Added permittivity

test/unit_test/runtime/fmt_units_test.cpp

@@ -287,6 +287,11 @@ TEST_CASE("fmt::format on synthesized unit symbols", "[text][fmt]")
     CHECK(fmt::format("{:%Q %Aq}", 1q_C_per_m2) == "1 C/m^2");
   }
 
+  SECTION("permittivity")
+  {
+    CHECK(fmt::format("{}", 1q_F_per_m) == "1 F/m");
+  }
+
   SECTION("incoherent units with powers")
   {
     CHECK(fmt::format("{}", 1q_mi * 1q_mi * 1q_mi) == "1 [15900351812136/3814697265625 × 10⁹] m³");