Check converion error propagation

piotrmurach · Apr 3, 2020 · 7fd52a4 · 7fd52a4
1 parent c530519
commit 7fd52a4
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/spec/unit/param_conversion_spec.rb b/spec/unit/param_conversion_spec.rb
@@ -7,6 +7,15 @@
     expect(described_class[param, "12"]).to eq(12)
   end
 
+  it "fails to convert parameter value to expected type" do
+    param = TTY::Option::Parameter::Argument.create(:foo, convert: :int)
+
+    expect {
+      described_class[param, "bar"]
+    }.to raise_error(TTY::Option::InvalidConversionArgument,
+                    "Invalid value of \"bar\" for :int conversion")
+  end
+
   it "converts parameter value to expected type with a block" do
     param = TTY::Option::Parameter::Argument.create(:foo,
                                                     convert: ->(val) { val.to_i })