ifc-lite-processing 6.0.1

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.

//! Tests for [`super`]. Split out so the module stays under its size budget,
//! the same shape `stream_meta.rs` uses.

use super::*;

const GEOREF_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef fixture'),'2;1');
FILE_NAME('georef.ifc','2026-06-01T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#1=IFCPROJECT('0$ScRe4drECQ4DMSqUjd6d',$,'P',$,$,$,$,(#2),#3);
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#3=IFCUNITASSIGNMENT((#6));
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#6=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
#10=IFCPROJECTEDCRS('EPSG:32632','WGS84 / UTM zone 32N','WGS84',$,'UTM','32N',$);
#11=IFCMAPCONVERSION(#2,#10,1000.5,2000.25,42.0,0.866025,0.5,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn extracts_map_conversion_and_crs() {
    let geo = extract_georeferencing(GEOREF_IFC).expect("expected georeferencing");
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:32632"));
    assert_eq!(geo.geodetic_datum.as_deref(), Some("WGS84"));
    assert_eq!(geo.map_projection.as_deref(), Some("UTM"));
    assert!((geo.eastings - 1000.5).abs() < 1e-6);
    assert!((geo.northings - 2000.25).abs() < 1e-6);
    assert!((geo.orthogonal_height - 42.0).abs() < 1e-6);
    // XAxisAbscissa/Ordinate = cos/sin(30°) → rotation_degrees ≈ 30.
    assert!(
        (geo.rotation_degrees - 30.0).abs() < 1e-3,
        "rotation should be ~30°, got {}",
        geo.rotation_degrees
    );
    // Translation column of the local→map matrix carries the offsets.
    assert!((geo.transform_matrix[12] - 1000.5).abs() < 1e-6);
    assert!((geo.transform_matrix[13] - 2000.25).abs() < 1e-6);
    // New parity fields (alignment audit): description/zone + provenance.
    assert_eq!(geo.crs_description.as_deref(), Some("WGS84 / UTM zone 32N"));
    assert_eq!(geo.map_zone.as_deref(), Some("32N"));
    // No MapUnit authored → project length unit applies (both None).
    assert_eq!(geo.map_unit, None);
    assert_eq!(geo.map_unit_scale, None);
    assert_eq!(geo.source.as_deref(), Some("mapConversion"));
}

/// IFC2x3 models carry georeferencing via an `ePSet_MapConversion` property
/// set rather than `IfcMapConversion`. Regression for the core extractor bug
/// that read `IfcPropertySet.Name` from attribute 0 (GlobalId) instead of 2.
const IFC2X3_PSET_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ifc2x3 georef pset fixture'),'2;1');
FILE_NAME('georef2x3.ifc','2026-06-01T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#1=IFCPROPERTYSINGLEVALUE('Eastings',$,IFCLENGTHMEASURE(1000.5),$);
#2=IFCPROPERTYSINGLEVALUE('Northings',$,IFCLENGTHMEASURE(2000.25),$);
#3=IFCPROPERTYSINGLEVALUE('OrthogonalHeight',$,IFCLENGTHMEASURE(42.),$);
#4=IFCPROPERTYSET('0PSet00000000000000001',$,'ePSet_MapConversion',$,(#1,#2,#3));
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn extracts_ifc2x3_epset_map_conversion_fallback() {
    let geo = extract_georeferencing(IFC2X3_PSET_IFC)
        .expect("expected georeferencing from ePSet_MapConversion");
    assert!((geo.eastings - 1000.5).abs() < 1e-6);
    assert!((geo.northings - 2000.25).abs() < 1e-6);
    assert!((geo.orthogonal_height - 42.0).abs() < 1e-6);
}

/// Real-world fixture mirroring the `ifc-georeferencer` post-processor:
/// lowercase `ePset_…` property-set names and a separate `ePset_ProjectedCRS`
/// carrying the EPSG `Name`. The exact-match + missing-CRS bug dropped these
/// to the legacy IfcSite EPSG:4326 and showed the wrong CRS.
const IFC2X3_EPSET_LOWERCASE_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ifc-georeferencer pset fixture'),'2;1');
FILE_NAME('georef-lc.ifc','2026-06-26T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#1=IFCPROPERTYSINGLEVALUE('TargetCRS',$,IFCLABEL('EPSG:7415'),$);
#2=IFCPROPERTYSINGLEVALUE('Eastings',$,IFCLENGTHMEASURE(160073528.13858587),$);
#3=IFCPROPERTYSINGLEVALUE('Northings',$,IFCLENGTHMEASURE(384153306.2191765),$);
#4=IFCPROPERTYSINGLEVALUE('OrthogonalHeight',$,IFCLENGTHMEASURE(0.),$);
#5=IFCPROPERTYSET('2If4Y3Lpv6dgTDkC5x_dnr',$,'ePset_MapConversion',$,(#1,#2,#3,#4));
#6=IFCPROPERTYSINGLEVALUE('Name',$,IFCLABEL('EPSG:7415'),$);
#7=IFCPROPERTYSET('27AKTMp8j58fBEhvkJkcNJ',$,'ePset_ProjectedCRS',$,(#6));
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn extracts_ifc2x3_lowercase_epset_with_projected_crs_name() {
    let geo = extract_georeferencing(IFC2X3_EPSET_LOWERCASE_IFC)
        .expect("expected georeferencing from lowercase ePset_ sets");
    assert_eq!(geo.source.as_deref(), Some("ePSetMapConversion"));
    // CRS name surfaced from ePset_ProjectedCRS.Name (was previously lost).
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:7415"));
    assert!((geo.eastings - 160073528.13858587).abs() < 1e-3);
}

/// Without an ePset_ProjectedCRS set, the CRS name falls back to the
/// MapConversion's own `TargetCRS` label.
const IFC2X3_EPSET_TARGETCRS_ONLY_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ifc-georeferencer targetcrs-only fixture'),'2;1');
FILE_NAME('georef-tc.ifc','2026-06-26T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#1=IFCPROPERTYSINGLEVALUE('TargetCRS',$,IFCLABEL('EPSG:28992'),$);
#2=IFCPROPERTYSINGLEVALUE('Eastings',$,IFCLENGTHMEASURE(1000.5),$);
#3=IFCPROPERTYSINGLEVALUE('Northings',$,IFCLENGTHMEASURE(2000.25),$);
#4=IFCPROPERTYSINGLEVALUE('OrthogonalHeight',$,IFCLENGTHMEASURE(0.),$);
#5=IFCPROPERTYSET('2If4Y3Lpv6dgTDkC5x_dnr',$,'ePset_MapConversion',$,(#1,#2,#3,#4));
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn falls_back_to_target_crs_when_no_projected_crs_pset() {
    let geo = extract_georeferencing(IFC2X3_EPSET_TARGETCRS_ONLY_IFC)
        .expect("expected georeferencing from ePset_MapConversion");
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:28992"));
}

/// Millimetre MapUnit: the conversion offsets are authored in mm and the
/// served `map_unit_scale` must say 0.001 — the TS parser already did
/// this; the server previously ignored MapUnit entirely (alignment
/// audit). Values mirror packages/parser/test/georef-extractor.test.ts.
const MM_MAPUNIT_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef mm fixture'),'2;1');
FILE_NAME('georef-mm.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#7=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
#10=IFCPROJECTEDCRS('EPSG:25832',$,'ETRS89',$,'UTM','32N',#7);
#11=IFCMAPCONVERSION(#2,#10,512000000.,5400000000.,0.,1.,0.,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn resolves_millimetre_map_unit_scale() {
    let geo = extract_georeferencing(MM_MAPUNIT_IFC).expect("georef");
    assert_eq!(geo.map_unit.as_deref(), Some("MILLIMETRE"));
    assert_eq!(geo.map_unit_scale, Some(0.001));
    assert_eq!(geo.map_zone.as_deref(), Some("32N"));
}

/// Foot MapUnit, written exactly the way ifc-lite's own exporter writes it
/// (packages/export/src/step-georeferencing.ts): an `IfcConversionBasedUnit`
/// naming FOOT with an `IfcMeasureWithUnit` conversion factor.
///
/// `MapUnit` is an `IfcNamedUnit`, so it is EITHER an `IfcSIUnit` or an
/// `IfcConversionBasedUnit` — and attribute 2 is `Prefix` on the first but
/// `Name` on the second. Reading slot 2 as a prefix unconditionally meant
/// 'FOOT' matched no prefix and the unit read back as metres at scale 1: a
/// 3.28x error on every coordinate, silently. No fixture had ever authored a
/// non-metre MapUnit here or in the TS twin. Mirrors
/// packages/parser/test/georef-extractor.test.ts.
const FOOT_MAPUNIT_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef foot fixture'),'2;1');
FILE_NAME('georef-foot.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#6=IFCDIMENSIONALEXPONENTS(1,0,0,0,0,0,0);
#7=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
#8=IFCMEASUREWITHUNIT(IFCLENGTHMEASURE(0.3048),#7);
#9=IFCCONVERSIONBASEDUNIT(#6,.LENGTHUNIT.,'FOOT',#8);
#10=IFCPROJECTEDCRS('EPSG:2264',$,'NAD83',$,'LCC','3200',#9);
#11=IFCMAPCONVERSION(#2,#10,2000000.,700000.,0.,1.,0.,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn resolves_conversion_based_foot_map_unit_scale() {
    let geo = extract_georeferencing(FOOT_MAPUNIT_IFC).expect("georef");
    assert_eq!(geo.map_unit.as_deref(), Some("FOOT"));
    assert_eq!(geo.map_unit_scale, Some(0.3048));
}

/// The US survey foot is 1200/3937 m, not 0.3048 — 2 ppm apart, which is
/// metres of drift across a State Plane coordinate, precisely where survey
/// feet are used. The exporter writes this name too.
const SURVEY_FOOT_MAPUNIT_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef survey foot fixture'),'2;1');
FILE_NAME('georef-usft.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#6=IFCDIMENSIONALEXPONENTS(1,0,0,0,0,0,0);
#7=IFCSIUNIT(*,.LENGTHUNIT.,$,.METRE.);
#8=IFCMEASUREWITHUNIT(IFCLENGTHMEASURE(0.30480060960121924),#7);
#9=IFCCONVERSIONBASEDUNIT(#6,.LENGTHUNIT.,'US SURVEY FOOT',#8);
#10=IFCPROJECTEDCRS('EPSG:2264',$,'NAD83',$,'LCC','3200',#9);
#11=IFCMAPCONVERSION(#2,#10,2000000.,700000.,0.,1.,0.,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn distinguishes_us_survey_foot_from_international_foot_map_unit() {
    let geo = extract_georeferencing(SURVEY_FOOT_MAPUNIT_IFC).expect("georef");
    assert_eq!(geo.map_unit.as_deref(), Some("US SURVEY FOOT"));
    let scale = geo.map_unit_scale.expect("map unit scale");
    assert!(
        (scale - 1200.0 / 3937.0).abs() < 1e-12,
        "expected the survey foot ratio, got {scale}"
    );
    assert!(
        (scale - 0.3048).abs() > 1e-9,
        "survey foot must not collapse onto the international foot"
    );
}

/// A vendor unit name the table does not know must still scale from the
/// file's own declared factor — and the declared value is expressed IN the
/// measure's unit component, so a prefixed SI component multiplies it.
const VENDOR_MAPUNIT_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef vendor unit fixture'),'2;1');
FILE_NAME('georef-vendor.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#6=IFCDIMENSIONALEXPONENTS(1,0,0,0,0,0,0);
#7=IFCSIUNIT(*,.LENGTHUNIT.,.MILLI.,.METRE.);
#8=IFCMEASUREWITHUNIT(IFCLENGTHMEASURE(25.4),#7);
#9=IFCCONVERSIONBASEDUNIT(#6,.LENGTHUNIT.,'VENDOR UNIT',#8);
#10=IFCPROJECTEDCRS('EPSG:1234',$,$,$,$,$,#9);
#11=IFCMAPCONVERSION(#2,#10,0.,0.,0.,1.,0.,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn falls_back_to_declared_conversion_factor_for_unknown_map_unit_name() {
    let geo = extract_georeferencing(VENDOR_MAPUNIT_IFC).expect("georef");
    assert_eq!(geo.map_unit.as_deref(), Some("VENDOR UNIT"));
    let scale = geo.map_unit_scale.expect("map unit scale");
    assert!(
        (scale - 0.0254).abs() < 1e-12,
        "25.4 mm is 0.0254 m; the component prefix must be applied, got {scale}"
    );
}

/// An empty `ePset_ProjectedCRS.Name` must not block the `TargetCRS`
/// fallback — otherwise `crs_name` stays "" and the viewer gate (which
/// requires a truthy name) silently drops the model to EPSG:4326.
const IFC2X3_EPSET_EMPTY_CRS_NAME_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ifc-georeferencer empty-crs-name fixture'),'2;1');
FILE_NAME('georef-empty.ifc','2026-06-26T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#1=IFCPROPERTYSINGLEVALUE('TargetCRS',$,IFCLABEL('EPSG:28992'),$);
#2=IFCPROPERTYSINGLEVALUE('Eastings',$,IFCLENGTHMEASURE(1000.5),$);
#3=IFCPROPERTYSINGLEVALUE('Northings',$,IFCLENGTHMEASURE(2000.25),$);
#4=IFCPROPERTYSINGLEVALUE('OrthogonalHeight',$,IFCLENGTHMEASURE(0.),$);
#5=IFCPROPERTYSET('2If4Y3Lpv6dgTDkC5x_dnr',$,'ePset_MapConversion',$,(#1,#2,#3,#4));
#6=IFCPROPERTYSINGLEVALUE('Name',$,IFCLABEL(''),$);
#7=IFCPROPERTYSET('27AKTMp8j58fBEhvkJkcNJ',$,'ePset_ProjectedCRS',$,(#6));
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn empty_projected_crs_name_falls_back_to_target_crs() {
    let geo = extract_georeferencing(IFC2X3_EPSET_EMPTY_CRS_NAME_IFC)
        .expect("expected georeferencing from ePset_MapConversion");
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:28992"));
}

/// An explicit ePSet `MapUnit` label resolves to the matching metre scale,
/// parity with the native IfcProjectedCRS path (which reads it from the
/// unit entity). Direct consumers must not default these offsets to metres.
const IFC2X3_EPSET_FOOT_MAPUNIT_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('ifc-georeferencer foot-mapunit fixture'),'2;1');
FILE_NAME('georef-foot.ifc','2026-06-26T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#2=IFCPROPERTYSINGLEVALUE('Eastings',$,IFCLENGTHMEASURE(1000.5),$);
#3=IFCPROPERTYSINGLEVALUE('Northings',$,IFCLENGTHMEASURE(2000.25),$);
#4=IFCPROPERTYSINGLEVALUE('OrthogonalHeight',$,IFCLENGTHMEASURE(0.),$);
#5=IFCPROPERTYSET('2If4Y3Lpv6dgTDkC5x_dnr',$,'ePset_MapConversion',$,(#2,#3,#4));
#6=IFCPROPERTYSINGLEVALUE('Name',$,IFCLABEL('EPSG:2225'),$);
#8=IFCPROPERTYSINGLEVALUE('MapUnit',$,IFCLABEL('FOOT'),$);
#7=IFCPROPERTYSET('27AKTMp8j58fBEhvkJkcNJ',$,'ePset_ProjectedCRS',$,(#6,#8));
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn epset_map_unit_label_resolves_scale() {
    let geo = extract_georeferencing(IFC2X3_EPSET_FOOT_MAPUNIT_IFC).expect("georef");
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:2225"));
    assert_eq!(geo.map_unit.as_deref(), Some("FOOT"));
    assert_eq!(geo.map_unit_scale, Some(0.3048));
}

/// Two authored IfcMapConversions: the FIRST one wins, matching the TS
/// parser's `mapConversionIds[0]` pick (the server used to serve the
/// LAST one — alignment audit).
const TWO_CONVERSIONS_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef two-conversions fixture'),'2;1');
FILE_NAME('georef-two.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#10=IFCPROJECTEDCRS('EPSG:32632',$,'WGS84',$,'UTM','32N',$);
#11=IFCMAPCONVERSION(#2,#10,111.0,222.0,0.,1.,0.,1.0);
#12=IFCMAPCONVERSION(#2,#10,999.0,888.0,0.,1.,0.,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn first_map_conversion_wins() {
    let geo = extract_georeferencing(TWO_CONVERSIONS_IFC).expect("georef");
    assert!((geo.eastings - 111.0).abs() < 1e-9);
    assert!((geo.northings - 222.0).abs() < 1e-9);
}

/// Non-unit XAxisAbscissa/Ordinate (a DIRECTION, not cos/sin): the
/// rotation and the transform matrix must agree with each other and
/// with the TS parser's atan2-normalised matrix. Pre-fix, the matrix
/// used the raw components as cos/sin and disagreed with
/// `rotation_degrees` inside the same payload (alignment audit).
const NON_UNIT_AXIS_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef non-unit-axis fixture'),'2;1');
FILE_NAME('georef-axis.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#2=IFCGEOMETRICREPRESENTATIONCONTEXT($,'Model',3,1.0E-5,#5,$);
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#10=IFCPROJECTEDCRS('EPSG:32632',$,'WGS84',$,'UTM','32N',$);
#11=IFCMAPCONVERSION(#2,#10,1000.,2000.,0.,3.0,4.0,1.0);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn non_unit_axis_is_normalised() {
    let geo = extract_georeferencing(NON_UNIT_AXIS_IFC).expect("georef");
    // (3,4) direction → unit (0.6, 0.8); rotation ≈ 53.130°.
    assert!((geo.x_axis_abscissa - 0.6).abs() < 1e-9);
    assert!((geo.x_axis_ordinate - 0.8).abs() < 1e-9);
    assert!((geo.rotation_degrees - 53.13010235415598).abs() < 1e-9);
    // Matrix rotation cell == cos(rotation) — self-consistent payload.
    assert!((geo.transform_matrix[0] - 0.6).abs() < 1e-9);
    assert!((geo.transform_matrix[1] - 0.8).abs() < 1e-9);
}

/// Site-only model: `IfcSite.RefLatitude/RefLongitude` must produce a
/// georeference exactly like the TS parser's legacy-site fallback —
/// previously the server reported NO georeferencing for these models
/// while the browser said `hasGeoreference: true` (alignment audit).
/// Mirrors the values in packages/parser/test/georef-extractor.test.ts.
const SITE_ONLY_IFC: &str = r#"ISO-10303-21;
HEADER;
FILE_DESCRIPTION(('georef site-only fixture'),'2;1');
FILE_NAME('georef-site.ifc','2026-06-12T00:00:00',(''),(''),'','','');
FILE_SCHEMA(('IFC2X3'));
ENDSEC;
DATA;
#4=IFCCARTESIANPOINT((0.,0.,0.));
#5=IFCAXIS2PLACEMENT3D(#4,$,$);
#11=IFCLOCALPLACEMENT($,#5);
#10=IFCSITE('0Site0000000000000001',$,'Site',$,$,#11,$,$,.ELEMENT.,(47,22,30,0),(8,32,15,0),420.5,$,$);
ENDSEC;
END-ISO-10303-21;
"#;

#[test]
fn site_lat_long_fallback_matches_ts_parser() {
    let geo = extract_georeferencing(SITE_ONLY_IFC).expect("site georef");
    assert_eq!(geo.source.as_deref(), Some("siteLocation"));
    assert_eq!(geo.crs_name.as_deref(), Some("EPSG:4326"));
    assert_eq!(geo.geodetic_datum.as_deref(), Some("WGS84"));
    assert_eq!(geo.map_unit.as_deref(), Some("DEGREE"));
    // 47°22'30" → 47.375; 8°32'15" → 8.5375 (longitude in eastings,
    // latitude in northings — same packing as the TS fallback).
    assert!((geo.northings - 47.375).abs() < 1e-9, "lat {}", geo.northings);
    assert!((geo.eastings - 8.5375).abs() < 1e-9, "long {}", geo.eastings);
    assert!((geo.orthogonal_height - 420.5).abs() < 1e-9);
}

#[test]
fn returns_none_without_georeferencing() {
    let plain = r#"ISO-10303-21;
HEADER;
FILE_SCHEMA(('IFC4'));
ENDSEC;
DATA;
#1=IFCPROJECT('0$ScRe4drECQ4DMSqUjd6d',$,'P',$,$,$,$,$,$);
ENDSEC;
END-ISO-10303-21;
"#;
    assert!(extract_georeferencing(plain).is_none());
}

/// The wrapper and the index-taking variant are one implementation, so they have
/// to agree on every input. This is what lets a caller hand in an index it
/// already holds without having to think about it.
#[test]
fn the_index_taking_variant_agrees_with_the_wrapper() {
    for content in [
        GEOREF_IFC.as_bytes(),
        SITE_ONLY_IFC.as_bytes(),
        MM_MAPUNIT_IFC.as_bytes(),
    ] {
        let index = Arc::new(ifc_lite_core::build_entity_index(content));
        assert_eq!(
            extract_georeferencing(content),
            extract_georeferencing_with_index(content, &index),
            "the wrapper and the index-taking variant disagreed",
        );
    }
}

/// The index passed in is the one consulted, rather than a fresh one built
/// inside. Handed an empty index, the references the extractor resolves by id
/// all miss, so a file that otherwise georeferences comes back `None`.
///
/// The assertion is about which index is used, not about how a wrong index is
/// reported. It exists because reintroducing an internal build would otherwise
/// be invisible: it costs a full extra scan and changes no output.
#[test]
fn the_passed_index_is_the_one_consulted() {
    let content = GEOREF_IFC.as_bytes();
    assert!(
        extract_georeferencing(content).is_some(),
        "the fixture has to georeference, or the assertion below proves nothing",
    );

    let empty = Arc::new(EntityIndex::default());
    assert!(
        extract_georeferencing_with_index(content, &empty).is_none(),
        "an empty index was ignored, so the function built one of its own",
    );
}