Add trybuild tests to test error message reported when matrix dims mismatch

nalgebra-macros/Cargo.toml

@@ -17,3 +17,4 @@ proc-macro2 = "1.0"
 
 [dev-dependencies]
 nalgebra = { version = "0.26.1", path = ".." }
+trybuild = "1.0.42"

nalgebra-macros/tests/tests.rs

@@ -114,4 +114,20 @@ fn dvector_small_dims_exhaustive() {
     assert_eq_and_type!(dvector![1, 2, 3, 4], DVector::from_column_slice(&[1, 2, 3, 4]));
     assert_eq_and_type!(dvector![1, 2, 3, 4, 5], DVector::from_column_slice(&[1, 2, 3, 4, 5]));
     assert_eq_and_type!(dvector![1, 2, 3, 4, 5, 6], DVector::from_column_slice(&[1, 2, 3, 4, 5, 6]));
+}
+
+#[test]
+fn matrix_trybuild_tests() {
+    let t = trybuild::TestCases::new();
+
+    // Verify error message when we give a matrix with mismatched dimensions
+    t.compile_fail("tests/trybuild/matrix_mismatched_dimensions.rs");
+}
+
+#[test]
+fn dmatrix_trybuild_tests() {
+    let t = trybuild::TestCases::new();
+
+    // Verify error message when we give a matrix with mismatched dimensions
+    t.compile_fail("tests/trybuild/dmatrix_mismatched_dimensions.rs");
 }

nalgebra-macros/tests/trybuild/dmatrix_mismatched_dimensions.rs

@@ -0,0 +1,6 @@
+use nalgebra_macros::dmatrix;
+
+fn main() {
+    dmatrix![1, 2, 3;
+            4, 5];
+}

nalgebra-macros/tests/trybuild/dmatrix_mismatched_dimensions.stderr

@@ -0,0 +1,5 @@
+error: Unexpected number of entries in row 1. Expected 3, found 2 entries.
+ --> $DIR/dmatrix_mismatched_dimensions.rs:5:13
+  |
+5 |             4, 5];
+  |             ^

nalgebra-macros/tests/trybuild/matrix_mismatched_dimensions.rs

@@ -0,0 +1,6 @@
+use nalgebra_macros::matrix;
+
+fn main() {
+    matrix![1, 2, 3;
+            4, 5];
+}

nalgebra-macros/tests/trybuild/matrix_mismatched_dimensions.stderr

@@ -0,0 +1,5 @@
+error: Unexpected number of entries in row 1. Expected 3, found 2 entries.
+ --> $DIR/matrix_mismatched_dimensions.rs:5:13
+  |
+5 |             4, 5];
+  |             ^