diff --git a/src/test/GUI/test_field_slider.cpp b/src/test/GUI/test_field_slider.cpp
new file mode 100644
index 000000000..31cdb58c0
--- /dev/null
+++ b/src/test/GUI/test_field_slider.cpp
@@ -0,0 +1,156 @@
+#include <catch.hpp>
+#ifndef WX_PRECOMP
+#include <wx/app.h>
+#include <wx/sizer.h>
+#include <wx/uiaction.h>
+#include <wx/slider.h>
+#endif // WX_PRECOMP
+
+#include "testableframe.h"
+#include "OptionsGroup/Field.hpp"
+#include "ConfigBase.hpp"
+
+using namespace std::string_literals;
+
+SCENARIO( "UI_Slider: Defaults, Min/max handling, accessors.") {
+    wxTestableFrame* old = dynamic_cast<wxTestableFrame*>(wxTheApp->GetTopWindow()); 
+    old->Destroy();
+    wxTheApp->SetTopWindow(new wxTestableFrame());
+    wxUIActionSimulator sim;
+    wxMilliSleep(500);
+    auto simple_option {ConfigOptionDef()};
+    auto* default_color {new ConfigOptionString("30")};
+    simple_option.min = 0;
+    simple_option.max = 60;
+    GIVEN("A UI Slider with default scale") {
+        auto event_count {0};
+        auto test_field {Slic3r::GUI::UI_Slider(wxTheApp->GetTopWindow(), Slic3r::ConfigOptionDef())};
+        auto changefunc {[&event_count] (const std::string& opt_id, const double& color) { event_count++; }};
+        WHEN("Option min is 0") {
+            WHEN("default of 0 is used.") {
+                REQUIRE(test_field.slider()->GetMin() == 0);
+            }
+        }
+        WHEN("Option max is 0") {
+            WHEN("default of 100*10(scale) is used.") {
+                REQUIRE(test_field.slider()->GetMax() == 1000);
+            }
+        }
+        WHEN("Default value is used.") {
+            THEN("Raw slider value is 30 * scale (10) = 300") {
+                REQUIRE(test_field.slider()->GetValue() == 300);
+            }
+        }
+        WHEN("set_scale is called with 25 for argument") {
+            THEN("Slider min is 0") {
+                REQUIRE(test_field.slider()->GetMin() == 0);
+            }
+            THEN("Slider max is 100*25 = 2500") {
+                REQUIRE(test_field.slider()->GetMax() == 2500);
+            }
+            THEN("Slider raw value is 30*25 = 750") {
+                REQUIRE(test_field.slider()->GetValue() == 750);
+            }
+            THEN("UI_Slider get_double still reads 30") {
+                REQUIRE(test_field.get_double() == Approx(30));
+            }
+            THEN("UI_Slider get_int reads 30") {
+                REQUIRE(test_field.get_int() == 30);
+            }
+            THEN("Textctrl raw value still reads 30") {
+                REQUIRE(test_field.textctrl()->GetValue() == "30.0"s);
+            }
+            test_field.on_change = changefunc;
+            THEN("on_change does not fire.") {
+                REQUIRE(event_count == 0);
+            }
+        }
+    }
+    GIVEN("A UI Slider with default scale") {
+        WHEN("No default value is given from config.") {
+            simple_option.default_value = nullptr;
+            auto test_field {Slic3r::GUI::UI_Slider(wxTheApp->GetTopWindow(), Slic3r::ConfigOptionDef())};
+            THEN("Initial value of slider is 0.") {
+                REQUIRE(test_field.get_int() == 0);
+                REQUIRE(test_field.get_double() == 0);
+                REQUIRE(test_field.slider()->GetValue() == 0);
+                REQUIRE(test_field.textctrl()->GetValue() == "0.0");
+            }
+        }
+    }
+
+    GIVEN("A UI Slider with scale of 1") {
+        auto test_field {Slic3r::GUI::UI_Slider(wxTheApp->GetTopWindow(), Slic3r::ConfigOptionDef(), 1)};
+        WHEN("Option min is 0") {
+            WHEN("default of 0 is used.") {
+                REQUIRE(test_field.slider()->GetMin() == 0);
+            }
+        }
+        WHEN("Option max is 0") {
+            WHEN("default of 100 is used.") {
+                REQUIRE(test_field.slider()->GetMax() == 100);
+            }
+        }
+        WHEN("Default value is used.") {
+            THEN("Raw slider value is 30 * scale (1)") {
+                REQUIRE(test_field.slider()->GetValue() == 30);
+            }
+        }
+    }
+}
+SCENARIO( "UI_Slider: Event handlers") {
+    wxTestableFrame* old = dynamic_cast<wxTestableFrame*>(wxTheApp->GetTopWindow()); 
+    old->Destroy();
+    wxTheApp->SetTopWindow(new wxTestableFrame());
+    wxUIActionSimulator sim;
+    wxMilliSleep(500);
+    auto simple_option {ConfigOptionDef()};
+    auto* default_color {new ConfigOptionString("30")};
+    simple_option.min = 0;
+    simple_option.max = 60;
+    simple_option.default_value = default_color;
+    auto event_count {0};
+    auto changefunc {[&event_count] (const std::string& opt_id, const double& color) { event_count++; }};
+    auto killfunc {[&event_count](const std::string& opt_id) { event_count += 1; }};
+    GIVEN("A UI Slider") {
+        auto test_field {Slic3r::GUI::UI_Slider(wxTheApp->GetTopWindow(), Slic3r::ConfigOptionDef())};
+        test_field.on_change = changefunc;
+        test_field.on_kill_focus = killfunc;
+        WHEN("UI Slider receives a text change event (enter is pressed).") {
+            event_count = 0;
+            auto ev {wxCommandEvent(wxEVT_TEXT_ENTER, test_field.textctrl()->GetId())};
+            ev.SetEventObject(test_field.textctrl());
+            test_field.textctrl()->ProcessWindowEvent(ev);
+            THEN("_on_change fires") {
+                REQUIRE(event_count == 1);
+            }
+        }
+        WHEN("UI Slider textbox receives a text change event (enter is not pressed).") {
+            event_count = 0;
+            auto ev {wxCommandEvent(wxEVT_TEXT, test_field.textctrl()->GetId())};
+            ev.SetEventObject(test_field.textctrl());
+            test_field.textctrl()->ProcessWindowEvent(ev);
+            THEN("Nothing happens") {
+                REQUIRE(event_count == 0);
+            }
+        }
+        WHEN("UI Slider receives a slider changed event.") {
+            event_count = 0;
+            auto ev {wxCommandEvent(wxEVT_SLIDER, test_field.slider()->GetId())};
+            ev.SetEventObject(test_field.slider());
+            test_field.slider()->ProcessWindowEvent(ev);
+            THEN("on_change fires") {
+                REQUIRE(event_count == 1);
+            }
+        }
+        WHEN("UI_Slider text ctrl receives a kill focus event.") {
+            event_count = 0;
+            auto ev {wxFocusEvent(wxEVT_KILL_FOCUS, test_field.textctrl()->GetId())};
+            ev.SetEventObject(test_field.textctrl());
+            test_field.textctrl()->ProcessWindowEvent(ev);
+            THEN("_kill_focus and on_change fires") {
+                REQUIRE(event_count == 2);
+            }
+        }
+    }
+}