diff --git a/tests/UI_plot.cpp b/tests/UI_plot.cpp
new file mode 100644
index 0000000..cf63fc9
--- /dev/null
+++ b/tests/UI_plot.cpp
@@ -0,0 +1,58 @@
+#include <gtest/gtest.h>
+#include <QSignalSpy>
+#include "ui_plot.hpp"
+
+TEST(UI_plot, to_from_json)
+{
+    UI_plot plot("Plot", "X-Axis", "Y-Axis");
+    json j = plot.to_json(0);
+    UI_plot plot2;
+    plot2.from_json(j);
+    EXPECT_EQ(plot.x_label(), plot2.x_label());
+    EXPECT_EQ(plot.y_label(), plot2.y_label());
+    EXPECT_EQ(plot.x_vals(), plot2.x_vals());
+    EXPECT_EQ(plot.y_vals(), plot2.y_vals());
+}
+
+TEST(UI_plot, set_label)
+{
+    UI_plot plot("Plot", "X-Axis", "Y-Axis");
+    QSignalSpy spy_ui(&plot, &UI_plot::ui_changed);
+    plot.set_x_label("New X-Axis");
+    EXPECT_EQ(plot.x_label(), "New X-Axis");
+    plot.set_y_label("New Y-Axis");
+    EXPECT_EQ(plot.y_label(), "New Y-Axis");
+    EXPECT_EQ(spy_ui.count(), 2);
+}
+
+TEST(UI_plot, add_value)
+{
+    UI_plot plot("Plot", "X-Axis", "Y-Axis");
+    QSignalSpy spy_ui(&plot, &UI_plot::ui_changed);
+    plot.add_value(1.0);
+    plot.add_value(2.0);
+    EXPECT_EQ(plot.x_vals().size(), 2);
+    EXPECT_EQ(plot.y_vals().size(), 2);
+    EXPECT_EQ(plot.x_vals()[0], 0.0);
+    EXPECT_EQ(plot.y_vals()[0], 1.0);
+    EXPECT_EQ(plot.x_vals()[1], 1.0);
+    EXPECT_EQ(plot.y_vals()[1], 2.0);
+    plot.add_value(3.0, 4.0);
+    EXPECT_EQ(plot.x_vals().size(), 3);
+    EXPECT_EQ(plot.y_vals().size(), 3);
+    EXPECT_EQ(plot.x_vals()[2], 3.0);
+    EXPECT_EQ(plot.y_vals()[2], 4.0);
+    EXPECT_EQ(spy_ui.count(), 3);
+}
+
+TEST(UI_plot, clean_vals)
+{
+    UI_plot plot("Plot", "X-Axis", "Y-Axis");
+    plot.add_value(1.0);
+    plot.add_value(2.0);
+    QSignalSpy spy_ui(&plot, &UI_plot::ui_changed);
+    plot.clean_vals();
+    EXPECT_EQ(plot.x_vals().size(), 0);
+    EXPECT_EQ(plot.y_vals().size(), 0);
+    EXPECT_EQ(spy_ui.count(), 1);
+}