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test(compiler-cli): improve error message if a unit test is bad (#38959) (#39272)

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The message now also reports the name of the predicate function
that failed.

PR Close #38959

PR Close #39272
This commit is contained in:
Pete Bacon Darwin 2020-09-27 10:42:28 +01:00 committed by atscott
parent df0941554b
commit db34b23ab5
1 changed files with 2 additions and 1 deletions
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3
packages/compiler-cli/src/ngtsc/testing/src/utils.ts
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@ -60,7 +60,8 @@ export function getDeclaration<T extends ts.Declaration>(
throw new Error(`No such symbol: ${name} in ${fileName}`); throw new Error(`No such symbol: ${name} in ${fileName}`);
} }
if (!assert(chosenDecl)) { if (!assert(chosenDecl)) {
throw new Error(`Symbol ${name} from ${fileName} is a ${ts.SyntaxKind[chosenDecl.kind]}`); throw new Error(`Symbol ${name} from ${fileName} is a ${
ts.SyntaxKind[chosenDecl.kind]}. Expected it to pass predicate "${assert.name}()".`);
} }
return chosenDecl; return chosenDecl;
} }