fix(assert): Clean up num_args/action assert

Author: epage

clap_builder/src/builder/debug_asserts.rs

@@ -693,9 +693,10 @@ fn assert_arg(arg: &Arg) {
     if arg.is_takes_value_set() {
         assert!(
             arg.get_action().takes_values(),
-            "Argument `{}`'s selected action {:?} contradicts `takes_value`",
+            "Argument `{}`'s action {:?} is incompatible with `num_args({:?})`",
             arg.get_id(),
-            arg.get_action()
+            arg.get_action(),
+            arg.get_num_args().unwrap_or(1.into())
         );
     }
     if let Some(action_type_id) = arg.get_action().value_type_id() {

tests/builder/action.rs

@@ -220,7 +220,7 @@ fn set_true_with_required_if_eq() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action SetTrue contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action SetTrue is incompatible with `num_args(1..)`"]
 fn set_true_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -347,7 +347,7 @@ fn set_false_with_default_value_if_value() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action SetFalse contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action SetFalse is incompatible with `num_args(1..)`"]
 fn set_false_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -470,7 +470,7 @@ fn count_with_default_value_if_value() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action Count contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action Count is incompatible with `num_args(1..)`"]
 fn count_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -483,7 +483,7 @@ fn count_with_incompatible_num_args() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action Help contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action Help is incompatible with `num_args(1..)`"]
 fn help_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -496,7 +496,7 @@ fn help_with_incompatible_num_args() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action HelpShort contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action HelpShort is incompatible with `num_args(1..)`"]
 fn help_short_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -509,7 +509,7 @@ fn help_short_with_incompatible_num_args() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action HelpLong contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action HelpLong is incompatible with `num_args(1..)`"]
 fn help_long_with_incompatible_num_args() {
     Command::new("test")
         .arg(
@@ -522,7 +522,7 @@ fn help_long_with_incompatible_num_args() {
 }
 
 #[test]
-#[should_panic = "Argument `mammal`'s selected action Version contradicts `takes_value`"]
+#[should_panic = "Argument `mammal`'s action Version is incompatible with `num_args(1..)`"]
 fn version_with_incompatible_num_args() {
     Command::new("test")
         .version("1.0.0")