add a nested set test

builtin/providers/test/resource_nested_set.go

@@ -44,6 +44,37 @@ func testResourceNestedSet() *schema.Resource {
 					},
 				},
 			},
+			"multi": {
+				Type:     schema.TypeSet,
+				Optional: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"set": {
+							Type:     schema.TypeSet,
+							Optional: true,
+							Elem: &schema.Resource{
+								Schema: map[string]*schema.Schema{
+									"required": {
+										Type:     schema.TypeString,
+										Required: true,
+										ForceNew: true,
+									},
+									"optional_int": {
+										Type:     schema.TypeInt,
+										Optional: true,
+									},
+								},
+							},
+						},
+
+						"optional": {
+							Type:     schema.TypeString,
+							ForceNew: true,
+							Optional: true,
+						},
+					},
+				},
+			},
 		},
 	}
 }

builtin/providers/test/resource_nested_set_test.go

@@ -127,3 +127,79 @@ resource "test_resource_nested_set" "foo" {
 		},
 	})
 }
+func TestResourceNestedSet_multi(t *testing.T) {
+	checkFunc := func(s *terraform.State) error {
+		return nil
+	}
+	resource.UnitTest(t, resource.TestCase{
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckResourceDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+}
+				`),
+				Check: checkFunc,
+			},
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+	multi {
+		optional = "bar"
+	}
+}
+				`),
+				Check: checkFunc,
+			},
+
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+}
+								`),
+				Check: checkFunc,
+			},
+
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+	multi {
+		set {
+			required = "val"
+		}
+	}
+}
+				`),
+				Check: checkFunc,
+			},
+
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+	multi {
+		set {
+			required = "new"
+		}
+	}
+}
+				`),
+				Check: checkFunc,
+			},
+
+			resource.TestStep{
+				Config: strings.TrimSpace(`
+resource "test_resource_nested_set" "foo" {
+	multi {
+		set {
+			required = "new"
+			optional_int = 3
+		}
+	}
+}
+				`),
+				Check: checkFunc,
+			},
+		},
+	})
+}