ui: basic map scroller

client/world/renderer_style_test.go

@@ -0,0 +1,58 @@
+package world
+
+import (
+	"image/color"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestWorldRender_AppliesLineStyle(t *testing.T) {
+	t.Parallel()
+
+	w := NewWorld(10, 10)
+	w.resetGrid(2 * SCALE)
+
+	_, err := w.AddLine(9, 5, 1, 5)
+	require.NoError(t, err)
+
+	for _, obj := range w.objects {
+		w.indexObject(obj)
+	}
+
+	custom := DefaultRenderStyle()
+	custom.LineWidthPx = 3
+	custom.LineDash = []float64{5, 2}
+	custom.LineDashOffset = 1
+	custom.LineStroke = color.RGBA{R: 255, A: 255}
+
+	params := RenderParams{
+		ViewportWidthPx:  10,
+		ViewportHeightPx: 10,
+		MarginXPx:        2,
+		MarginYPx:        2,
+		CameraXWorldFp:   5 * SCALE,
+		CameraYWorldFp:   5 * SCALE,
+		CameraZoom:       1.0,
+		Options: &RenderOptions{
+			Layers: []RenderLayer{RenderLayerLines},
+			Style:  &custom,
+		},
+	}
+
+	d := &fakePrimitiveDrawer{}
+	err = w.Render(d, params)
+	require.NoError(t, err)
+
+	// There must be at least one AddLine call, and every AddLine must observe
+	// the configured line state snapshot.
+	cmds := d.CommandsByName("AddLine")
+	require.NotEmpty(t, cmds)
+
+	for _, cmd := range cmds {
+		require.Equal(t, 3.0, cmd.LineWidth)
+		require.Equal(t, []float64{5, 2}, cmd.Dashes)
+		require.Equal(t, 1.0, cmd.DashOffset)
+		require.Equal(t, color.RGBA{R: 255, A: 255}, cmd.StrokeColor)
+	}
+}