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Smarter handling of stub fallback

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This commit is contained in:
Michael Miller 2022-03-15 22:46:43 -06:00
parent 01fc91e854
commit 332ab1cebc
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4 changed files with 113 additions and 27 deletions
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48
spec/spectator/mocks/null_double_spec.cr
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@ -34,6 +34,30 @@ Spectator.describe Spectator::NullDouble do
end
end
context "with abstract stubs and return type annotations" do
Spectator::NullDouble.define(TestDouble) do
abstract_stub abstract def foo(value) : String
end
let(arguments) { Spectator::Arguments.capture(/foo/) }
let(stub) { Spectator::ValueStub.new(:foo, "bar", arguments).as(Spectator::Stub) }
subject(dbl) { TestDouble.new([stub]) }
it "enforces the return type" do
expect(dbl.foo("foobar")).to compile_as(String)
end
it "raises on non-matching arguments" do
expect { dbl.foo("bar") }.to raise_error(TypeCastError, /String/)
end
it "raises on non-matching stub" do
stub = Spectator::ValueStub.new(:foo, 42, arguments).as(Spectator::Stub)
dbl._spectator_define_stub(stub)
expect { dbl.foo("foobar") }.to raise_error(TypeCastError, /String/)
end
end
context "with common object methods" do
subject(dbl) do
EmptyDouble.new([
@ -102,6 +126,7 @@ Spectator.describe Spectator::NullDouble do
io = IO::Memory.new
pp = PrettyPrint.new(io)
aggregate_failures do
# Methods that would cause type cast errors are omitted from this list.
expect_null_double(dbl, dbl.!=(42))
expect_null_double(dbl, dbl.!~(42))
expect_null_double(dbl, dbl.==(42))
@ -111,21 +136,10 @@ Spectator.describe Spectator::NullDouble do
expect_null_double(dbl, dbl.dup)
expect_null_double(dbl, dbl.hash(42))
expect_null_double(dbl, dbl.hash)
# expect(dbl.in?(42)).to be(dbl)
# expect(dbl.in?(1, 2, 3)).to be(dbl)
expect_null_double(dbl, dbl.inspect)
expect_null_double(dbl, dbl.itself)
expect_null_double(dbl, dbl.not_nil!)
expect_null_double(dbl, dbl.pretty_inspect)
expect_null_double(dbl, dbl.tap { nil })
expect_null_double(dbl, dbl.to_json)
expect_null_double(dbl, dbl.to_pretty_json)
expect_null_double(dbl, dbl.to_s)
expect_null_double(dbl, dbl.to_yaml)
expect_null_double(dbl, dbl.try { nil })
# expect(dbl.object_id).to be(dbl)
# expect(dbl.same?(dbl)).to be(dbl)
# expect(dbl.same?(nil)).to be(dbl)
end
end
end
@ -135,7 +149,7 @@ Spectator.describe Spectator::NullDouble do
context "without common object methods" do
Spectator::NullDouble.define(TestDouble) do
abstract_stub abstract def foo(value) : String
abstract_stub abstract def foo(value)
end
let(stub) { Spectator::ValueStub.new(:foo, "bar", arguments).as(Spectator::Stub) }
@ -152,10 +166,6 @@ Spectator.describe Spectator::NullDouble do
it "returns self when argument count doesn't match" do
expect_null_double(dbl, dbl.foo)
end
it "has a union return type with self" do
expect(dbl.foo("foobar")).to compile_as(String | TestDouble)
end
end
context "with common object methods" do
@ -167,7 +177,7 @@ Spectator.describe Spectator::NullDouble do
subject(dbl) { TestDouble.new([stub]) }
it "returns the response when constraint satisfied" do
expect(dbl.hash("foobar")).to eq(true)
expect(dbl.hash("foobar")).to eq(12345)
end
it "returns self when constraint unsatisfied" do
@ -177,10 +187,6 @@ Spectator.describe Spectator::NullDouble do
it "returns self when argument count doesn't match" do
expect_null_double(dbl, dbl.hash)
end
it "has a union return type with self" do
expect(dbl.hash("foobar")).to compile_as(Int32 | TestDouble)
end
end
end