From 29fafd1a6391231a074528efec107ecfcc42932e Mon Sep 17 00:00:00 2001
From: Ed Page <epage@duosecurity.com>
Date: Wed, 7 Apr 2021 20:49:52 -0500
Subject: [PATCH] test(config): Verify layering

---
 src/config.rs | 84 ++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 77 insertions(+), 7 deletions(-)

diff --git a/src/config.rs b/src/config.rs
index dba0e2b..b1e98f1 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct Config {
@@ -56,7 +56,7 @@ impl Config {
     }
 }
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct Walk {
@@ -137,7 +137,7 @@ impl Walk {
     }
 }
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct TypeEngineConfig {
@@ -153,7 +153,7 @@ impl TypeEngineConfig {
     }
 }
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct EngineConfig {
@@ -226,7 +226,7 @@ impl EngineConfig {
     }
 }
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct TokenizerConfig {
@@ -297,7 +297,7 @@ impl TokenizerConfig {
     }
 }
 
-#[derive(Debug, Clone, Default, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(deny_unknown_fields, default)]
 #[serde(rename_all = "kebab-case")]
 pub struct DictConfig {
@@ -366,7 +366,7 @@ fn find_project_file(dir: &std::path::Path, names: &[&str]) -> Option<std::path:
     None
 }
 
-#[derive(Debug, Copy, Clone, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[serde(rename_all = "kebab-case")]
 pub enum Locale {
     En,
@@ -424,3 +424,73 @@ impl std::fmt::Display for Locale {
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_from_defaults() {
+        let null = Config::default();
+        let defaulted = Config::from_defaults();
+        assert_ne!(defaulted, null);
+        assert_ne!(defaulted.files, null.files);
+        assert_ne!(defaulted.default, null.default);
+        assert_ne!(defaulted.default.tokenizer, null.default.tokenizer);
+        assert_ne!(defaulted.default.dict, null.default.dict);
+    }
+
+    #[test]
+    fn test_update_from_nothing() {
+        let null = Config::default();
+        let defaulted = Config::from_defaults();
+
+        let mut actual = defaulted.clone();
+        actual.update(&null);
+
+        assert_eq!(actual, defaulted);
+    }
+
+    #[test]
+    fn test_update_from_defaults() {
+        let null = Config::default();
+        let defaulted = Config::from_defaults();
+
+        let mut actual = null.clone();
+        actual.update(&defaulted);
+
+        assert_eq!(actual, defaulted);
+    }
+
+    #[test]
+    fn test_extend_glob_updates() {
+        let null = TypeEngineConfig::default();
+        let extended = TypeEngineConfig {
+            extend_glob: vec!["*.foo".into()],
+            ..Default::default()
+        };
+
+        let mut actual = null.clone();
+        actual.update(&extended);
+
+        assert_eq!(actual, extended);
+    }
+
+    #[test]
+    fn test_extend_glob_extends() {
+        let base = TypeEngineConfig {
+            extend_glob: vec!["*.foo".into()],
+            ..Default::default()
+        };
+        let extended = TypeEngineConfig {
+            extend_glob: vec!["*.bar".into()],
+            ..Default::default()
+        };
+
+        let mut actual = base.clone();
+        actual.update(&extended);
+
+        let expected: Vec<kstring::KString> = vec!["*.foo".into(), "*.bar".into()];
+        assert_eq!(actual.extend_glob, expected);
+    }
+}