moved all crates into seperate folder + related path fixes

crates/compiler/builtins/bitcode/tests/bitcode_test.rs

@@ -0,0 +1,64 @@
+#[macro_use]
+extern crate pretty_assertions;
+
+#[cfg(test)]
+mod bitcode {
+    use roc_builtins_bitcode::{count_segments_, str_split_};
+
+    #[test]
+    fn count_segments() {
+        assert_eq!(
+            count_segments_((&"hello there").as_bytes(), (&"hello").as_bytes()),
+            2
+        );
+        assert_eq!(
+            count_segments_((&"a\nb\nc").as_bytes(), (&"\n").as_bytes()),
+            3
+        );
+        assert_eq!(
+            count_segments_((&"str").as_bytes(), (&"delimiter").as_bytes()),
+            1
+        );
+    }
+
+    #[test]
+    fn str_split() {
+        fn splits_to(string: &str, delimiter: &str, expectation: &[&[u8]]) {
+            assert_eq!(
+                str_split_(
+                    &mut [(&"").as_bytes()].repeat(expectation.len()),
+                    &string.as_bytes(),
+                    &delimiter.as_bytes()
+                ),
+                expectation
+            );
+        }
+
+        splits_to(
+            "a!b!c",
+            "!",
+            &[(&"a").as_bytes(), (&"b").as_bytes(), (&"c").as_bytes()],
+        );
+
+        splits_to(
+            "a!?b!?c!?",
+            "!?",
+            &[
+                (&"a").as_bytes(),
+                (&"b").as_bytes(),
+                (&"c").as_bytes(),
+                (&"").as_bytes(),
+            ],
+        );
+
+        splits_to("abc", "!", &[(&"abc").as_bytes()]);
+
+        splits_to(
+            "tttttghittttt",
+            "ttttt",
+            &[(&"").as_bytes(), (&"ghi").as_bytes(), (&"").as_bytes()],
+        );
+
+        splits_to("def", "!!!!!!", &[(&"def").as_bytes()]);
+    }
+}