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use crate::config::*;
use crate::errors::*;
use crate::test_loader::TracerData;
use crate::traces::*;
use log::{error, info};
use serde::Serialize;
use std::fs::{create_dir_all, File};
use std::io::BufReader;
pub mod cobertura;
pub mod coveralls;
pub mod html;
pub mod json;
pub mod lcov;
mod safe_json;
pub trait Report<Out: Serialize> {
fn export(coverage_data: &[TracerData], config: &Config);
}
pub fn report_coverage(config: &Config, result: &TraceMap) -> Result<(), RunError> {
if !result.is_empty() {
info!("Coverage Results:");
if config.verbose {
print_missing_lines(config, result);
}
print_summary(config, result);
generate_requested_reports(config, result)?;
let mut report_dir = config.target_dir();
report_dir.push("tarpaulin");
if !report_dir.exists() {
let _ = create_dir_all(&report_dir);
}
report_dir.push("coverage.json");
let file = File::create(&report_dir)
.map_err(|_| RunError::CovReport("Failed to create run report".to_string()))?;
serde_json::to_writer(&file, &result)
.map_err(|_| RunError::CovReport("Failed to save run report".to_string()))?;
Ok(())
} else if !config.no_run {
Err(RunError::CovReport(
"No coverage results collected.".to_string(),
))
} else {
Ok(())
}
}
fn generate_requested_reports(config: &Config, result: &TraceMap) -> Result<(), RunError> {
if config.is_coveralls() {
coveralls::export(result, config)?;
info!("Coverage data sent");
}
if !config.is_default_output_dir() && create_dir_all(&config.output_dir()).is_err() {
return Err(RunError::OutFormat(format!(
"Failed to create or locate custom output directory: {:?}",
config.output_directory,
)));
}
for g in &config.generate {
match *g {
OutputFile::Xml => {
cobertura::report(result, config).map_err(RunError::XML)?;
}
OutputFile::Html => {
html::export(result, config)?;
}
OutputFile::Lcov => {
lcov::export(result, config)?;
}
OutputFile::Json => {
json::export(result, config)?;
}
_ => {
return Err(RunError::OutFormat(
"Output format is currently not supported!".to_string(),
));
}
}
}
Ok(())
}
fn print_missing_lines(config: &Config, result: &TraceMap) {
println!("|| Uncovered Lines:");
for (ref key, ref value) in result.iter() {
let path = config.strip_base_dir(key);
let mut uncovered_lines = vec![];
for v in value.iter() {
match v.stats {
CoverageStat::Line(count) if count == 0 => {
uncovered_lines.push(v.line);
}
_ => (),
}
}
uncovered_lines.sort();
let (groups, last_group) = uncovered_lines
.into_iter()
.fold((vec![], vec![]), accumulate_lines);
let (groups, _) = accumulate_lines((groups, last_group), u64::max_value());
if !groups.is_empty() {
println!("|| {}: {}", path.display(), groups.join(", "));
}
}
}
fn get_previous_result(config: &Config) -> Option<TraceMap> {
let mut report_dir = config.target_dir();
report_dir.push("tarpaulin");
if report_dir.exists() {
report_dir.push("coverage.json");
let file = File::open(&report_dir).ok()?;
let reader = BufReader::new(file);
serde_json::from_reader(reader).ok()
} else {
create_dir_all(&report_dir)
.unwrap_or_else(|e| error!("Failed to create report directory: {}", e));
None
}
}
fn print_summary(config: &Config, result: &TraceMap) {
let last = match get_previous_result(config) {
Some(l) => l,
None => TraceMap::new(),
};
println!("|| Tested/Total Lines:");
for file in result.files() {
let path = config.strip_base_dir(file);
if last.contains_file(file) {
let last_percent = coverage_percentage(&last.get_child_traces(file));
let current_percent = coverage_percentage(&result.get_child_traces(file));
let delta = 100.0f64 * (current_percent - last_percent);
println!(
"|| {}: {}/{} {:+}%",
path.display(),
result.covered_in_path(&file),
result.coverable_in_path(&file),
delta
);
} else {
println!(
"|| {}: {}/{}",
path.display(),
result.covered_in_path(&file),
result.coverable_in_path(&file)
);
}
}
let percent = result.coverage_percentage() * 100.0f64;
if last.is_empty() {
println!(
"|| \n{:.2}% coverage, {}/{} lines covered",
percent,
result.total_covered(),
result.total_coverable()
);
} else {
let delta = percent - 100.0f64 * last.coverage_percentage();
println!(
"|| \n{:.2}% coverage, {}/{} lines covered, {:+}% change in coverage",
percent,
result.total_covered(),
result.total_coverable(),
delta
);
}
}
fn accumulate_lines(
(mut acc, mut group): (Vec<String>, Vec<u64>),
next: u64,
) -> (Vec<String>, Vec<u64>) {
if let Some(last) = group.last().cloned() {
if next == last + 1 {
group.push(next);
(acc, group)
} else {
match (group.first(), group.last()) {
(Some(first), Some(last)) if first == last => {
acc.push(format!("{}", first));
}
(Some(first), Some(last)) => {
acc.push(format!("{}-{}", first, last));
}
(Some(_), None) | (None, _) => (),
};
(acc, vec![next])
}
} else {
group.push(next);
(acc, group)
}
}