windjammer 0.48.0

A simple language inspired by Go, Ruby, and Elixir that transpiles to Rust - 80% of Rust's power with 20% of the complexity
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183

#![cfg(any(
    not(any(
        feature = "parser_tests",
        feature = "analyzer_tests",
        feature = "codegen_tests",
        feature = "interpreter_tests",
        feature = "conformance_tests",
        feature = "integration_tests",
    )),
    feature = "analyzer_tests",
))]

// Test that @test_cases decorator generates multiple test functions

use windjammer::analyzer::Analyzer;
use windjammer::codegen::rust::CodeGenerator;
use windjammer::lexer::Lexer;
use windjammer::parser::Parser;
use windjammer::CompilationTarget;

fn parse_and_generate(code: &str) -> String {
    let mut lexer = Lexer::new(code);
    let tokens = lexer.tokenize_with_locations();
    let mut parser = Parser::new(tokens);
    let program = parser.parse().unwrap();
    let mut analyzer = Analyzer::new();
    let (analyzed_functions, analyzed_structs, _analyzed_trait_methods) =
        analyzer.analyze_program(&program).unwrap();
    let mut generator = CodeGenerator::new_for_module(analyzed_structs, CompilationTarget::Rust);
    generator.generate_program(&program, &analyzed_functions)
}

#[test]
fn test_test_cases_basic() {
    let source = r#"
@test_cases([
    (5, 3, 8),
    (10, -5, 5),
    (0, 0, 0),
])
fn add_numbers(a: int, b: int, expected: int) {
    assert_eq(a + b, expected);
}
"#;

    let rust_code = parse_and_generate(source);

    println!("Generated Rust:\n{}", rust_code);

    // Should generate 3 test functions
    assert!(
        rust_code.contains("fn add_numbers_case_0()"),
        "Missing case 0"
    );
    assert!(
        rust_code.contains("fn add_numbers_case_1()"),
        "Missing case 1"
    );
    assert!(
        rust_code.contains("fn add_numbers_case_2()"),
        "Missing case 2"
    );

    // Should generate the implementation function
    assert!(
        rust_code.contains("fn add_numbers_impl("),
        "Missing impl function"
    );

    // Should have #[test] on each case
    assert_eq!(
        rust_code.matches("#[test]").count(),
        3,
        "Should have 3 #[test] attributes"
    );

    // Should call impl with correct arguments
    assert!(
        rust_code.contains("add_numbers_impl(5, 3, 8)"),
        "Missing case 0 call"
    );
    assert!(
        rust_code.contains("add_numbers_impl(10, -5, 5)")
            || rust_code.contains("add_numbers_impl(10, (-5), 5)"),
        "Missing case 1 call"
    );
    assert!(
        rust_code.contains("add_numbers_impl(0, 0, 0)"),
        "Missing case 2 call"
    );
}

#[test]
fn test_test_cases_string() {
    let source = r#"
@test_cases([
    ("hello", 5),
    ("world", 5),
    ("", 0),
])
fn string_length(input: string, expected: int) {
    let len = input.len() as int;
    assert_eq(len, expected);
}
"#;

    let rust_code = parse_and_generate(source);

    // Should generate 3 test functions
    assert!(
        rust_code.contains("fn string_length_case_0()"),
        "Missing case 0"
    );
    assert!(
        rust_code.contains("fn string_length_case_1()"),
        "Missing case 1"
    );
    assert!(
        rust_code.contains("fn string_length_case_2()"),
        "Missing case 2"
    );

    // Should generate the implementation function
    assert!(
        rust_code.contains("fn string_length_impl("),
        "Missing impl function"
    );

    // Should have #[test] on each case
    assert_eq!(
        rust_code.matches("#[test]").count(),
        3,
        "Should have 3 #[test] attributes"
    );
}

#[test]
fn test_test_cases_bool() {
    let source = r#"
@test_cases([
    (true, false),
    (false, true),
])
fn bool_negation(input: bool, expected: bool) {
    assert_eq(!input, expected);
}
"#;

    let rust_code = parse_and_generate(source);

    // Should generate 2 test functions
    assert!(
        rust_code.contains("fn bool_negation_case_0()"),
        "Missing case 0"
    );
    assert!(
        rust_code.contains("fn bool_negation_case_1()"),
        "Missing case 1"
    );

    // Should generate the implementation function
    assert!(
        rust_code.contains("fn bool_negation_impl("),
        "Missing impl function"
    );

    // Should have #[test] on each case
    assert_eq!(
        rust_code.matches("#[test]").count(),
        2,
        "Should have 2 #[test] attributes"
    );

    // Should call impl with correct arguments
    assert!(
        rust_code.contains("bool_negation_impl(true, false)"),
        "Missing case 0 call"
    );
    assert!(
        rust_code.contains("bool_negation_impl(false, true)"),
        "Missing case 1 call"
    );
}