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test: improving code coverage for SourceMap class #43285

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test: improving code coverage for SourceMap class #43285

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e673ab3
test: coverage malformed mapping
italojs Jun 1, 2022
0e4364c
test: fixing lint
italojs Jun 1, 2022
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14 changes: 14 additions & 0 deletions test/parallel/test-source-map-api.js
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,20 @@ const { readFileSync } = require('fs');
assert.notStrictEqual(payload.sources, sourceMap.payload.sources);
}

// findEntry() must return empty object instead error when
// receive a malformed mappings.
{
const payload = JSON.parse(readFileSync(
require.resolve('../fixtures/source-map/disk.map'), 'utf8'
));
payload.mappings = ';;;;;;;;;';

const sourceMap = new SourceMap(payload);
const result = sourceMap.findEntry(0, 5);
assert.strictEqual(typeof result, 'object');
assert.strictEqual(Object.keys(result).length, 0);
}

// Test various known decodings to ensure decodeVLQ works correctly.
{
function makeMinimalMap(column) {
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