tests: add senvcfg unit tests

Adds basic unit tests for the `senvcfg` CSR.

Author: rmsyn

riscv/CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - CSR helper macro `write_composite_csr` for writing 64-bit CSRs on 32-bit targets.
 - Write utilities for `mcycle`, `minstret`
+- Add `senvcfg` CSR
 
 ## [v0.13.0] - 2025-02-18
 

riscv/src/register/senvcfg.rs

@@ -86,3 +86,35 @@ read_write_csr_field! {
     pmm,
     Pmm: [32:33],
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_senvcfg() {
+        let mut senvcfg = Senvcfg::from_bits(0);
+
+        test_csr_field!(senvcfg, fiom);
+        test_csr_field!(senvcfg, lpe);
+
+        #[cfg(not(target_arch = "riscv32"))]
+        test_csr_field!(senvcfg, sse);
+
+        [Cbie::IllegalInstruction, Cbie::Flush, Cbie::Invalidate]
+            .into_iter()
+            .for_each(|cbie| {
+                test_csr_field!(senvcfg, cbie: cbie);
+            });
+
+        test_csr_field!(senvcfg, cbcfe);
+        test_csr_field!(senvcfg, cbze);
+
+        #[cfg(not(target_arch = "riscv32"))]
+        [Pmm::Disabled, Pmm::Mask7bit, Pmm::Mask16bit]
+            .into_iter()
+            .for_each(|pmm| {
+                test_csr_field!(senvcfg, pmm: pmm);
+            });
+    }
+}