[core] Add unit test for tagged string's image sections

1 files changed, 17 insertions, 0 deletions

diff --git a/test/text/tagged_string.test.cpp b/test/text/tagged_string.test.cpp
index ebf10c47f4..e22284541c 100644
--- a/test/text/tagged_string.test.cpp
+++ b/test/text/tagged_string.test.cpp
@@ -25,3 +25,20 @@ TEST(TaggedString, Trim) {
     noTrim.trim();
     EXPECT_EQ(noTrim.rawText(), u"no trim!");
 }
+
+TEST(TaggedString, ImageSections) {
+    TaggedString string;
+    string.addImageSection("image_name");
+    EXPECT_EQ(string.rawText(), u"\uE000");
+    EXPECT_TRUE(string.getSection(0).imageID);
+    EXPECT_EQ(*string.getSection(0).imageID, "image_name");
+
+    TaggedString maxSections;
+    for (std::size_t i = 0; i < 6401; ++i) {
+        maxSections.addImageSection(util::toString(i));
+    }
+
+    EXPECT_EQ(maxSections.getSections().size(), 6400u);
+    EXPECT_EQ(maxSections.getCharCodeAt(0), u'\uE000');
+    EXPECT_EQ(maxSections.getCharCodeAt(6399), u'\uF8FF');
+}
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