Rust: Add cross-crate path resolution test

rust/ql/integration-tests/hello-workspace/exe/src/main.rs

@@ -1,7 +1,7 @@
-use lib::a_module::hello;
+use lib::a_module::hello; // $ MISSING: item=HELLO
 
 mod a_module;
 
 fn main() {
-    hello();
+    hello(); // $ MISSING: item=HELLO
 }

rust/ql/integration-tests/hello-workspace/lib/src/a_module/mod.rs

@@ -1,3 +1,3 @@
 pub fn hello() {
     println!("Hello, world!");
-}
+} // HELLO

rust/ql/integration-tests/hello-workspace/path-resolution.ql

@@ -0,0 +1 @@
+import utils.test.PathResolutionInlineExpectationsTest

rust/ql/integration-tests/hello-workspace/rust-project.json

@@ -2,14 +2,23 @@
   "sysroot_src": "filled by the rust_project fixture",
   "crates": [
     {
+      "display_name": "exe",
+      "version": "0.1.0",
       "root_module": "exe/src/main.rs",
       "edition": "2021",
-      "deps": [{"crate": 1, "name": "lib"}]
+      "deps": [
+        {
+          "crate": 1,
+          "name": "lib"
+        }
+      ]
     },
     {
+      "display_name": "lib",
+      "version": "0.1.0",
       "root_module": "lib/src/lib.rs",
       "edition": "2021",
       "deps": []
     }
   ]
-}
+}

rust/ql/integration-tests/hello-workspace/summary.cargo.expected

@@ -1,4 +1,4 @@
-| Elements extracted | 87 |
+| Elements extracted | 90 |
 | Elements unextracted | 0 |
 | Extraction errors | 0 |
 | Extraction warnings | 0 |

rust/ql/integration-tests/hello-workspace/summary.rust-project.expected

@@ -1,4 +1,4 @@
-| Elements extracted | 87 |
+| Elements extracted | 90 |
 | Elements unextracted | 0 |
 | Extraction errors | 0 |
 | Extraction warnings | 0 |

rust/ql/lib/utils/test/PathResolutionInlineExpectationsTest.qll

@@ -0,0 +1,48 @@
+/**
+ * Provides an inline expectations test for path resolution.
+ */
+
+private import rust
+private import codeql.rust.internal.PathResolution
+private import codeql.rust.internal.TypeInference
+private import utils.test.InlineExpectationsTest
+
+private module ResolveTest implements TestSig {
+  string getARelevantTag() { result = "item" }
+
+  private predicate itemAt(ItemNode i, string filepath, int line, boolean inMacro) {
+    i.getLocation().hasLocationInfo(filepath, _, _, line, _) and
+    if i.(AstNode).isInMacroExpansion() then inMacro = true else inMacro = false
+  }
+
+  private predicate commmentAt(string text, string filepath, int line) {
+    exists(Comment c |
+      c.getLocation().hasLocationInfo(filepath, line, _, _, _) and
+      c.getCommentText() = text
+    )
+  }
+
+  private predicate item(ItemNode i, string value) {
+    exists(string filepath, int line, boolean inMacro | itemAt(i, filepath, line, inMacro) |
+      commmentAt(value, filepath, line) and inMacro = false
+      or
+      not (commmentAt(_, filepath, line) and inMacro = false) and
+      value = i.getName()
+    )
+  }
+
+  predicate hasActualResult(Location location, string element, string tag, string value) {
+    exists(AstNode n |
+      not n = any(Path parent).getQualifier() and
+      location = n.getLocation() and
+      element = n.toString() and
+      tag = "item"
+    |
+      item(resolvePath(n), value)
+      or
+      item(n.(MethodCallExpr).getStaticTarget(), value)
+    )
+  }
+}
+
+import MakeTest<ResolveTest>

rust/ql/test/library-tests/path-resolution/path-resolution.ql

@@ -1,49 +1,8 @@
 import rust
 import codeql.rust.internal.PathResolution
-import codeql.rust.internal.TypeInference
-import utils.test.InlineExpectationsTest
+import utils.test.PathResolutionInlineExpectationsTest
 import TestUtils
 
 query predicate mod(Module m) { toBeTested(m) }
 
 query predicate resolvePath(Path p, ItemNode i) { toBeTested(p) and i = resolvePath(p) }
-
-module ResolveTest implements TestSig {
-  string getARelevantTag() { result = "item" }
-
-  private predicate itemAt(ItemNode i, string filepath, int line, boolean inMacro) {
-    i.getLocation().hasLocationInfo(filepath, _, _, line, _) and
-    if i.isInMacroExpansion() then inMacro = true else inMacro = false
-  }
-
-  private predicate commmentAt(string text, string filepath, int line) {
-    exists(Comment c |
-      c.getLocation().hasLocationInfo(filepath, line, _, _, _) and
-      c.getCommentText() = text
-    )
-  }
-
-  private predicate item(ItemNode i, string value) {
-    exists(string filepath, int line, boolean inMacro | itemAt(i, filepath, line, inMacro) |
-      commmentAt(value, filepath, line) and inMacro = false
-      or
-      not (commmentAt(_, filepath, line) and inMacro = false) and
-      value = i.getName()
-    )
-  }
-
-  predicate hasActualResult(Location location, string element, string tag, string value) {
-    exists(AstNode n |
-      not n = any(Path parent).getQualifier() and
-      location = n.getLocation() and
-      element = n.toString() and
-      tag = "item"
-    |
-      item(resolvePath(n), value)
-      or
-      item(n.(MethodCallExpr).getStaticTarget(), value)
-    )
-  }
-}
-
-import MakeTest<ResolveTest>