feat: export llvm test utilities under llvm-test feature (#1677)

Closes #1673

Author: ss2165

.github/workflows/ci-rs.yml

@@ -242,7 +242,7 @@ jobs:
 
   tests-stable-llvm:
     needs: changes
-    if: ${{ ( needs.changes.outputs.llvm == 'true' && github.event_name == 'push' ) || needs.changes.outputs.override == 'true' }}  
+    if: ${{ ( needs.changes.outputs.llvm == 'true' && github.event_name == 'push' ) || needs.changes.outputs.override == 'true' }}
     runs-on: ubuntu-latest
     name: tests hugr-llvm
     strategy:

hugr-llvm/Cargo.toml

@@ -16,12 +16,23 @@ keywords = ["Quantum", "Quantinuum"]
 categories = ["compilers"]
 
 [features]
+test-utils = [
+    "insta",
+    "rstest",
+    "portgraph",
+    "pathsearch",
+    "serde_json",
+    "serde",
+    "typetag",
+]
+
 default = ["llvm14-0"]
 llvm14-0 = ["inkwell/llvm14-0"]
 
+
 [dependencies]
 inkwell = { version = "0.4.0", default-features = false }
-hugr-core = { path = "../hugr-core", version = "0.13.3"}
+hugr-core = { path = "../hugr-core", version = "0.13.3" }
 anyhow = "1.0.83"
 itertools.workspace = true
 delegate.workspace = true
@@ -30,11 +41,13 @@ lazy_static.workspace = true
 downcast-rs.workspace = true
 strum.workspace = true
 
+insta = { workspace = true, optional = true }
+rstest = { workspace = true, optional = true }
+portgraph = { workspace = true, optional = true }
+pathsearch = { workspace = true, optional = true }
+serde_json = { workspace = true, optional = true }
+serde = { workspace = true, optional = true }
+typetag = { workspace = true, optional = true }
+
 [dev-dependencies]
-insta.workspace = true
-rstest.workspace = true
-portgraph.workspace = true
-pathsearch.workspace = true
-serde_json.workspace = true
-serde.workspace = true
-typetag.workspace = true
+hugr-llvm = {"path" = ".", features = ["test-utils"]}

hugr-llvm/src/emit.rs

@@ -403,5 +403,5 @@ pub fn get_intrinsic<'c>(
         ))
 }
 
-#[cfg(test)]
+#[cfg(any(test, feature = "test-utils"))]
 pub mod test;