| package main |
| |
| import ( |
| "fmt" |
| "path/filepath" |
| "runtime" |
| "strings" |
| "testing" |
| ) |
| |
| const testFixture = "fixtures/foo.go" |
| |
| func TestParseEmptyInterface(t *testing.T) { |
| pkg, err := Parse(testFixture, "Fooer") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| assertName(t, "foo", pkg.Name) |
| assertNum(t, 0, len(pkg.Functions)) |
| } |
| |
| func TestParseNonInterfaceType(t *testing.T) { |
| _, err := Parse(testFixture, "wobble") |
| if _, ok := err.(errUnexpectedType); !ok { |
| t.Fatal("expected type error when parsing non-interface type") |
| } |
| } |
| |
| func TestParseWithOneFunction(t *testing.T) { |
| pkg, err := Parse(testFixture, "Fooer2") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| assertName(t, "foo", pkg.Name) |
| assertNum(t, 1, len(pkg.Functions)) |
| assertName(t, "Foo", pkg.Functions[0].Name) |
| assertNum(t, 0, len(pkg.Functions[0].Args)) |
| assertNum(t, 0, len(pkg.Functions[0].Returns)) |
| } |
| |
| func TestParseWithMultipleFuncs(t *testing.T) { |
| pkg, err := Parse(testFixture, "Fooer3") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| assertName(t, "foo", pkg.Name) |
| assertNum(t, 6, len(pkg.Functions)) |
| |
| f := pkg.Functions[0] |
| assertName(t, "Foo", f.Name) |
| assertNum(t, 0, len(f.Args)) |
| assertNum(t, 0, len(f.Returns)) |
| |
| f = pkg.Functions[1] |
| assertName(t, "Bar", f.Name) |
| assertNum(t, 1, len(f.Args)) |
| assertNum(t, 0, len(f.Returns)) |
| arg := f.Args[0] |
| assertName(t, "a", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| |
| f = pkg.Functions[2] |
| assertName(t, "Baz", f.Name) |
| assertNum(t, 1, len(f.Args)) |
| assertNum(t, 1, len(f.Returns)) |
| arg = f.Args[0] |
| assertName(t, "a", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| arg = f.Returns[0] |
| assertName(t, "err", arg.Name) |
| assertName(t, "error", arg.ArgType) |
| |
| f = pkg.Functions[3] |
| assertName(t, "Qux", f.Name) |
| assertNum(t, 2, len(f.Args)) |
| assertNum(t, 2, len(f.Returns)) |
| arg = f.Args[0] |
| assertName(t, "a", f.Args[0].Name) |
| assertName(t, "string", f.Args[0].ArgType) |
| arg = f.Args[1] |
| assertName(t, "b", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| arg = f.Returns[0] |
| assertName(t, "val", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| arg = f.Returns[1] |
| assertName(t, "err", arg.Name) |
| assertName(t, "error", arg.ArgType) |
| |
| f = pkg.Functions[4] |
| assertName(t, "Wobble", f.Name) |
| assertNum(t, 0, len(f.Args)) |
| assertNum(t, 1, len(f.Returns)) |
| arg = f.Returns[0] |
| assertName(t, "w", arg.Name) |
| assertName(t, "*wobble", arg.ArgType) |
| |
| f = pkg.Functions[5] |
| assertName(t, "Wiggle", f.Name) |
| assertNum(t, 0, len(f.Args)) |
| assertNum(t, 1, len(f.Returns)) |
| arg = f.Returns[0] |
| assertName(t, "w", arg.Name) |
| assertName(t, "wobble", arg.ArgType) |
| } |
| |
| func TestParseWithUnamedReturn(t *testing.T) { |
| _, err := Parse(testFixture, "Fooer4") |
| if !strings.HasSuffix(err.Error(), errBadReturn.Error()) { |
| t.Fatalf("expected ErrBadReturn, got %v", err) |
| } |
| } |
| |
| func TestEmbeddedInterface(t *testing.T) { |
| pkg, err := Parse(testFixture, "Fooer5") |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| assertName(t, "foo", pkg.Name) |
| assertNum(t, 2, len(pkg.Functions)) |
| |
| f := pkg.Functions[0] |
| assertName(t, "Foo", f.Name) |
| assertNum(t, 0, len(f.Args)) |
| assertNum(t, 0, len(f.Returns)) |
| |
| f = pkg.Functions[1] |
| assertName(t, "Boo", f.Name) |
| assertNum(t, 2, len(f.Args)) |
| assertNum(t, 2, len(f.Returns)) |
| |
| arg := f.Args[0] |
| assertName(t, "a", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| |
| arg = f.Args[1] |
| assertName(t, "b", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| |
| arg = f.Returns[0] |
| assertName(t, "s", arg.Name) |
| assertName(t, "string", arg.ArgType) |
| |
| arg = f.Returns[1] |
| assertName(t, "err", arg.Name) |
| assertName(t, "error", arg.ArgType) |
| } |
| |
| func assertName(t *testing.T, expected, actual string) { |
| if expected != actual { |
| fatalOut(t, fmt.Sprintf("expected name to be `%s`, got: %s", expected, actual)) |
| } |
| } |
| |
| func assertNum(t *testing.T, expected, actual int) { |
| if expected != actual { |
| fatalOut(t, fmt.Sprintf("expected number to be %d, got: %d", expected, actual)) |
| } |
| } |
| |
| func fatalOut(t *testing.T, msg string) { |
| _, file, ln, _ := runtime.Caller(2) |
| t.Fatalf("%s:%d: %s", filepath.Base(file), ln, msg) |
| } |