WIP components (as built)

parameter_panel_test.go

@@ -1,6 +1,8 @@
 package mujica
 
 import (
+	"fmt"
+	"math"
 	"testing"
 
 	"github.com/egoist/mygo/ui"
@@ -67,3 +69,45 @@ func TestParameterPanelSnapshot(t *testing.T) {
 		ui.Column(c).Padding(16).Children(func() { ParameterPanel(c, paramSample(&temp, &topP)) })
 	})
 }
+
+func TestParameterPanelRejectsNonFiniteAndOutOfRange(t *testing.T) {
+	for _, v := range []float64{math.NaN(), math.Inf(1), -1, 3} {
+		t.Run(fmt.Sprint(v), func(t *testing.T) {
+			defer func() {
+				if recover() == nil {
+					t.Fatal("invalid parameter value accepted")
+				}
+			}()
+			ui.NewTester(func(c *ui.Context) {
+				Use(c, Settings{})
+				ParameterPanel(c, []ModelParam{{Label: "Temperature", Value: &v, Min: 0, Max: 2, Step: 0.1, Default: 1}})
+			}, 400, 300)
+		})
+	}
+}
+
+func TestParameterPanelRequiresDefaultOnStepGrid(t *testing.T) {
+	v := 0.9
+	defer func() {
+		if recover() == nil {
+			t.Fatal("off-grid default accepted")
+		}
+	}()
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ParameterPanel(c, []ModelParam{{Label: "Temperature", Value: &v, Min: 0, Max: 2, Step: 0.1, Default: 0.95}})
+	}, 400, 300)
+}
+
+func TestParameterPanelRequiresValueOnStepGrid(t *testing.T) {
+	v := 0.5
+	defer func() {
+		if recover() == nil {
+			t.Fatal("off-grid value accepted")
+		}
+	}()
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ParameterPanel(c, []ModelParam{{Label: "Temperature", Value: &v, Min: 0, Max: 1, Step: 0.2, Default: 0.4}})
+	}, 400, 300)
+}