70 lines
1.3 KiB
Rust
70 lines
1.3 KiB
Rust
use super::harness::*;
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#[test]
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fn fetch_store() {
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expect_int(r#"42 !x @x"#, 42);
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}
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#[test]
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fn fetch_nonexistent() {
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expect_int(r#"@novar"#, 0);
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}
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#[test]
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fn persistence_across_evals() {
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let mut f = forth();
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let ctx = default_ctx();
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f.evaluate(r#"10 !counter"#, &ctx).unwrap();
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f.clear_stack();
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f.evaluate(r#"@counter 1 +"#, &ctx).unwrap();
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assert_eq!(stack_int(&f), 11);
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}
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#[test]
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fn overwrite() {
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expect_int(r#"1 !x 99 !x @x"#, 99);
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}
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#[test]
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fn multiple_vars() {
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let f = run(r#"10 !a 20 !b @a @b +"#);
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assert_eq!(stack_int(&f), 30);
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}
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#[test]
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fn float_var() {
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let f = run(r#"3.14 !pi @pi"#);
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let val = stack_float(&f);
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assert!((val - 3.14).abs() < 1e-9);
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}
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#[test]
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fn increment_pattern() {
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expect_int(r#"0 !n @n 1 + !n @n 1 + !n @n"#, 2);
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}
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#[test]
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fn set_keep() {
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expect_int(r#"42 ,x"#, 42);
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}
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#[test]
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fn set_keep_stores() {
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let mut f = forth();
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let ctx = default_ctx();
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f.evaluate(r#"42 ,x"#, &ctx).unwrap();
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f.clear_stack();
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f.evaluate(r#"@x"#, &ctx).unwrap();
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assert_eq!(stack_int(&f), 42);
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}
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#[test]
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fn set_keep_chain() {
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let mut f = forth();
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let ctx = default_ctx();
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f.evaluate(r#"10 ,a ,b"#, &ctx).unwrap();
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f.clear_stack();
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f.evaluate(r#"@a @b +"#, &ctx).unwrap();
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assert_eq!(stack_int(&f), 20);
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}
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