Rust: Add macro expr type inference test

Author: hvitved

rust/ql/test/library-tests/type-inference/main.rs

@@ -1810,6 +1810,12 @@ mod indexers {
     }
 }
 
+mod macros {
+    pub fn f() {
+        let x = format!("Hello, {}", "World!"); // $ MISSING: type=x:String
+    }
+}
+
 fn main() {
     field_access::f();
     method_impl::f();
@@ -1832,4 +1838,5 @@ fn main() {
     async_::f();
     impl_trait::f();
     indexers::f();
+    macros::f();
 }

rust/ql/test/library-tests/type-inference/type-inference.expected

@@ -2642,9 +2642,13 @@ inferType
 | main.rs:1809:24:1809:25 | xs |  | file://:0:0:0:0 | [] |
 | main.rs:1809:24:1809:25 | xs | [T;...] | main.rs:1764:5:1765:13 | S |
 | main.rs:1809:24:1809:25 | xs | [T] | main.rs:1764:5:1765:13 | S |
-| main.rs:1815:5:1815:20 | ...::f(...) |  | main.rs:67:5:67:21 | Foo |
-| main.rs:1816:5:1816:60 | ...::g(...) |  | main.rs:67:5:67:21 | Foo |
-| main.rs:1816:20:1816:38 | ...::Foo {...} |  | main.rs:67:5:67:21 | Foo |
-| main.rs:1816:41:1816:59 | ...::Foo {...} |  | main.rs:67:5:67:21 | Foo |
-| main.rs:1832:5:1832:15 | ...::f(...) |  | {EXTERNAL LOCATION} | trait Future |
+| main.rs:1815:25:1815:35 | "Hello, {}" |  | {EXTERNAL LOCATION} | str |
+| main.rs:1815:25:1815:45 | ...::format(...) |  | {EXTERNAL LOCATION} | String |
+| main.rs:1815:25:1815:45 | { ... } |  | {EXTERNAL LOCATION} | String |
+| main.rs:1815:38:1815:45 | "World!" |  | {EXTERNAL LOCATION} | str |
+| main.rs:1821:5:1821:20 | ...::f(...) |  | main.rs:67:5:67:21 | Foo |
+| main.rs:1822:5:1822:60 | ...::g(...) |  | main.rs:67:5:67:21 | Foo |
+| main.rs:1822:20:1822:38 | ...::Foo {...} |  | main.rs:67:5:67:21 | Foo |
+| main.rs:1822:41:1822:59 | ...::Foo {...} |  | main.rs:67:5:67:21 | Foo |
+| main.rs:1838:5:1838:15 | ...::f(...) |  | {EXTERNAL LOCATION} | trait Future |
 testFailures