1 files changed, 6 insertions, 1 deletions
diff --git a/tests/auto/qplaintextedit/tst_qplaintextedit.cpp b/tests/auto/qplaintextedit/tst_qplaintextedit.cpp
index 40ad539ee..e8350e39b 100644
--- a/tests/auto/qplaintextedit/tst_qplaintextedit.cpp
+++ b/tests/auto/qplaintextedit/tst_qplaintextedit.cpp
@@ -856,7 +856,12 @@ void tst_QPlainTextEdit::lineWrapModes()
     ed->setLineWrapMode(QPlainTextEdit::NoWrap);
     QCOMPARE(lineCount(), 1);
     ed->setLineWrapMode(QPlainTextEdit::WidgetWidth);
-    ed->resize(1, 1000);
+
+    // QPlainTextEdit does lazy line layout on resize, only for the visible blocks.
+    // We thus need to make it wide enough to show something visible.
+    int minimumWidth = 2 * ed->document()->documentMargin();
+    minimumWidth += ed->fontMetrics().width(QLatin1Char('a'));
+    ed->resize(minimumWidth, 1000);
     QCOMPARE(lineCount(), 26);
     ed->setParent(0);
     delete window;