1 files changed, 59 insertions, 0 deletions
diff --git a/test/bitfield.cc b/test/bitfield.cc
new file mode 100644
index 0000000..77bb286
--- /dev/null
+++ b/test/bitfield.cc
@@ -0,0 +1,59 @@
+#include <bitfield.h>
+
+#include <cassert>
+#include <cstdio>
+
+BITFIELD_START(MOOSE, std::uint32_t)
+    FIELD(IO, 4, 7)
+    FIELD(EL, 16, 31)
+BITFIELD_END()
+
+int main() {
+  MOOSE mo(0xab);
+
+  auto io = mo.IO();
+  auto el = mo.EL();
+
+  assert(mo.val() == 0xab);
+  assert(io.val() == 0xa);
+  assert(el.val() == 0);
+
+  io = 0x0;
+  std::printf("reg %08x f %08x\n", mo.val(), io.val());
+  assert(mo.val() == 0x0b);
+  assert(io.val() == 0x0);
+  assert(el.val() == 0);
+
+  el = 0xfeef;
+  std::printf("reg %08x f %08x\n", mo.val(), el.val());
+  assert(mo.val() == 0xfeef000b);
+  assert(io.val() == 0x0);
+  assert(el.val() == 0xfeef);
+
+  mo = 0xcafeu;
+  assert(mo.val() == 0xcafe);
+  assert(io.val() == 0xf);
+  assert(el.val() == 0x0);
+
+  assert(mo.val() == 0xcafe);
+  mo |= 0xa00b0000;
+  assert(mo.val() == 0xa00bcafe);
+  assert(io.val() == 0xf);
+  assert(el.val() == 0xa00b);
+
+  assert(mo.val() == 0xa00bcafe);
+  mo &= 0xffff0000;
+  assert(mo.val() == 0xa00b0000);
+  assert(io.val() == 0x0);
+  assert(el.val() == 0xa00b);
+
+  el |= 0xc0;
+  assert(mo.val() == 0xa0cb0000);
+  assert(io.val() == 0x0);
+  assert(el.val() == 0xa0cb);
+
+  el &= 0xf000;
+  assert(mo.val() == 0xa0000000);
+  assert(io.val() == 0x0);
+  assert(el.val() == 0xa000);
+}