Test examples

Author: fornwall

.github/workflows/ci.yml

@@ -28,6 +28,27 @@ jobs:
         ./tests/scripts/test-runner.sh
         ./tests/scripts/test-runner.sh
 
+  test-examples:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        rust: ["1.64.0", "stable"]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout source
+      uses: actions/checkout@v3
+    - name: Setup rust
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        toolchain: ${{ matrix.rust }}
+    - name: Install just
+      uses: taiki-e/install-action@just
+    - name: Install rust-script
+      run: cargo install --path .
+    - name: Test examples
+      run: ./test-examples.sh
+      working-directory: examples
+
   check-format:
     runs-on: ubuntu-latest
     steps:

examples/justfile/Justfile

@@ -0,0 +1,11 @@
+demo:
+    #!/usr/bin/env rust-script --base-path {{justfile_directory()}}
+    //! ```cargo
+    //! [dependencies]
+    //! dummy = { path = "./dummy" }
+    //! ```
+    fn main() {
+       let result = dummy::add(1, 2);
+       println!("result: {}", result);
+    }
+

examples/justfile/dummy/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "dummy"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

examples/justfile/dummy/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

examples/test-examples.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+set -e -u
+
+assert_equals() {
+    if [ "$1" != "$2" ]; then
+      echo "Invalid output: Expected '$1', was '$2'"
+      exit 1
+    fi
+}
+
+assert_equals "result: 3" "$(just -f justfile/Justfile)"
+assert_equals "hello, rust" "$(./hello.ers)"
+assert_equals "hello, rust" "$(./hello-without-main.ers)"