start of BitWrite derive macro

bitbuffer_derive/tests/write_test.rs

@@ -0,0 +1,39 @@
+#![allow(dead_code)]
+#![allow(unreachable_patterns)]
+
+use bitbuffer::{
+    bit_size_of, bit_size_of_sized, BigEndian, BitReadBuffer, BitReadStream, BitWrite, Endianness,
+    LittleEndian,
+};
+
+#[derive(BitWrite)]
+struct TestStruct {
+    foo: u8,
+    str: String,
+    #[size = 2]
+    truncated: String,
+    bar: u16,
+    float: f32,
+    #[size = 3]
+    asd: u8,
+    #[size = "asd"]
+    previous_field: u8,
+}
+
+#[derive(BitWrite)]
+#[discriminant_bits = 2]
+enum TestBareEnum {
+    Foo,
+    Bar,
+    Asd = 3,
+}
+
+#[derive(BitWrite)]
+#[discriminant_bits = 2]
+enum TestUnnamedFieldEnum {
+    #[size = 5]
+    Foo(i8),
+    Bar(bool),
+    #[discriminant = 3]
+    Asd(u8),
+}