add complement wrapper xtask script

xtask/src/complement.rs

@@ -0,0 +1,32 @@
+use std::path::PathBuf;
+
+use miette::{IntoDiagnostic, Result, WrapErr};
+use xshell::{cmd, Shell};
+
+mod docker;
+mod test2json;
+
+use self::{docker::load_docker_image, test2json::run_complement};
+
+#[derive(clap::Args)]
+pub(crate) struct Args;
+
+#[allow(clippy::needless_pass_by_value)]
+pub(crate) fn main(_args: Args) -> Result<()> {
+    let sh = Shell::new().unwrap();
+    let toplevel = get_toplevel_path(&sh)
+        .wrap_err("failed to determine repository root directory")?;
+    let docker_image = load_docker_image(&sh, &toplevel).wrap_err(
+        "failed to build and load complement-grapevine docker image",
+    )?;
+    run_complement(&sh, &docker_image)
+        .wrap_err("failed to run complement tests")?;
+    Ok(())
+}
+
+/// Returns the path to the repository root
+fn get_toplevel_path(sh: &Shell) -> Result<PathBuf> {
+    let path =
+        cmd!(sh, "git rev-parse --show-toplevel").read().into_diagnostic()?;
+    Ok(path.into())
+}