417 lines
12 KiB
Rust
417 lines
12 KiB
Rust
use super::{Context, Module, ModuleConfig};
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use crate::configs::battery::BatteryConfig;
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#[cfg(test)]
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use mockall::automock;
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use starship_battery as battery;
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use crate::formatter::StringFormatter;
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/// Creates a module for the battery percentage and charging state
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pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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let battery_status = get_battery_status(context)?;
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let BatteryStatus { state, percentage } = battery_status;
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let mut module = context.new_module("battery");
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let config: BatteryConfig = BatteryConfig::try_load(module.config);
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// Parse config under `display`.
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// Select the first style that match the threshold,
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// if all thresholds are lower do not display battery module.
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let display_style = config
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.display
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.iter()
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.find(|display_style| percentage <= display_style.threshold as f32)?;
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// Parse the format string and build the module
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match StringFormatter::new(config.format) {
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Ok(formatter) => {
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let formatter = formatter
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.map_meta(|variable, _| match variable {
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"symbol" => match state {
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battery::State::Full => Some(config.full_symbol),
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battery::State::Charging => display_style
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.charging_symbol
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.or(Some(config.charging_symbol)),
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battery::State::Discharging => display_style
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.discharging_symbol
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.or(Some(config.discharging_symbol)),
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battery::State::Unknown => Some(config.unknown_symbol),
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battery::State::Empty => Some(config.empty_symbol),
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},
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_ => None,
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})
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.map_style(|style| match style {
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"style" => Some(Ok(display_style.style)),
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_ => None,
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})
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.map(|variable| match variable {
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"percentage" => Some(Ok(format!("{}%", percentage.round()))),
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_ => None,
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});
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match formatter.parse(None, Some(context)) {
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Ok(format_string) => {
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module.set_segments(format_string);
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Some(module)
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}
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Err(e) => {
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log::warn!("Cannot parse `battery.format`: {}", e);
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None
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}
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}
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}
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Err(e) => {
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log::warn!("Cannot load `battery.format`: {}", e);
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None
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}
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}
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}
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fn get_battery_status(context: &Context) -> Option<BatteryStatus> {
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let battery_info = context.battery_info_provider.get_battery_info()?;
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if battery_info.energy_full != 0.0 {
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let battery = BatteryStatus {
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percentage: battery_info.energy / battery_info.energy_full * 100.0,
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state: battery_info.state,
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};
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log::debug!("Battery status: {:?}", battery);
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Some(battery)
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} else {
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None
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}
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}
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/// the merge returns Charging if at least one is charging
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/// Discharging if at least one is Discharging
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/// Full if both are Full or one is Full and the other Unknown
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/// Empty if both are Empty or one is Empty and the other Unknown
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/// Unknown otherwise
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fn merge_battery_states(state1: battery::State, state2: battery::State) -> battery::State {
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use battery::State::{Charging, Discharging, Unknown};
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if state1 == Charging || state2 == Charging {
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Charging
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} else if state1 == Discharging || state2 == Discharging {
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Discharging
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} else if state1 == state2 {
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state1
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} else if state1 == Unknown {
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state2
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} else if state2 == Unknown {
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state1
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} else {
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Unknown
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}
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}
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pub struct BatteryInfo {
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energy: f32,
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energy_full: f32,
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state: battery::State,
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}
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#[derive(Debug)]
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struct BatteryStatus {
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percentage: f32,
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state: battery::State,
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}
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#[cfg_attr(test, automock)]
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pub trait BatteryInfoProvider {
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fn get_battery_info(&self) -> Option<BatteryInfo>;
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}
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pub struct BatteryInfoProviderImpl;
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impl BatteryInfoProvider for BatteryInfoProviderImpl {
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fn get_battery_info(&self) -> Option<BatteryInfo> {
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let battery_manager = battery::Manager::new().ok()?;
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let batteries = battery_manager.batteries().ok()?;
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Some(
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batteries
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.filter_map(|battery| match battery {
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Ok(battery) => {
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log::debug!("Battery found: {:?}", battery);
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Some(BatteryInfo {
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energy: battery.energy().value,
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energy_full: battery.energy_full().value,
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state: battery.state(),
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})
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}
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Err(e) => {
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let level = if cfg!(target_os = "linux") {
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log::Level::Info
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} else {
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log::Level::Warn
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};
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log::log!(level, "Unable to access battery information:\n{}", &e);
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None
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}
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})
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.fold(
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BatteryInfo {
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energy: 0.0,
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energy_full: 0.0,
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state: battery::State::Unknown,
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},
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|mut acc, x| {
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acc.energy += x.energy;
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acc.energy_full += x.energy_full;
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acc.state = merge_battery_states(acc.state, x.state);
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acc
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},
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),
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)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::test::ModuleRenderer;
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use nu_ansi_term::Color;
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#[test]
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fn no_battery_status() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| None);
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = None;
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assert_eq!(expected, actual);
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}
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#[test]
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fn ignores_zero_capacity_battery() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 0.0,
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energy_full: 0.0,
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state: battery::State::Full,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = None;
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_full() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 1000.0,
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energy_full: 1000.0,
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state: battery::State::Full,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 100% "));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_charging() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 800.0,
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energy_full: 1000.0,
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state: battery::State::Charging,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 90
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 80% "));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_discharging() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 800.0,
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energy_full: 1000.0,
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state: battery::State::Discharging,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 80% "));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_unknown() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 0.0,
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energy_full: 1.0,
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state: battery::State::Unknown,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 0% "));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_empty() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 0.0,
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energy_full: 1000.0,
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state: battery::State::Empty,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 0% "));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_hidden_when_percentage_above_threshold() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 600.0,
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energy_full: 1000.0,
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state: battery::State::Full,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 50
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = None;
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_uses_style() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 400.0,
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energy_full: 1000.0,
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state: battery::State::Discharging,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 50
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style = "bold red"
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(format!("{} ", Color::Red.bold().paint(" 40%")));
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assert_eq!(expected, actual);
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}
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#[test]
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fn battery_displayed_precision() {
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let mut mock = MockBatteryInfoProvider::new();
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mock.expect_get_battery_info().times(1).returning(|| {
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Some(BatteryInfo {
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energy: 129.87654,
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energy_full: 1000.0,
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state: battery::State::Discharging,
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})
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});
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let actual = ModuleRenderer::new("battery")
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.config(toml::toml! {
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[[battery.display]]
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threshold = 100
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style = ""
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})
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.battery_info_provider(&mock)
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.collect();
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let expected = Some(String::from(" 13% "));
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assert_eq!(expected, actual);
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}
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}
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