swc-sourcemap/tests/test_encoder.rs at 3b3ef84b3f5b21c4b061f3f83d5e9021f04cdb37 · swc-project/swc-sourcemap · GitHub

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use swc_sourcemap::SourceMap;

#[test]
fn test_basic_sourcemap() {
    let input: &[_] = br#"{
        "version": 3,
        "sources": ["coolstuff.js"],
        "names": ["x","alert"],
        "mappings": "AAAA,GAAIA,GAAI,EACR,IAAIA,GAAK,EAAG,CACVC,MAAM"
    }"#;
    let sm = SourceMap::from_reader(input).unwrap();
    let mut out: Vec<u8> = vec![];
    sm.to_writer(&mut out).unwrap();

    let sm2 = SourceMap::from_reader(&out[..]).unwrap();

    for (tok1, tok2) in sm.tokens().zip(sm2.tokens()) {
        assert_eq!(tok1, tok2);
    }
}

#[test]
fn test_sourcemap_data_url() {
    let input: &[_] = br#"{"version":3,"file":"build/foo.min.js","sources":["src/foo.js"],"names":[],"mappings":"AAAA","sourceRoot":"/"}"#;
    let sm = SourceMap::from_reader(input).unwrap();
    assert_eq!(sm.to_data_url().unwrap(), "data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVpbGQvZm9vLm1pbi5qcyIsInNvdXJjZXMiOlsic3JjL2Zvby5qcyJdLCJzb3VyY2VSb290IjoiLyIsIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBIn0=");
}

#[test]
fn test_basic_range() {
    let input: &[_] = br#"{
        "version": 3,
        "sources": [null],
        "names": ["console","log","ab"],
        "mappings": "AACAA,QAAQC,GAAG,CAAC,OAAM,OAAM,QACxBD,QAAQC,GAAG,CAAC,QAEZD,QAAQC,GAAG,CAJD;IAACC,IAAI;AAAI,IAKnBF,QAAQC,GAAG,CAAC,YACZD,QAAQC,GAAG,CAAC",
        "rangeMappings": "AAB;;g"
    }"#;
    let sm = SourceMap::from_reader(input).unwrap();
    let mut out: Vec<u8> = vec![];
    sm.to_writer(&mut out).unwrap();

    let sm2 = SourceMap::from_reader(&out[..]).unwrap();

    for (tok1, tok2) in sm.tokens().zip(sm2.tokens()) {
        assert_eq!(tok1, tok2);
    }
}

#[test]
fn test_empty_range() {
    let input = r#"{
        "version": 3,
        "sources": [null],
        "names": ["console","log","ab"],
        "mappings": "AACAA,QAAQC,GAAG,CAAC,OAAM,OAAM,QACxBD,QAAQC,GAAG,CAAC,QAEZD,QAAQC,GAAG,CAJD;IAACC,IAAI;AAAI,IAKnBF,QAAQC,GAAG,CAAC,YACZD,QAAQC,GAAG,CAAC",
        "rangeMappings": ""
    }"#;
    let sm = SourceMap::from_reader(input.as_bytes()).unwrap();
    let mut out: Vec<u8> = vec![];
    sm.to_writer(&mut out).unwrap();

    let out = String::from_utf8(out).unwrap();
    assert!(!out.contains("rangeMappings"));
}

#[test]
fn test_sourcemap_serializes_camel_case_debug_id() {
    const DEBUG_ID: &str = "0123456789abcdef0123456789abcdef";
    let input = format!(
        r#"{{
            "version": 3,
            "sources": [],
            "names": [],
            "mappings": "",
            "debug_id": "{}"
        }}"#,
        DEBUG_ID
    );

    let sm = SourceMap::from_reader(input.as_bytes()).unwrap();
    let expected = sm.get_debug_id().expect("debug id parsed").to_string();
    let mut out: Vec<u8> = vec![];
    sm.to_writer(&mut out).unwrap();
    let serialized = String::from_utf8(out).unwrap();

    assert!(
        serialized.contains(&format!(r#""debugId":"{}""#, expected)),
        "expected camelCase debugId in {}",
        serialized
    );
    assert!(
        !serialized.contains("debug_id"),
        "unexpected snake_case key in {}",
        serialized
    );
}