diff --git a/CMakeLists.txt b/CMakeLists.txt
index 432657f32ef65c3433e835e6e049f946de860e64..1ce416771f7504ff94709194e5a6644bc47172e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,6 +48,22 @@ target_include_directories(${PROJECT_NAME} PRIVATE ${INCLUDE_DIR})
 
 target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Widgets)
 
+include(CTest)
+if(BUILD_TESTING)
+  add_executable(curveeditor_test
+    tests/curveeditor_test.cpp
+    src/curveeditor.cpp
+    include/curveeditor.h
+  )
+  target_include_directories(curveeditor_test PRIVATE ${INCLUDE_DIR})
+  target_link_libraries(curveeditor_test PRIVATE Qt5::Widgets)
+  add_test(NAME curveeditor_test COMMAND curveeditor_test)
+  set_tests_properties(curveeditor_test PROPERTIES
+    ENVIRONMENT "QT_QPA_PLATFORM=offscreen"
+    TIMEOUT 10
+  )
+endif()
+
 qt5_create_translation(QM_FILES ${CMAKE_SOURCE_DIR} ${TS_FILES})
 
 install(TARGETS ${PROJECT_NAME} DESTINATION bin)
diff --git a/include/curveeditor.h b/include/curveeditor.h
index 1092ea75943ae9a2de12a588fb88c9e849790804..3b97eebf173490173a540a93d0d5034fac3ca675 100644
--- a/include/curveeditor.h
+++ b/include/curveeditor.h
@@ -111,14 +111,14 @@ private:
     QRect m_contentRect;
     static constexpr int POINT_RADIUS = 6;
     
-    int gridWidth;
+    int gridWidth = 10;
 
-    int gridHeight;
+    int gridHeight = 10;
 
-    int xTickMin;
-    int xTickMax;
-    int yTickMin;
-    int yTickMax;
+    int xTickMin = 0;
+    int xTickMax = 100;
+    int yTickMin = 0;
+    int yTickMax = 100;
 
     std::string xTickTag;
     std::string yTickTag;
@@ -126,12 +126,12 @@ private:
     /**
      * @brief 网格X轴刻度步长
      */
-    int xTickStep;
+    int xTickStep = 10;
 
     /**
      * @brief 网格Y轴刻度步长
      */
-    int yTickStep;
+    int yTickStep = 10;
 };
 
-#endif // CURVEEDITOR_H
\ No newline at end of file
+#endif // CURVEEDITOR_H
diff --git a/src/curveeditor.cpp b/src/curveeditor.cpp
index 2c6e679dfe59c8b44972f5396dc305a3591da063..9510f2baec2bb477a92c2d0d733118ed7c12e1af 100644
--- a/src/curveeditor.cpp
+++ b/src/curveeditor.cpp
@@ -42,13 +42,13 @@ QVector<CurvePoint> CurveEditor::getCurrentPoints() const
 
 void CurveEditor::setGridWidth(int width) 
 {
-    gridWidth = width;
+    gridWidth = qMax(1, width);
     update();
 }
 
 void CurveEditor::setGridHeight(int height) 
 {
-    gridHeight = height;
+    gridHeight = qMax(1, height);
     update();
 }
 
@@ -66,27 +66,27 @@ void CurveEditor::setYTickTag(std::string tag)
 
 void CurveEditor::setYTickStep(int step) 
 {
-    yTickStep = step;
+    yTickStep = qMax(1, step);
     update();
 }
 
 void CurveEditor::setXTickStep(int step) 
 {
-    xTickStep = step;
+    xTickStep = qMax(1, step);
     update();
 }
 
 void CurveEditor::setYTickRange(int min, int max) 
 {
-    yTickMin = min;
-    yTickMax = max;
+    yTickMin = qMin(min, max);
+    yTickMax = qMax(min, max);
     update();
 }
 
 void CurveEditor::setXTickRange(int min, int max) 
 {
-    xTickMin = min;
-    xTickMax = max;
+    xTickMin = qMin(min, max);
+    xTickMax = qMax(min, max);
     update();
 }
 
@@ -349,4 +349,4 @@ void CurveEditor::validateCurve()
     for (int i = 0; i < m_points.size(); ++i) {
         adjustPointPosition(i);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/curveeditor_test.cpp b/tests/curveeditor_test.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b8fe4d8b36c442d8ae7f29273796f4a13281a1f1
--- /dev/null
+++ b/tests/curveeditor_test.cpp
@@ -0,0 +1,39 @@
+#include "curveeditor.h"
+
+#include <QApplication>
+#include <QImage>
+#include <QPainter>
+
+#include <cstdlib>
+
+namespace {
+
+bool renderWidget(CurveEditor &editor)
+{
+    QImage image(editor.size(), QImage::Format_ARGB32_Premultiplied);
+    image.fill(Qt::transparent);
+    QPainter painter(&image);
+    editor.render(&painter);
+    return !image.isNull();
+}
+
+} // namespace
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    CurveEditor editor;
+    if (!renderWidget(editor)) {
+        return EXIT_FAILURE;
+    }
+
+    editor.setGridWidth(0);
+    editor.setGridHeight(-1);
+    editor.setXTickStep(0);
+    editor.setYTickStep(-10);
+    editor.setXTickRange(100, 0);
+    editor.setYTickRange(100, 0);
+
+    return renderWidget(editor) ? EXIT_SUCCESS : EXIT_FAILURE;
+}