bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'lib/smol_str/tests/test.rs')
-rw-r--r--lib/smol_str/tests/test.rs38
1 files changed, 37 insertions, 1 deletions
diff --git a/lib/smol_str/tests/test.rs b/lib/smol_str/tests/test.rs
index 631f7d78bf..0d553caabc 100644
--- a/lib/smol_str/tests/test.rs
+++ b/lib/smol_str/tests/test.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
#[cfg(not(miri))]
use proptest::{prop_assert, prop_assert_eq, proptest};
-use smol_str::SmolStr;
+use smol_str::{SmolStr, SmolStrBuilder};
#[test]
#[cfg(target_pointer_width = "64")]
@@ -255,6 +255,42 @@ fn test_to_smolstr() {
assert_eq!(a, smol_str::format_smolstr!("{}", a));
}
}
+#[test]
+fn test_builder() {
+ //empty
+ let builder = SmolStrBuilder::new();
+ assert_eq!("", builder.finish());
+
+ // inline push
+ let mut builder = SmolStrBuilder::new();
+ builder.push_str("a");
+ builder.push_str("b");
+ let s = builder.finish();
+ assert!(!s.is_heap_allocated());
+ assert_eq!("ab", s);
+
+ // inline max push
+ let mut builder = SmolStrBuilder::new();
+ builder.push_str(&"a".repeat(23));
+ let s = builder.finish();
+ assert!(!s.is_heap_allocated());
+ assert_eq!("a".repeat(23), s);
+
+ // heap push immediate
+ let mut builder = SmolStrBuilder::new();
+ builder.push_str(&"a".repeat(24));
+ let s = builder.finish();
+ assert!(s.is_heap_allocated());
+ assert_eq!("a".repeat(24), s);
+
+ // heap push succession
+ let mut builder = SmolStrBuilder::new();
+ builder.push_str(&"a".repeat(23));
+ builder.push_str(&"a".repeat(23));
+ let s = builder.finish();
+ assert!(s.is_heap_allocated());
+ assert_eq!("a".repeat(46), s);
+}
#[cfg(test)]
mod test_str_ext {