add tests and swap to github actions

.github/workflows/rust.yml

@@ -0,0 +1,33 @@
+name: svg2gcode
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build
+        run: cargo build
+      - name: Run cargo-tarpaulin
+        uses: actions-rs/tarpaulin@v0.1
+        with:
+          version: '0.14.2'
+          args: '-- --nocapture --test-threads 1'
+      - name: Upload to codecov.io
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{secrets.CODECOV_TOKEN}}
+
+      - name: Archive code coverage results
+        uses: actions/upload-artifact@v1
+        with:
+          name: code-coverage-report
+          path: cobertura.xml

src/converter.rs

@@ -26,6 +26,16 @@ pub struct ProgramOptions {
     pub dpi: f64,
 }
 
+impl Default for ProgramOptions {
+    fn default() -> Self {
+        Self {
+            tolerance: 0.002,
+            feedrate: 300.0,
+            dpi: 96.0,
+        }
+    }
+}
+
 pub fn svg2program(doc: &Document, options: ProgramOptions, mach: Machine) -> Vec<Command> {
     let mut turtle = Turtle::new(mach);
 

src/machine.rs

@@ -23,7 +23,7 @@ pub enum Distance {
 
 /// Generic machine state simulation, assuming nothing is known about the machine when initialized.
 /// This is used to reduce output GCode verbosity and run repetitive actions.
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct Machine {
     tool_state: Option<Tool>,
     distance_mode: Option<Distance>,

src/main.rs

@@ -21,6 +21,9 @@ mod postprocess;
 /// This concept is referred to as [Turtle graphics](https://en.wikipedia.org/wiki/Turtle_graphics).
 mod turtle;
 
+use converter::ProgramOptions;
+use machine::Machine;
+
 fn main() -> io::Result<()> {
     if env::var("RUST_LOG").is_err() {
         env::set_var("RUST_LOG", "svg2gcode=info")
@@ -112,3 +115,24 @@ fn main() -> io::Result<()> {
         gcode::program2gcode(program, std::io::stdout())
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn square_produces_expected_gcode() {
+        let shapes = include_str!("../tests/square.svg");
+        let options = ProgramOptions::default();
+        let machine = Machine::default();
+        let document = roxmltree::Document::parse(&shapes).unwrap();
+
+        let program = converter::svg2program(&document, options, machine);
+        let mut actual = vec![];
+        assert!(gcode::program2gcode(program, &mut actual).is_ok());
+        assert_eq!(
+            String::from_utf8(actual).unwrap(),
+            include_str!("../tests/square.gcode")
+        )
+    }
+}

tests/square.svg

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="square.svg"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 10 10"
+   height="10mm"
+   width="10mm">
+  <defs
+     id="defs2" />
+  <sodipodi:namedview
+     inkscape:window-maximized="1"
+     inkscape:window-y="0"
+     inkscape:window-x="0"
+     inkscape:window-height="2109"
+     inkscape:window-width="3836"
+     units="mm"
+     showgrid="true"
+     inkscape:document-rotation="0"
+     inkscape:current-layer="layer1"
+     inkscape:document-units="mm"
+     inkscape:cy="35.055997"
+     inkscape:cx="21.930942"
+     inkscape:zoom="22.4"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0.0"
+     borderopacity="1.0"
+     bordercolor="#666666"
+     pagecolor="#ffffff"
+     id="base">
+    <inkscape:grid
+       spacingy="1"
+       spacingx="1"
+       units="mm"
+       id="grid836"
+       type="xygrid" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata5">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     id="layer1"
+     inkscape:groupmode="layer"
+     inkscape:label="Layer 1">
+    <path
+       id="path838"
+       d="M 1,1 H 9 V 9 H 1 Z"
+       style="fill:none;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
+  </g>
+</svg>