fix(misconf): fix rendering of nested values in terraform plan lists (#10746)

Author: nikpivkin

pkg/iac/scanners/terraformplan/tfjson/parser/block.go

@@ -144,10 +144,13 @@ func (r *hclRenderer) renderSlice(vals []any) {
 	r.incIndent()
 	defer r.decIndent()
 
-	for _, v := range vals {
+	for i, v := range vals {
 		r.write(r.indent + "  ")
-		renderPrimitive(r.w, v)
-		r.writeln(",")
+		r.renderAttributeValue(v)
+		if i != len(vals)-1 {
+			r.write(",")
+		}
+		r.writeln("")
 	}
 	r.write(r.indent + "]")
 }

pkg/iac/scanners/terraformplan/tfjson/parser/block_test.go

@@ -120,6 +120,38 @@ func Test_ToHcl(t *testing.T) {
     to_port = 80
   }
 }
+`,
+		},
+		{
+			name: "list attribute with nested lists",
+			block: PlanBlock{
+				BlockType: "resource",
+				Type:      "foo",
+				Name:      "bar",
+				Attributes: map[string]any{
+					"nested": []any{
+						[]any{"a", "b"},
+						[]any{"c"},
+						[]any{"d", "e", "f"},
+					},
+				},
+			},
+			expected: `resource "foo" "bar" {
+  nested = [
+    [
+      "a",
+      "b"
+    ],
+    [
+      "c"
+    ],
+    [
+      "d",
+      "e",
+      "f"
+    ]
+  ]
+}
 `,
 		},
 		{

pkg/iac/scanners/terraformplan/tfjson/parser/parser_test.go

@@ -57,7 +57,7 @@ resource "aws_security_group" "sg" {
   }
   ingress {
     cidr_blocks = [
-      "0.0.0.0/0",
+      "0.0.0.0/0"
     ]
     description = ""
     from_port = 80