words definition

tests/forth/definitions.rs

@@ -0,0 +1,115 @@
+use super::harness::*;
+
+#[test]
+fn define_and_use_word() {
+    expect_int(": double 2 * ; 5 double", 10);
+}
+
+#[test]
+fn define_word_with_multiple_ops() {
+    expect_int(": triple dup dup + + ; 3 triple", 9);
+}
+
+#[test]
+fn define_word_using_another_user_word() {
+    expect_int(": double 2 * ; : quad double double ; 3 quad", 12);
+}
+
+#[test]
+fn redefine_word_overwrites() {
+    expect_int(": foo 10 ; : foo 20 ; foo", 20);
+}
+
+#[test]
+fn word_with_param() {
+    let outputs = expect_outputs(": loud 0.9 gain ; \"kick\" s loud emit", 1);
+    assert!(outputs[0].contains("gain/0.9"));
+}
+
+#[test]
+fn word_available_across_evaluations() {
+    let f = forth();
+    let ctx = default_ctx();
+    f.evaluate(": hi 42 ;", &ctx).unwrap();
+    f.evaluate("hi", &ctx).unwrap();
+    assert_eq!(stack_int(&f), 42);
+}
+
+#[test]
+fn word_defined_in_one_forth_available_in_same() {
+    let f = forth();
+    let ctx = default_ctx();
+    f.evaluate(": ten 10 ;", &ctx).unwrap();
+    f.clear_stack();
+    f.evaluate("ten ten +", &ctx).unwrap();
+    assert_eq!(stack_int(&f), 20);
+}
+
+#[test]
+fn unknown_word_errors() {
+    expect_error("nosuchword", "unknown word");
+}
+
+#[test]
+fn missing_semicolon_errors() {
+    expect_error(": foo 10", "missing ';'");
+}
+
+#[test]
+fn missing_name_errors() {
+    expect_error(":", "expected word name");
+}
+
+#[test]
+fn unexpected_semicolon_errors() {
+    expect_error(";", "unexpected ;");
+}
+
+#[test]
+fn apply_executes_quotation() {
+    expect_int("5 { 2 * } apply", 10);
+}
+
+#[test]
+fn apply_with_stack_ops() {
+    expect_int("3 4 { + } apply", 7);
+}
+
+#[test]
+fn apply_empty_stack_errors() {
+    expect_error("apply", "stack underflow");
+}
+
+#[test]
+fn apply_non_quotation_errors() {
+    expect_error("42 apply", "expected quotation");
+}
+
+#[test]
+fn apply_nested() {
+    expect_int("2 { { 3 * } apply } apply", 6);
+}
+
+#[test]
+fn define_word_containing_quotation() {
+    expect_int(": dbl { 2 * } apply ; 7 dbl", 14);
+}
+
+#[test]
+fn define_word_with_sound() {
+    let outputs = expect_outputs(": kick \"kick\" s emit ; kick", 1);
+    assert!(outputs[0].contains("sound/kick"));
+}
+
+#[test]
+fn define_word_with_conditional() {
+    let f = forth();
+    let ctx = default_ctx();
+    f.evaluate(": maybe-double dup 5 gt if 2 * then ;", &ctx).unwrap();
+    f.clear_stack();
+    f.evaluate("3 maybe-double", &ctx).unwrap();
+    assert_eq!(stack_int(&f), 3);
+    f.clear_stack();
+    f.evaluate("10 maybe-double", &ctx).unwrap();
+    assert_eq!(stack_int(&f), 20);
+}

tests/forth/harness.rs

@@ -1,6 +1,6 @@
 use rand::rngs::StdRng;
 use rand::SeedableRng;
-use cagire::model::forth::{Forth, Rng, StepContext, Value, Variables};
+use cagire::model::forth::{Dictionary, Forth, Rng, StepContext, Value, Variables};
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 
@@ -29,16 +29,20 @@ pub fn new_vars() -> Variables {
     Arc::new(Mutex::new(HashMap::new()))
 }
 
+pub fn new_dict() -> Dictionary {
+    Arc::new(Mutex::new(HashMap::new()))
+}
+
 pub fn seeded_rng(seed: u64) -> Rng {
     Arc::new(Mutex::new(StdRng::seed_from_u64(seed)))
 }
 
 pub fn forth() -> Forth {
-    Forth::new(new_vars(), seeded_rng(42))
+    Forth::new(new_vars(), new_dict(), seeded_rng(42))
 }
 
 pub fn forth_seeded(seed: u64) -> Forth {
-    Forth::new(new_vars(), seeded_rng(seed))
+    Forth::new(new_vars(), new_dict(), seeded_rng(seed))
 }
 
 pub fn run(script: &str) -> Forth {