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improve test coverage

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This commit is contained in:
nayni
2018-03-10 14:50:26 +01:00
parent 7134742338
commit 64ca985e2a
1 changed files with 42 additions and 6 deletions
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48
types/graphql-resolve-batch/graphql-resolve-batch-tests.ts
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@@ -16,6 +16,14 @@ interface SomeTestResult {
someTestResultProp: string;
}
const batchFunction = (sources: ReadonlyArray<SomeTestSource>) => {
const someTestResult: SomeTestResult = {
someTestResultProp: "Hello"
};
return sources.map(source => someTestResult);
};
const asyncBatchFunction = async (sources: ReadonlyArray<SomeTestSource>) => {
return new Promise<SomeTestResult[]>(resolve => {
const res = [
@@ -27,19 +35,35 @@ const asyncBatchFunction = async (sources: ReadonlyArray<SomeTestSource>) => {
});
};
const asyncBatchFunctionWhenTReturnIsArray = async (
sources: ReadonlyArray<SomeTestSource>
) => {
const sourceBatches = sources.map(() => {
return new Promise<SomeTestResult[]>(resolve => {
const res = [
{
someTestResultProp: ""
}
];
resolve(res);
});
});
return Promise.all(sourceBatches);
};
// $ExpectType ResolverFunction<SomeTestSource, any, any, SomeTestResult>
const withSourceAndResultTyped = createBatchResolver<
SomeTestSource,
SomeTestResult
>((sources, _, __) => {
return sources.map(source => {
const res: SomeTestResult = {
someTestResultProp: ""
};
// $ExpectType ReadonlyArray<SomeTestSource>
const verifySources = sources;
return res;
});
return batchFunction(sources);
});
// $ExpectType ResolverFunction<SomeTestSource, any, any, SomeTestResult>
const withSourceAndResultTypedAsPromise = createBatchResolver<
SomeTestSource,
SomeTestResult
@@ -50,6 +74,7 @@ const withSourceAndResultTypedAsPromise = createBatchResolver<
return result;
});
// $ExpectType ResolverFunction<SomeTestSource, SomeTestArgs, any, SomeTestResult>
const withSourceAndArgsAndResultTyped = createBatchResolver<
SomeTestSource,
SomeTestResult,
@@ -64,6 +89,7 @@ const withSourceAndArgsAndResultTyped = createBatchResolver<
return result;
});
// $ExpectType ResolverFunction<SomeTestSource, SomeTestArgs, SomeTestContext, SomeTestResult>
const withSourceAndArgsAndContextTyped = createBatchResolver<
SomeTestSource,
SomeTestResult,
@@ -80,3 +106,13 @@ const withSourceAndArgsAndContextTyped = createBatchResolver<
const result = await asyncBatchFunction(sources);
return result;
});
// $ExpectType ResolverFunction<SomeTestSource, any, any, SomeTestResult[]>
const withResultIsArray = createBatchResolver<SomeTestSource, SomeTestResult[]>(
(sources, _, __) => {
// $ExpectType ReadonlyArray<SomeTestSource>
const verifySources = sources;
return asyncBatchFunctionWhenTReturnIsArray(sources);
}
);