1 files changed, 79 insertions, 0 deletions
diff --git a/vendor/derive_builder/tests/validation.rs b/vendor/derive_builder/tests/validation.rs
new file mode 100644
index 000000000..877764281
--- /dev/null
+++ b/vendor/derive_builder/tests/validation.rs
@@ -0,0 +1,79 @@
+#[macro_use]
+extern crate derive_builder;
+
+#[derive(Debug, Clone, Builder, PartialEq, Eq)]
+#[builder(build_fn(validate = "LoremBuilder::validate"))]
+pub struct Lorem {
+    /// A percentile. Must be between 0 and 100.
+    my_effort: u8,
+
+    /// A percentile. Must be less than or equal to `Lorem::my_effort`.
+    #[builder(default = "40")]
+    their_effort: u8,
+
+    /// A percentile. Must be between 0 and 100.
+    rivals_effort: u8,
+}
+
+impl LoremBuilder {
+    /// Performs bound checks.
+    fn validate(&self) -> Result<(), String> {
+        if let Some(ref my_effort) = self.my_effort {
+            if *my_effort > 100 {
+                return Err("Don't wear yourself out".to_string());
+            }
+        }
+
+        if let Some(ref their_effort) = self.their_effort {
+            if *their_effort > 100 {
+                return Err("The game has changed".to_string());
+            }
+        }
+
+        if let Some(ref rivals_effort) = self.rivals_effort {
+            if *rivals_effort > 100 {
+                return Err("Your rival is cheating".to_string());
+            }
+        }
+
+        Ok(())
+    }
+}
+
+#[test]
+fn out_of_bounds() {
+    assert_eq!(
+        &LoremBuilder::default()
+            .my_effort(120)
+            .build()
+            .unwrap_err()
+            .to_string(),
+        "Don't wear yourself out"
+    );
+    assert_eq!(
+        &LoremBuilder::default()
+            .rivals_effort(120)
+            .build()
+            .unwrap_err()
+            .to_string(),
+        "Your rival is cheating"
+    );
+}
+
+#[test]
+fn validation_pass() {
+    let lorem = LoremBuilder::default()
+        .my_effort(90)
+        .rivals_effort(89)
+        .build()
+        .expect("All validations should be passing");
+
+    assert_eq!(
+        lorem,
+        Lorem {
+            my_effort: 90,
+            rivals_effort: 89,
+            their_effort: 40,
+        }
+    );
+}