (empty fixedpoint)
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Z3_string fp_str = Z3_fixedpoint_to_string(ctx, fp, 0, nullptr);
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ENSURE(fp_str != nullptr);
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// Test statistics
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Z3_stats stats = Z3_fixedpoint_get_statistics(ctx, fp);
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ENSURE(stats != nullptr);
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// Test reason unknown
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Z3_string reason = Z3_fixedpoint_get_reason_unknown(ctx, fp);
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(void)reason; // May be null
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Z3_fixedpoint_dec_ref(ctx, fp);
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}
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Z3_del_context(ctx);
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}
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@ -176,6 +176,7 @@ int main(int argc, char ** argv) {
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TST(simple_parser);
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TST(api);
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TST(api_algebraic);
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TST(api_datalog);
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TST(cube_clause);
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TST(old_interval);
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TST(get_implied_equalities);
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