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authorGriffin Smith <root@gws.fyi>2022-09-17T18·14-0400
committerclbot <clbot@tvl.fyi>2022-09-18T17·55+0000
commitf8b380672043e9b870c4303ce47205a1435de8ee (patch)
tree6132b8ccbf869634ff7e4ec7dca9667c3e495520 /tvix/eval/src/value/list.rs
parent221d3b9485a1d84fc4d9f06d864242d3c393d0ba (diff)
test(tvix/eval): impl Arbitrary for Value r/4902
Impl Arbitrary for Value (and NixAttrs and NixList) in the same way we
did for NixString. Value currently only generates non-"internal"
values (no thunks, AttrNotFound, etc.) and can't generate
functions (builtins or closures), because those'd require full
generation of tvix bytecode, which is a bit more work than I'd like to
do now - there's a `todo!` left in the code for a place where we could
allow opting-in to internal values and functions later.

Change-Id: I07a59e2b1d89cfaa912d4ecebd642caf4ddb040a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6627
Autosubmit: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Diffstat (limited to 'tvix/eval/src/value/list.rs')
-rw-r--r--tvix/eval/src/value/list.rs19
1 files changed, 19 insertions, 0 deletions
diff --git a/tvix/eval/src/value/list.rs b/tvix/eval/src/value/list.rs
index c00ddd4191ea..19415c0d557f 100644
--- a/tvix/eval/src/value/list.rs
+++ b/tvix/eval/src/value/list.rs
@@ -20,6 +20,25 @@ impl Display for NixList {
     }
 }
 
+#[cfg(feature = "arbitrary")]
+mod arbitrary {
+    use proptest::{
+        prelude::{any_with, Arbitrary},
+        strategy::{BoxedStrategy, Strategy},
+    };
+
+    use super::*;
+
+    impl Arbitrary for NixList {
+        type Parameters = <Vec<Value> as Arbitrary>::Parameters;
+        type Strategy = BoxedStrategy<Self>;
+
+        fn arbitrary_with(args: Self::Parameters) -> Self::Strategy {
+            any_with::<Vec<Value>>(args).prop_map(Self).boxed()
+        }
+    }
+}
+
 impl NixList {
     pub fn concat(&self, other: &Self) -> Self {
         let mut lhs = self.clone();