feat: add confliction with subdomain

Author: jakehwll

provider/app.go

@@ -85,8 +85,9 @@ func appResource() *schema.Resource {
 				Type: schema.TypeString,
 				Description: "A command to run in a terminal opening this app. In the web, " +
 					"this will open in a new tab. In the CLI, this will SSH and execute the command. " +
-					"Either `command` or `url` may be specified, but not both.",
-				ConflictsWith: []string{"url"},
+					"Either `command` or `url` may be specified, but not both." +
+					"If `command` is specified, `subdomain` must either be false or not specified.",
+				ConflictsWith: []string{"url", "subdomain"},
 				Optional:      true,
 				ForceNew:      true,
 			},

provider/app_test.go

@@ -596,4 +596,36 @@ func TestApp(t *testing.T) {
 			})
 		}
 	})
+
+	// TODO: Find a better place for this?
+	// TODO: Do we need to test this with the schema rules already existing?
+	t.Run("Command", func(t *testing.T) {
+		t.Parallel()
+
+		cases := []struct {
+			name        string
+			command     string
+			subdomain   bool
+			expectError *regexp.Regexp
+		}{
+			{
+				name:    "Command",
+				command: "read -p \"Workspace spawned. Press enter to continue...\"",
+			},
+			{
+				name:        "CommandAndURL",
+				command:     "read -p \"Workspace spawned. Press enter to continue...\"",
+				subdomain:   true,
+				expectError: regexp.MustCompile("conflicts with subdomain"),
+			},
+		}
+
+		for _, c := range cases {
+			c := c
+
+			t.Run(c.name, func(t *testing.T) {
+				t.Parallel()
+			})
+		}
+	})
 }