[DEV-7504] Add GraphML generation

We want to be able to build a representation of the dependency graph so
we can easily inspect it.

We do not want to make GraphML by default. It is better to use a tool.
We use "petgraph-graphml".

1 files changed, 13 insertions, 0 deletions

diff --git a/tamer/tests/tameld.rs b/tamer/tests/tameld.rs
index 30b2fea..1bbad58 100644
--- a/tamer/tests/tameld.rs
+++ b/tamer/tests/tameld.rs
@@ -68,6 +68,19 @@ fn link_input_file_does_not_exist() -> Result<(), Box<dyn std::error::Error>> {
 }
 
 #[test]
+fn link_invalid_emit() -> Result<(), Box<dyn std::error::Error>> {
+    let mut cmd = Command::cargo_bin("tameld")?;
+    cmd.arg("foobar");
+    cmd.arg("--emit").arg("notgood");
+    cmd.arg("-o").arg("tests/data/test-output.xmle");
+    cmd.assert()
+        .failure()
+        .stderr(predicate::str::contains("--emit notgood"));
+
+    Ok(())
+}
+
+#[test]
 fn link_empty_input_file() -> Result<(), Box<dyn std::error::Error>> {
     let mut cmd = Command::cargo_bin("tameld")?;
     cmd.arg("tests/data/empty.xmlo");