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mock unions and interfaces #102

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Aug 11, 2016
Merged

mock unions and interfaces #102

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12 changes: 10 additions & 2 deletions src/mock.js
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Original file line number Diff line number Diff line change
Expand Up @@ -154,11 +154,19 @@ function addMockFunctionsToSchema({ schema, mocks = {}, preserveResolvers = fals
// XXX we recommend a generic way for resolve type here, which is defining
// typename on the object.
if (fieldType instanceof GraphQLUnionType) {
return { typename: getRandomElement(fieldType.getTypes()) };
const randomType = getRandomElement(fieldType.getTypes());
return {
typename: randomType,
...mockType(randomType)(...args),
};
}
if (fieldType instanceof GraphQLInterfaceType) {
const possibleTypes = schema.getPossibleTypes(fieldType);
return { typename: getRandomElement(possibleTypes) };
const randomType = getRandomElement(possibleTypes);
return {
typename: randomType,
...mockType(randomType)(...args),
};
}
if (fieldType instanceof GraphQLEnumType) {
return getRandomElement(fieldType.getValues()).value;
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7 changes: 5 additions & 2 deletions test/testMocking.js
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Expand Up @@ -140,6 +140,8 @@ describe('Mock', () => {
}`;
const mockMap = {
Int: () => 12345,
Bird: () => ({ returnInt: () => 54321 }),
Bee: () => ({ returnInt: () => 54321 }),
};
return mockServer(shorthand, mockMap).query(testQuery).then((res) => {
expect(res.data.returnInt).to.equal(12345);
Expand All @@ -148,8 +150,9 @@ describe('Mock', () => {
expect(res.data.returnString).to.be.a('string');
expect(res.data.returnID).to.be.a('string');
// tests that resolveType is correctly set for unions and interfaces
expect(res.data.returnBirdsAndBees[0].returnInt).to.equal(12345);
expect(res.data.returnBirdsAndBees[1].returnInt).to.equal(12345);
// and that the correct mock function is used
expect(res.data.returnBirdsAndBees[0].returnInt).to.equal(54321);
expect(res.data.returnBirdsAndBees[1].returnInt).to.equal(54321);
});
});
it('does not mask resolveType functions if you tell it not to', () => {
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