[meta] initialize repository

.github/workflows/ci.yml

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+name: Tests
+
+on: [ push, pull_request  ]
+
+env:
+  CARGO_ENV_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build
+        run: cargo build --verbose
+      - name: Run tests
+        run: cargo test --verbose
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "violetta"
+version = "0.1.0"

Cargo.toml

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

src/main.rs

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+mod test;
+
+#[allow(dead_code)]
+fn greet_user( user: &str ) -> String {
+    format!( "Hello, {user}!" )
+}
+
+fn main() {
+    println!("Hello, world!");
+}

src/test.rs

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+#[cfg(test)]
+mod test {
+    use crate::*;
+
+    #[test]
+    fn does_it_greet_us( ) {
+        assert_eq!( greet_user( "John" ), "Hello, John!" );
+    }
+}