Grcov report - primitive

1

//! Tests for geometries of SVG primitives

2

//!

3

//! These use the *.svg and *.svg.geom files in the tests/fixtures/primitive_geometries directory.

4

//!

5

//! Each .svg.geom is a JSON file formatted like this:

6

//!

7

//! ```json

8

//! {

9

//!     "#element_id": {

10

//!         "ink_rect": {

11

//!             "x": 5.0,

12

//!             "y": 15.0,

13

//!             "width": 40.0,

14

//!             "height": 50.0

15

//!         },

16

//!         "logical_rect": {

17

//!             "x": 10.0,

18

//!             "y": 20.0,

19

//!             "width": 30.0,

20

//!             "height": 40.0

21

//!         }

22

//!     }

23

//! }

24

//! ```

25

//!

26

//! Any number of element_ids may appear in the file.  For each of those, the `test()` function will

27

//! call `CairoRenderer::get_layer_geometry()` and compare its result against the provided rectangles.

28

29

use anyhow::{Context, Result};

30

31

use rsvg::tests_only::Rect;

32

use rsvg::{CairoRenderer, LengthUnit, Loader};

33

use serde::Deserialize;

34

use std::collections::BTreeMap;

35

use std::fs;

36

37

// Copy of cairo::Rectangle

38

//

39

// Somehow I can't make serde's "remote" work here, in combination with the BTreeMap below...

40

112

#[derive(Copy, Clone, Deserialize, Debug, PartialEq)]

41

struct Rectangle {

42

    x: f64,

43

    y: f64,

44

    width: f64,

45

    height: f64,

46

47

48

impl From<Rectangle> for Rect {

49

8

    fn from(r: Rectangle) -> Rect {

50

8

        Rect {

51

8

            x0: r.x,

52

8

            y0: r.y,

53

8

            x1: r.x + r.width,

54

8

            y1: r.y + r.height,

55

56

8

57

58

59

29

#[derive(Copy, Clone, Deserialize, Debug, PartialEq)]

60

struct ElementGeometry {

61

    ink_rect: Option<Rectangle>,

62

    logical_rect: Option<Rectangle>,

63

64

65

8

#[derive(Deserialize)]

66

struct Geometries(BTreeMap<String, ElementGeometry>);

67

68

4

fn read_geometries(path: &str) -> Result<Geometries> {

69

4

    let contents = fs::read_to_string(path).context(format!("could not read {:?}", path))?;

70

4

    serde_json::from_str(&contents).context(format!("could not parse JSON from {:?}", path))

71

4

72

73

// We create a struct with the id and geometry so that

74

// assert_eq!() in the tests will print out the element name for failures.

75

//

76

// Here we use rsvg::Rect as that one has an approx_eq() method.

77

8

#[derive(Debug, PartialEq)]

78

struct Element {

79

4

    id: String,

80

4

    ink_rect: Option<Rect>,

81

4

    logical_rect: Option<Rect>,

82

83

84

impl Element {

85

4

    fn from_element_geometry(id: &str, geom: &ElementGeometry) -> Element {

86

4

        Element {

87

4

            id: String::from(id),

88

4

            ink_rect: geom.ink_rect.map(Into::into),

89

4

            logical_rect: geom.logical_rect.map(Into::into),

90

91

4

92

93

4

    fn from_rectangles(

94

        id: &str,

95

        ink_rect: cairo::Rectangle,

96

        logical_rect: cairo::Rectangle,

97

    ) -> Element {

98

4

        Element {

99

4

            id: String::from(id),

100

4

            ink_rect: Some(ink_rect.into()),

101

4

            logical_rect: Some(logical_rect.into()),

102

103

4

104

105

106

4

fn test(svg_filename: &str, geometries_filename: &str) {

107

4

    let geometries = read_geometries(geometries_filename).expect("reading geometries JSON");

108

109

4

    let handle = Loader::new()

110

        .read_path(svg_filename)

111

        .expect("reading geometries SVG");

112

12

    let renderer = CairoRenderer::new(&handle);

113

12

    let dimensions = renderer.intrinsic_dimensions();

114

4

    let (svg_width, svg_height) = renderer

115

        .intrinsic_size_in_pixels()

116

        .expect("intrinsic size in pixels");

117

118

4

    assert!(matches!(dimensions.width.unit, LengthUnit::Px));

119

4

    assert!(matches!(dimensions.height.unit, LengthUnit::Px));

120

4

    assert_eq!(dimensions.width.length, svg_width);

121

4

    assert_eq!(dimensions.height.length, svg_height);

122

123

4

    for (id, expected) in geometries.0.iter() {

124

4

        let expected = Element::from_element_geometry(id, expected);

125

126

4

        let viewport = cairo::Rectangle::new(0.0, 0.0, svg_width, svg_height);

127

128

4

        let (ink_rect, logical_rect) = renderer

129

4

            .geometry_for_layer(Some(id), &viewport)

130

4

            .unwrap_or_else(|_| panic!("getting geometry for {}", id));

131

132

4

        let computed = Element::from_rectangles(id, ink_rect, logical_rect);

133

134

4

        assert_eq!(expected, computed);

135

4

136

4

137

138

#[test]

139

2

fn rect() {

140

1

    test(

141

        "tests/fixtures/primitive_geometries/rect.svg",

142

        "tests/fixtures/primitive_geometries/rect.svg.geom",

143

);

144

2

145

146

#[test]

147

2

fn rect_stroke() {

148

1

    test(

149

        "tests/fixtures/primitive_geometries/rect_stroke.svg",

150

        "tests/fixtures/primitive_geometries/rect_stroke.svg.geom",

151

);

152

2

153

154

#[test]

155

2

fn rect_stroke_unfilled() {

156

1

    test(

157

        "tests/fixtures/primitive_geometries/rect_stroke_unfilled.svg",

158

        "tests/fixtures/primitive_geometries/rect_stroke_unfilled.svg.geom",

159

);

160

2

161

162

#[test]

163

2

fn rect_isolate() {

164

1

    test(

165

        "tests/fixtures/primitive_geometries/rect_isolate.svg",

166

        "tests/fixtures/primitive_geometries/rect_isolate.svg.geom",

167

);

168

2