From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 14 May 2022 14:18:18 +0000 (+0100)
Subject: shapelib subst: Add test cases for subst()
X-Git-Tag: otter-1.1.0~185
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=0e6c573edfd36ce522c9a5170781f81eba53c90b;p=otter.git

shapelib subst: Add test cases for subst()

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/shapelib.rs b/src/shapelib.rs
index 4de0d671..76e35f28 100644
--- a/src/shapelib.rs
+++ b/src/shapelib.rs
@@ -153,7 +153,7 @@ pub enum LibraryLoadMFIncompat {
 }
 pub use LibraryLoadMFIncompat as LLMI;
 
-#[derive(Error,Copy,Clone,Debug)]
+#[derive(Error,Copy,Clone,Debug,Eq,PartialEq)]
 pub enum SubstErrorKind {
   #[error("missing or unrecognised token {0}")] MissingToken (&'static str),
   #[error("repeated token {0}")]                RepeatedToken(&'static str),
@@ -1132,6 +1132,19 @@ fn subst(before: &str, needle: &'static str, replacement: &str)
     + rhs
 }
 
+#[test]
+fn test_subst() {
+  use SubstErrorKind as SEK;
+  assert_eq!(subst("a _colour die", "_colour", "blue").unwrap(),
+             "a blue die");
+  assert_eq!(subst("a _colour die", "_colour", "").unwrap(),
+             "a die");
+  assert_eq!(subst("a die", "_colour", "").unwrap_err().kind,
+             SEK::MissingToken("_colour"));
+  assert_eq!(subst("a _colour _colour die", "_colour", "").unwrap_err().kind,
+             SEK::RepeatedToken("_colour"));
+}
+
 #[throws(LibraryLoadError)]
 fn format_item_name(item_prefix: &str, fe: &FileData, item_suffix: &str)
                     -> GoodItemName {