Refactor: features tests

1 files changed, 139 insertions, 0 deletions

diff --git a/src/features/diff_so_fancy.rs b/src/features/diff_so_fancy.rs
index fa5952db..0013ef37 100644
--- a/src/features/diff_so_fancy.rs
+++ b/src/features/diff_so_fancy.rs
@@ -55,3 +55,142 @@ pub fn make_feature() -> Vec<(String, FeatureValueFunction)> {
     ]));
     feature
 }
+
+#[cfg(test)]
+pub mod tests {
+    use std::fs::remove_file;
+
+    use crate::features;
+
+    #[test]
+    fn test_diff_so_fancy_defaults() {
+        let config = features::tests::make_config(&["--features", "diff-so-fancy"], None, None);
+
+        assert_eq!(
+            config.commit_style.ansi_term_style,
+            features::tests::make_style("bold yellow").ansi_term_style
+        );
+        assert_eq!(
+            config.commit_style.decoration_style,
+            features::tests::make_decoration_style("none")
+        );
+
+        assert_eq!(
+            config.file_style.ansi_term_style,
+            features::tests::make_style("11").ansi_term_style
+        );
+        assert_eq!(
+            config.file_style.decoration_style,
+            features::tests::make_decoration_style("bold yellow ul ol")
+        );
+
+        assert_eq!(
+            config.hunk_header_style.ansi_term_style,
+            features::tests::make_style("bold syntax").ansi_term_style
+        );
+        assert_eq!(
+            config.hunk_header_style.decoration_style,
+            features::tests::make_decoration_style("magenta box")
+        );
+    }
+
+    #[test]
+    fn test_diff_so_fancy_respects_git_config() {
+        let git_config_contents = b"
+[color \"diff\"]
+    meta = 11
+    frag = magenta bold
+    commit = yellow bold
+    old = red bold
+    new = green bold
+    whitespace = red reverse
+";
+        let git_config_path = "delta__test_diff_so_fancy.gitconfig";
+
+        let config = features::tests::make_config(
+            &["--features", "diff-so-fancy some-other-feature"],
+            Some(git_config_contents),
+            Some(git_config_path),
+        );
+
+        assert_eq!(
+            config.commit_style.ansi_term_style,
+            features::tests::make_style("yellow bold").ansi_term_style
+        );
+        assert_eq!(
+            config.file_style.ansi_term_style,
+            features::tests::make_style("11").ansi_term_style
+        );
+        assert_eq!(
+            config.hunk_header_style.ansi_term_style,
+            features::tests::make_style("magenta bold").ansi_term_style
+        );
+        assert_eq!(
+            config.commit_style.decoration_style,
+            features::tests::make_decoration_style("none")
+        );
+        assert_eq!(
+            config.file_style.decoration_style,
+            features::tests::make_decoration_style("yellow bold ul ol")
+        );
+        assert_eq!(
+            config.hunk_header_style.decoration_style,
+            features::tests::make_decoration_style("magenta box")
+        );
+
+        remove_file(git_config_path).unwrap();
+    }
+
+    #[test]
+    fn test_diff_so_fancy_obeys_feature_precedence_rules() {
+        let git_config_contents = b"
+[color \"diff\"]
+    meta = 11
+    frag = magenta bold
+    commit = yellow bold
+    old = red bold
+    new = green bold
+    whitespace = red reverse
+
+[delta \"decorations\"]
+    commit-decoration-style = bold box ul
+    file-style = bold 19 ul
+    file-decoration-style = none
+";
+        let git_config_path = "delta__test_diff_so_fancy_obeys_feature_precedence_rules.gitconfig";
+
+        let config = features::tests::make_config(
+            &["--features", "decorations diff-so-fancy"],
+            Some(git_config_contents),
+            Some(git_config_path),
+        );
+
+        assert_eq!(
+            config.file_style.ansi_term_style,
+            features::tests::make_style("11").ansi_term_style
+        );
+
+        assert_eq!(
+            config.file_style.decoration_style,
+            features::tests::make_decoration_style("yellow bold ul ol")
+        );
+
+        let config = features::tests::make_config(
+            &["--features", "diff-so-fancy decorations"],
+            Some(git_config_contents),
+            Some(git_config_path),
+        );
+
+        assert_eq!(
+            config.file_style.ansi_term_style,
+            features::tests::make_style("ul bold 19").ansi_term_style
+        );
+
+        assert_eq!(
+            config.file_style.decoration_style,
+            features::tests::make_decoration_style("none")
+        );
+
+        remove_file(git_config_path).unwrap();
+    }
+}