feat: Initial support for custom user-defined themes

src/ui/theme_tests.rs

@@ -0,0 +1,191 @@
+mod tests {
+  use crate::ui::theme::{Background, Style, Theme, ThemeDefinition};
+  use pretty_assertions::assert_eq;
+  use ratatui::style::Color;
+
+  #[test]
+  fn test_background_default() {
+    let expected_background = Background {
+      enabled: Some(true),
+      color: Some(Color::Rgb(35, 50, 55)),
+    };
+
+    assert_eq!(Background::default(), expected_background);
+  }
+
+  #[test]
+  fn test_theme_default() {
+    let expected_theme = Theme {
+      background: Some(Background {
+        enabled: Some(true),
+        color: Some(Color::Rgb(35, 50, 55)),
+      }),
+      awaiting_import: Some(Style {
+        color: Some(Color::Rgb(255, 170, 66)),
+      }),
+      indeterminate: Some(Style {
+        color: Some(Color::Rgb(255, 170, 66)),
+      }),
+      default: Some(Style {
+        color: Some(Color::White),
+      }),
+      downloaded: Some(Style {
+        color: Some(Color::Green),
+      }),
+      downloading: Some(Style {
+        color: Some(Color::Magenta),
+      }),
+      failure: Some(Style {
+        color: Some(Color::Red),
+      }),
+      help: Some(Style {
+        color: Some(Color::LightBlue),
+      }),
+      missing: Some(Style {
+        color: Some(Color::Red),
+      }),
+      primary: Some(Style {
+        color: Some(Color::Cyan),
+      }),
+      secondary: Some(Style {
+        color: Some(Color::Yellow),
+      }),
+      success: Some(Style {
+        color: Some(Color::Green),
+      }),
+      system_function: Some(Style {
+        color: Some(Color::Yellow),
+      }),
+      unmonitored: Some(Style {
+        color: Some(Color::Gray),
+      }),
+      unmonitored_missing: Some(Style {
+        color: Some(Color::Yellow),
+      }),
+      unreleased: Some(Style {
+        color: Some(Color::LightCyan),
+      }),
+      warning: Some(Style {
+        color: Some(Color::Magenta),
+      }),
+    };
+
+    assert_eq!(Theme::default(), expected_theme);
+  }
+
+  #[test]
+  fn test_default_theme_definition() {
+    let expected_theme_definition = ThemeDefinition {
+      name: String::new(),
+      theme: Theme::default(),
+    };
+
+    assert_eq!(ThemeDefinition::default(), expected_theme_definition);
+  }
+
+  #[test]
+  fn test_deserialization_defaults_to_using_default_theme_values_when_missing() {
+    let theme_yaml = r#""#;
+    let theme: Theme = serde_yaml::from_str(theme_yaml).unwrap();
+
+    assert_eq!(theme, Theme::default());
+  }
+
+  #[test]
+  fn test_deserialization_does_not_overwrite_non_empty_fields_with_default_values() {
+    let theme_yaml = r###"
+background:
+  enabled: false
+  color: "#000000"
+awaiting_import:
+  color: "#000000"
+indeterminate:
+  color: "#000000"
+default:
+  color: "#000000"
+downloaded:
+  color: "#000000"
+downloading:
+  color: "#000000"
+failure:
+  color: "#000000"
+help:
+  color: "#000000"
+missing:
+  color: "#000000"
+primary:
+  color: "#000000"
+secondary:
+  color: "#000000"
+success:
+  color: "#000000"
+system_function:
+  color: "#000000"
+unmonitored:
+  color: "#000000"
+unmonitored_missing:
+  color: "#000000"
+unreleased:
+  color: "#000000"
+warning:
+  color: "#000000"
+"###;
+    let theme: Theme = serde_yaml::from_str(theme_yaml).unwrap();
+    let expected_theme = Theme {
+      background: Some(Background {
+        enabled: Some(false),
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      awaiting_import: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      indeterminate: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      default: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      downloaded: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      downloading: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      failure: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      help: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      missing: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      primary: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      secondary: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      success: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      system_function: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      unmonitored: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      unmonitored_missing: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      unreleased: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+      warning: Some(Style {
+        color: Some(Color::Rgb(0, 0, 0)),
+      }),
+    };
+
+    assert_eq!(theme, expected_theme);
+  }
+}