From cb8cd73d839a96f98bb1ce887c694271f9c24788 Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Tue, 22 Nov 2022 09:24:07 +1100
Subject: Add SCI_REPLACETARGETMINIMAL to change text without causing unchanged
 prefix and suffix to be marked as modified in change history.

---
 test/simpleTests.py | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'test/simpleTests.py')

diff --git a/test/simpleTests.py b/test/simpleTests.py
index 2b5d3bc0e..31ae42535 100644
--- a/test/simpleTests.py
+++ b/test/simpleTests.py
@@ -634,6 +634,45 @@ class TestSimple(unittest.TestCase):
 		self.assertEquals(self.ed.TargetStart, 4)
 		self.assertEquals(self.ed.TargetEnd, 5)
 
+	def testReplaceTargetMinimal(self):
+		# 1: No common characters
+		self.ed.SetContents(b"abcd")
+		self.ed.TargetStart = 1
+		self.ed.TargetEnd = 3
+		self.assertEquals(self.ed.TargetStart, 1)
+		self.assertEquals(self.ed.TargetEnd, 3)
+		rep = b"321"
+		self.ed.ReplaceTargetMinimal(len(rep), rep)
+		self.assertEquals(self.ed.Contents(), b"a321d")
+
+		# 2: New characters with common prefix and suffix
+		self.ed.TargetStart = 1
+		self.ed.TargetEnd = 4
+		rep = b"3<>1"
+		self.ed.ReplaceTargetMinimal(len(rep), rep)
+		self.assertEquals(self.ed.Contents(), b"a3<>1d")
+
+		# 3: Remove characters with common prefix and suffix
+		self.ed.TargetStart = 1
+		self.ed.TargetEnd = 5
+		rep = b"31"
+		self.ed.ReplaceTargetMinimal(len(rep), rep)
+		self.assertEquals(self.ed.Contents(), b"a31d")
+
+		# 4: Common prefix
+		self.ed.TargetStart = 1
+		self.ed.TargetEnd = 3
+		rep = b"3bc"
+		self.ed.ReplaceTargetMinimal(len(rep), rep)
+		self.assertEquals(self.ed.Contents(), b"a3bcd")
+
+		# 5: Common suffix
+		self.ed.TargetStart = 2
+		self.ed.TargetEnd = 5
+		rep = b"cd"
+		self.ed.ReplaceTargetMinimal(len(rep), rep)
+		self.assertEquals(self.ed.Contents(), b"a3cd")
+
 	def testTargetWhole(self):
 		self.ed.SetContents(b"abcd")
 		self.ed.TargetStart = 1
-- 
cgit v1.2.3