feat: better formating for a strings.Builder{} with %V

tucats · Jan 1, 2025 · 566a715 · 566a715
1 parent 9da5410
commit 566a715
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Showing 3 changed files with 11 additions and 1 deletion.
diff --git a/data/format.go b/data/format.go
@@ -271,6 +271,9 @@ func Format(element interface{}) string {
 
 		return text.String()
 
+	case *strings.Builder:
+		return fmt.Sprintf("strings.Builder{String:\"%s\", Len:%d, Cap: %d}", v.String(), v.Len(), v.Cap())
+
 	default:
 		return formatNativeGoValue(v)
 	}

diff --git a/tests/packages/builders.ego b/tests/packages/builders.ego
@@ -27,4 +27,11 @@
 	// Force the capacity to a larger value, and see if it takes.
 	a.Grow(1200)
 	@assert a.Cap() >= 1200
+
+	// Format a builder for %V, and access the default String() method for %v
+	a = strings.Builder{}
+	a.WriteString("test")
+	a.WriteRune(int32(88))	
+	@assert fmt.Sprintf("%V", a) == `strings.Builder{String:"testX", Len:5, Cap: 8}`
+	@assert fmt.Sprintf("%v", a) == "testX"
 }
diff --git a/tools/buildver.txt b/tools/buildver.txt
@@ -1 +1 @@
-1.5-1174
+1.5-1175