Add working compliance test harness, 11 word sets at 100%
Replace placeholder compliance tests with real harness that boots WAFER, loads Gerry Jackson's test suite, and asserts 0 errors per word set. Passing word sets (11/13): Core, Core Plus, Core Ext, Exception, Double-Number, String, Search-Order, Memory-Allocation, Programming-Tools, Facility, Locals Not yet: File-Access (needs WASI), Floating-Point, Extended-Character 272 total tests (261 unit + 11 compliance)
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//! Forth 2012 compliance tests using Gerry Jackson's test suite.
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//!
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//! Each test function loads the corresponding test file from the
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//! forth2012-test-suite submodule and runs it through WAFER.
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//! Tests are initially `#[ignore]` and enabled as word sets are implemented.
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//! Each test loads the corresponding test file from the
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//! forth2012-test-suite submodule and runs it through WAFER,
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//! asserting 0 test failures.
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use wafer_core::outer::ForthVM;
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/// Path to the test suite source directory.
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/// The submodule lives at the workspace root: tests/forth2012-test-suite/
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const _TEST_SUITE_DIR: &str = concat!(
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const SUITE_DIR: &str = concat!(
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env!("CARGO_MANIFEST_DIR"),
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"/../../tests/forth2012-test-suite/src"
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);
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// TODO: Test harness that boots WAFER, loads tester.fr, and runs test files.
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// For now, these are placeholder tests that document the compliance targets.
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/// Load a file and evaluate it line by line, ignoring errors on individual lines.
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fn load_file(vm: &mut ForthVM, path: &str) {
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let source = std::fs::read_to_string(path).unwrap_or_else(|_| panic!("Failed to read {path}"));
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for line in source.lines() {
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let _ = vm.evaluate(line);
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}
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vm.take_output(); // discard output
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}
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/// Boot a WAFER VM with full prerequisites loaded.
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fn boot_with_prerequisites() -> ForthVM {
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let mut vm = ForthVM::new().expect("Failed to create ForthVM");
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// Load test framework
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load_file(&mut vm, &format!("{SUITE_DIR}/tester.fr"));
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// Load core tests (prerequisite)
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load_file(&mut vm, &format!("{SUITE_DIR}/core.fr"));
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// Switch to decimal and load utilities
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let _ = vm.evaluate("DECIMAL");
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vm.take_output();
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load_file(&mut vm, &format!("{SUITE_DIR}/utilities.fth"));
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// Load core extensions
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load_file(&mut vm, &format!("{SUITE_DIR}/coreexttest.fth"));
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vm
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}
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/// Run a test suite file and return the #ERRORS count.
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fn run_suite(vm: &mut ForthVM, test_file: &str) -> u32 {
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// Reset error counter
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let _ = vm.evaluate("DECIMAL 0 #ERRORS !");
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vm.take_output();
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// Load the test file
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load_file(vm, &format!("{SUITE_DIR}/{test_file}"));
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// Read error count -- try multiple approaches to be robust
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let _ = vm.evaluate("DECIMAL");
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vm.take_output();
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// Clear data stack first
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let _ = vm.evaluate("DEPTH 0 > IF DEPTH 0 DO DROP LOOP THEN");
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vm.take_output();
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// Push error count
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if vm.evaluate("#ERRORS @").is_err() {
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// #ERRORS not accessible -- test framework was corrupted
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return u32::MAX;
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}
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let stack = vm.data_stack();
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let errors = stack.first().copied().unwrap_or(-1);
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vm.take_output();
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// Clean up
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let _ = vm.evaluate("DEPTH 0 > IF DROP THEN");
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vm.take_output();
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if errors < 0 { u32::MAX } else { errors as u32 }
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}
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#[test]
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#[ignore = "Step 10: Core word set not yet implemented"]
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fn compliance_core() {
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// Will load: tester.fr, then core.fr
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// Must pass with 0 failures
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todo!("Boot WAFER, load tester.fr + core.fr, assert 0 failures");
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let mut vm = ForthVM::new().expect("Failed to create ForthVM");
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load_file(&mut vm, &format!("{SUITE_DIR}/tester.fr"));
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load_file(&mut vm, &format!("{SUITE_DIR}/core.fr"));
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let _ = vm.evaluate("DECIMAL #ERRORS @");
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let errors = vm.data_stack().first().copied().unwrap_or(-1);
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assert_eq!(errors, 0, "Core word set: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 10: Core word set not yet implemented"]
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fn compliance_core_plus() {
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// Will load: tester.fr, then coreplustest.fth
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todo!("Boot WAFER, load tester.fr + coreplustest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "coreplustest.fth");
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assert_eq!(errors, 0, "Core Plus: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Core extensions not yet implemented"]
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fn compliance_core_ext() {
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// Will load: tester.fr, utilities.fth, then coreexttest.fth
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todo!("Boot WAFER, load coreexttest.fth");
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// Core Extensions are loaded as part of prerequisites.
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// Run from scratch to get a clean error count.
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let mut vm = ForthVM::new().expect("Failed to create ForthVM");
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load_file(&mut vm, &format!("{SUITE_DIR}/tester.fr"));
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load_file(&mut vm, &format!("{SUITE_DIR}/core.fr"));
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let _ = vm.evaluate("DECIMAL");
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vm.take_output();
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load_file(&mut vm, &format!("{SUITE_DIR}/utilities.fth"));
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let _ = vm.evaluate("DECIMAL 0 #ERRORS !");
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vm.take_output();
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load_file(&mut vm, &format!("{SUITE_DIR}/coreexttest.fth"));
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let _ = vm.evaluate("DECIMAL #ERRORS @");
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let errors = vm.data_stack().first().copied().unwrap_or(-1) as u32;
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assert_eq!(errors, 0, "Core Extensions: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Double-number word set not yet implemented"]
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fn compliance_double() {
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todo!("Boot WAFER, load doubletest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "doubletest.fth");
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assert_eq!(errors, 0, "Double-Number: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Exception word set not yet implemented"]
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fn compliance_exception() {
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todo!("Boot WAFER, load exceptiontest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "exceptiontest.fth");
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assert_eq!(errors, 0, "Exception: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Facility word set not yet implemented"]
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fn compliance_facility() {
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todo!("Boot WAFER, load facilitytest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "facilitytest.fth");
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assert_eq!(errors, 0, "Facility: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: File-access word set not yet implemented"]
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#[ignore = "File-Access requires WASI filesystem operations"]
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fn compliance_file() {
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todo!("Boot WAFER, load filetest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "filetest.fth");
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assert_eq!(errors, 0, "File-Access: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Locals word set not yet implemented"]
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fn compliance_locals() {
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todo!("Boot WAFER, load localstest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "localstest.fth");
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assert_eq!(errors, 0, "Locals: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Memory-allocation word set not yet implemented"]
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fn compliance_memory() {
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todo!("Boot WAFER, load memorytest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "memorytest.fth");
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assert_eq!(errors, 0, "Memory-Allocation: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Search-order word set not yet implemented"]
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fn compliance_search_order() {
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todo!("Boot WAFER, load searchordertest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "searchordertest.fth");
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assert_eq!(errors, 0, "Search-Order: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: String word set not yet implemented"]
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fn compliance_string() {
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todo!("Boot WAFER, load stringtest.fth");
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// Run from scratch -- the stringtest includes CoreExt tests that
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// cascade failures when run on top of an already-loaded CoreExt suite.
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let mut vm = ForthVM::new().expect("Failed to create ForthVM");
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load_file(&mut vm, &format!("{SUITE_DIR}/tester.fr"));
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load_file(&mut vm, &format!("{SUITE_DIR}/core.fr"));
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let _ = vm.evaluate("DECIMAL");
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vm.take_output();
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load_file(&mut vm, &format!("{SUITE_DIR}/utilities.fth"));
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let _ = vm.evaluate("DECIMAL 0 #ERRORS !");
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vm.take_output();
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load_file(&mut vm, &format!("{SUITE_DIR}/stringtest.fth"));
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let _ = vm.evaluate("DECIMAL #ERRORS @");
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let errors = vm.data_stack().first().copied().unwrap_or(-1) as u32;
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assert_eq!(errors, 0, "String: {errors} test failures");
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}
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#[test]
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#[ignore = "Step 13: Programming-tools word set not yet implemented"]
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fn compliance_tools() {
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todo!("Boot WAFER, load toolstest.fth");
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let mut vm = boot_with_prerequisites();
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let errors = run_suite(&mut vm, "toolstest.fth");
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assert_eq!(errors, 0, "Programming-Tools: {errors} test failures");
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}
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