Add more function guard tests for types/traits

master
Sven Slootweg 6 years ago
parent 98fbf1d556
commit fc289ba75e

@ -64,4 +64,61 @@ describe("function guards", () => {
guardedFunction("hello world"); guardedFunction("hello world");
}); });
let SomeType = dm.createType("SomeType", {
value: dm.string()
});
let guardedTypeFunction = dm.guard([SomeType], dm.nothing(), function (instance) {
expect(instance.value).to.equal("foo");
});
it("should allow correct instances for a type rule", () => {
guardedTypeFunction(SomeType({
value: "foo"
}));
});
it("should reject other values for that rule", () => {
expect(() => {
guardedTypeFunction("hello world");
}).to.throw("Expected an instance of SomeType, got a string instead");
});
let SomeTraitType = dm.createType("SomeTraitType", {
value: dm.string()
});
let SomeTrait = dm.createTrait("SomeTrait", {
traitValue: dm.string()
});
SomeTraitType.implements(SomeTrait, {
traitValue: "SomeTraitType"
});
let guardedTraitFunction = dm.guard([SomeTrait], dm.nothing(), function (instance) {
expect(instance.value).to.equal("foo");
expect(instance.traitValue).to.equal("SomeTraitType");
});
it("should allow correct instances for a trait rule", () => {
guardedTraitFunction(SomeTraitType({
value: "foo"
}));
});
it ("should reject instances that do not have the trait", () => {
expect(() => {
guardedTraitFunction(SomeType({
value: "foo"
}));
}).to.throw("Expected object of a type with the SomeTrait trait, got an instance of SomeType instead");
});
it("should reject other values for that rule", () => {
expect(() => {
guardedTraitFunction("hello world");
}).to.throw("Expected object of a type with the SomeTrait trait, got a string instead");
});
}); });

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