code shape: apply font-size to render

ci/release/changelogs/next.md

@@ -18,3 +18,4 @@
 - Fixes error with an empty nested grid [#1594](https://github.com/terrastruct/d2/issues/1594)
 - Fixes incorrect `d2fmt` with variable substitution mid-string [#1611](https://github.com/terrastruct/d2/issues/1611)
 - Fixes dagre error with child named id [#1610](https://github.com/terrastruct/d2/issues/1610)
+- Fixes font-size missing from rendered code shape [#1614](https://github.com/terrastruct/d2/issues/1614)

d2renderers/d2svg/d2svg.go

@@ -1267,7 +1267,13 @@ func drawShape(writer, appendixWriter io.Writer, diagramHash string, targetShape
 				if !isLight {
 					class = "dark-code"
 				}
-				fmt.Fprintf(writer, `<g transform="translate(%f %f)" class="%s">`, box.TopLeft.X, box.TopLeft.Y, class)
+				var fontSize string
+				if targetShape.FontSize != d2fonts.FONT_SIZE_M {
+					fontSize = fmt.Sprintf(` style="font-size:%v"`, targetShape.FontSize)
+				}
+				fmt.Fprintf(writer, `<g transform="translate(%f %f)" class="%s"%s>`,
+					box.TopLeft.X, box.TopLeft.Y, class, fontSize,
+				)
 				rectEl := d2themes.NewThemableElement("rect")
 				rectEl.Width = float64(targetShape.Width)
 				rectEl.Height = float64(targetShape.Height)

e2etests/regression_test.go

@@ -1045,6 +1045,7 @@ cf many required: {
 		loadFromFile(t, "arrowhead_font_color"),
 		loadFromFile(t, "multiple_constant_nears"),
 		loadFromFile(t, "empty_nested_grid"),
+		loadFromFile(t, "code_font_size"),
 	}
 
 	runa(t, tcs)

e2etests/testdata/files/code_font_size.d2

@@ -0,0 +1,25 @@
+'Data' -- y
+x -- 'Data'
+'Data': {
+  style.fill: "#c8e9ad"
+  style.stroke: "#c8e9ad"
+  style.stroke-width: 15
+  ex: |go
+    Testing 001:        AAA
+    Testing 002:        BBB
+    Testing 003:        CCC
+    Testing 004:        DDD
+    Testing 005:        EEE
+    Testing 006:        FFF
+    Testing 007:        GGG
+    Testing 008:        HHH
+    Testing 009:        III
+    Testing 010:        JJJ
+    Testing 011:        KKK
+    Testing 012:        LLL
+    Testing 013:        MMM
+    Testing 014:        NNN
+    Testing 015:        OOO
+  |
+  ex.style.font-size: 10
+}