From 9cda372c64c8920d2e910825161a8ed882b417b3 Mon Sep 17 00:00:00 2001
From: Zufu Liu <unknown>
Date: Sat, 3 Jul 2021 12:59:39 +1000
Subject: Feature [feature-requests:#1408] Use positive IsDBCSTrailByteNoExcept
 function instead of negated IsDBCSTrailByteInvalid.

---
 test/unit/testDocument.cxx | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test')

diff --git a/test/unit/testDocument.cxx b/test/unit/testDocument.cxx
index cc6255caa..cecd14920 100644
--- a/test/unit/testDocument.cxx
+++ b/test/unit/testDocument.cxx
@@ -120,4 +120,16 @@ TEST_CASE("Document") {
 		REQUIRE(width == 1);
 		REQUIRE(ch == '=');
 	}
+
+	SECTION("CheckTrailBytes") {
+		Document doc(DocumentOption::Default);
+		const int pages[] = { 932, 936, 949, 950, 1361 };
+		for (const int page : pages) {
+			doc.SetDBCSCodePage(page);
+			for (int byteVal = 0; byteVal < 0x100; byteVal++) {
+				char ch = static_cast<char>(byteVal);
+				REQUIRE(doc.IsDBCSTrailByteNoExcept(ch) != doc.IsDBCSTrailByteInvalid(ch));
+			}
+		}
+	}
 }
-- 
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