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package parser
import (
"testing"
)
func TestParseFuncCallSuccess(t *testing.T) {
// func without args
testParseFuncCallSuccess(t, "f()", "streamf(qw422016)")
// func with args
testParseFuncCallSuccess(t, "Foo(a, b)", "StreamFoo(qw422016, a, b)")
// method without args
testParseFuncCallSuccess(t, "a.f()", "a.streamf(qw422016)")
// method with args
testParseFuncCallSuccess(t, "a.f(xx)", "a.streamf(qw422016, xx)")
// chained method
testParseFuncCallSuccess(t, "foo.bar.Baz(x, y)", "foo.bar.StreamBaz(qw422016, x, y)")
// complex args
testParseFuncCallSuccess(t, `as.ffs.SS(
func(x int, y string) {
panic("foobar")
},
map[string]int{
"foo":1,
"bar":2,
},
qawe)`,
`as.ffs.StreamSS(qw422016,
func(x int, y string) {
panic("foobar")
},
map[string]int{
"foo":1,
"bar":2,
},
qawe)`)
}
func TestParseFuncCallFailure(t *testing.T) {
testParseFuncCallFailure(t, "")
// non-func
testParseFuncCallFailure(t, "foobar")
testParseFuncCallFailure(t, "a, b, c")
testParseFuncCallFailure(t, "{}")
testParseFuncCallFailure(t, "(a)")
testParseFuncCallFailure(t, "(f())")
// inline func
testParseFuncCallFailure(t, "func() {}()")
testParseFuncCallFailure(t, "func a() {}()")
// nonempty tail after func call
testParseFuncCallFailure(t, "f(); f1()")
testParseFuncCallFailure(t, "f()\nf1()")
testParseFuncCallFailure(t, "f()\n for {}")
}
func testParseFuncCallFailure(t *testing.T, s string) {
_, err := parseFuncCall([]byte(s))
if err == nil {
t.Fatalf("expecting non-nil error when parsing %q", s)
}
}
func testParseFuncCallSuccess(t *testing.T, s, callStream string) {
f, err := parseFuncCall([]byte(s))
if err != nil {
t.Fatalf("unexpected error when parsing %q: %s", s, err)
}
cs := f.CallStream("qw422016")
if cs != callStream {
t.Fatalf("unexpected CallStream: %q. Expecting %q. s=%q", cs, callStream, s)
}
}
func TestParseFuncDefSuccess(t *testing.T) {
// private func without args
testParseFuncDefSuccess(t, "xx()", "xx() string",
"streamxx(qw422016 *qt422016.Writer)", "streamxx(qw422016)",
"writexx(qq422016 qtio422016.Writer)", "writexx(qq422016)")
// public func with a single arg
testParseFuncDefSuccess(t, "F(a int)", "F(a int) string",
"StreamF(qw422016 *qt422016.Writer, a int)", "StreamF(qw422016, a)",
"WriteF(qq422016 qtio422016.Writer, a int)", "WriteF(qq422016, a)")
// public method without args
testParseFuncDefSuccess(t, "(f *foo) M()", "(f *foo) M() string",
"(f *foo) StreamM(qw422016 *qt422016.Writer)", "f.StreamM(qw422016)",
"(f *foo) WriteM(qq422016 qtio422016.Writer)", "f.WriteM(qq422016)")
// private method with three args
testParseFuncDefSuccess(t, "(f *Foo) bar(x, y string, z int)", "(f *Foo) bar(x, y string, z int) string",
"(f *Foo) streambar(qw422016 *qt422016.Writer, x, y string, z int)", "f.streambar(qw422016, x, y, z)",
"(f *Foo) writebar(qq422016 qtio422016.Writer, x, y string, z int)", "f.writebar(qq422016, x, y, z)")
// method with complex args
testParseFuncDefSuccess(t, "(t TPL) Head(h1, h2 func(x, y int), h3 map[int]struct{})", "(t TPL) Head(h1, h2 func(x, y int), h3 map[int]struct{}) string",
"(t TPL) StreamHead(qw422016 *qt422016.Writer, h1, h2 func(x, y int), h3 map[int]struct{})", "t.StreamHead(qw422016, h1, h2, h3)",
"(t TPL) WriteHead(qq422016 qtio422016.Writer, h1, h2 func(x, y int), h3 map[int]struct{})", "t.WriteHead(qq422016, h1, h2, h3)")
// method with variadic arguments
testParseFuncDefSuccess(t, "(t TPL) Head(name string, num int, otherNames ...string)", "(t TPL) Head(name string, num int, otherNames ...string) string",
"(t TPL) StreamHead(qw422016 *qt422016.Writer, name string, num int, otherNames ...string)", "t.StreamHead(qw422016, name, num, otherNames...)",
"(t TPL) WriteHead(qq422016 qtio422016.Writer, name string, num int, otherNames ...string)", "t.WriteHead(qq422016, name, num, otherNames...)")
}
func TestParseFuncDefFailure(t *testing.T) {
testParseFuncDefFailure(t, "")
// invalid syntax
testParseFuncDefFailure(t, "foobar")
testParseFuncDefFailure(t, "f() {")
testParseFuncDefFailure(t, "for {}")
// missing func name
testParseFuncDefFailure(t, "()")
testParseFuncDefFailure(t, "(a int, b string)")
// missing method name
testParseFuncDefFailure(t, "(x XX) ()")
testParseFuncDefFailure(t, "(x XX) (y, z string)")
// func with return values
testParseFuncDefFailure(t, "f() string")
testParseFuncDefFailure(t, "f() (int, string)")
testParseFuncDefFailure(t, "(x XX) f() string")
testParseFuncDefFailure(t, "(x XX) f(a int) (int, string)")
}
func testParseFuncDefFailure(t *testing.T, s string) {
f, err := parseFuncDef([]byte(s))
if err == nil {
t.Fatalf("expecting error when parsing %q. got %#v", s, f)
}
}
func testParseFuncDefSuccess(t *testing.T, s, defString, defStream, callStream, defWrite, callWrite string) {
f, err := parseFuncDef([]byte(s))
if err != nil {
t.Fatalf("cannot parse %q: %s", s, err)
}
ds := f.DefString()
if ds != defString {
t.Fatalf("unexpected DefString: %q. Expecting %q. s=%q", ds, defString, s)
}
ds = f.DefStream("qw422016")
if ds != defStream {
t.Fatalf("unexpected DefStream: %q. Expecting %q. s=%q", ds, defStream, s)
}
cs := f.CallStream("qw422016")
if cs != callStream {
t.Fatalf("unexpected CallStream: %q. Expecting %q. s=%q", cs, callStream, s)
}
dw := f.DefWrite("qq422016")
if dw != defWrite {
t.Fatalf("unexpected DefWrite: %q. Expecting %q. s=%q", dw, defWrite, s)
}
cw := f.CallWrite("qq422016")
if cw != callWrite {
t.Fatalf("unexpected CallWrite: %q. Expecting %q. s=%q", cw, callWrite, s)
}
}
|
