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Improve rustdoc JS tests error output

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This commit is contained in:
Guillaume Gomez 2020-11-26 14:02:01 +01:00
parent 53d19b37c5
commit fa14f22fcb
1 changed files with 31 additions and 0 deletions
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31
src/tools/rustdoc-js/tester.js
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@ -190,6 +190,30 @@ function loadThings(thingsToLoad, kindOfLoad, funcToCall, fileContent) {
return content;
}
function contentToDiffLine(key, value) {
return `"${key}": "${value}",`;
}
// This function is only called when no matching result was found and therefore will only display
// the diff between the two items.
function betterLookingDiff(entry, data) {
let output = ' {\n';
let spaces = ' ';
for (let key in entry) {
if (!entry.hasOwnProperty(key)) {
continue;
}
let value = data[key];
if (value !== entry[key]) {
output += '-' + spaces + contentToDiffLine(key, entry[key]) + '\n';
output += '+' + spaces + contentToDiffLine(key, value) + '\n';
} else {
output += spaces + contentToDiffLine(key, value) + '\n';
}
}
return output + ' }';
}
function lookForEntry(entry, data) {
for (var i = 0; i < data.length; ++i) {
var allGood = true;
@ -281,6 +305,13 @@ function runSearch(query, expected, index, loaded, loadedFile, queryName) {
if (entry_pos === null) {
error_text.push(queryName + "==> Result not found in '" + key + "': '" +
JSON.stringify(entry[i]) + "'");
// By default, we just compare the two first items.
let item_to_diff = 0;
if ((ignore_order === false || exact_check === true) && i < results[key].length) {
item_to_diff = i;
}
error_text.push("Diff of first error:\n" +
betterLookingDiff(entry[i], results[key][item_to_diff]));
} else if (exact_check === true && prev_pos + 1 !== entry_pos) {
error_text.push(queryName + "==> Exact check failed at position " + (prev_pos + 1) +
": expected '" + JSON.stringify(entry[i]) + "' but found '" +