From 654b2772b883a9c42e6629649f5237974718c0f6 Mon Sep 17 00:00:00 2001
From: Tobin Harding <me@tobin.cc>
Date: Tue, 25 Jan 2022 09:24:10 +1100
Subject: [PATCH] Add passing unit tests for read_scriptbool

In preparation for refactoring `read_scriptbool` add passing unit
tests.
---
 src/blockdata/script.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/blockdata/script.rs b/src/blockdata/script.rs
index 88406702..dd3c99a1 100644
--- a/src/blockdata/script.rs
+++ b/src/blockdata/script.rs
@@ -1448,5 +1448,23 @@ mod test {
         assert!(instructions.next().is_none());
         assert!(instructions.next().is_none());
     }
+
+    #[test]
+    fn read_scriptbool_zero_is_false() {
+        let v: Vec<u8> = vec![0x00, 0x00, 0x00, 0x00];
+        assert!(!read_scriptbool(&v));
+
+        let v: Vec<u8> = vec![0x00, 0x00, 0x00, 0x80]; // With sign bit set.
+        assert!(!read_scriptbool(&v));
+    }
+
+    #[test]
+    fn read_scriptbool_non_zero_is_true() {
+        let v: Vec<u8> = vec![0x01, 0x00, 0x00, 0x00];
+        assert!(read_scriptbool(&v));
+
+        let v: Vec<u8> = vec![0x01, 0x00, 0x00, 0x80]; // With sign bit set.
+        assert!(read_scriptbool(&v));
+    }
 }