From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libgo/go/reflect/all_test.go | 1392 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1392 insertions(+) create mode 100644 libgo/go/reflect/all_test.go (limited to 'libgo/go/reflect/all_test.go') diff --git a/libgo/go/reflect/all_test.go b/libgo/go/reflect/all_test.go new file mode 100644 index 000000000..320f44203 --- /dev/null +++ b/libgo/go/reflect/all_test.go @@ -0,0 +1,1392 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package reflect_test + +import ( + "container/vector" + "fmt" + "io" + "os" + . "reflect" + "testing" + "unsafe" +) + +type integer int +type T struct { + a int + b float64 + c string + d *int +} + +type pair struct { + i interface{} + s string +} + +func isDigit(c uint8) bool { return '0' <= c && c <= '9' } + +func assert(t *testing.T, s, want string) { + if s != want { + t.Errorf("have %#q want %#q", s, want) + } +} + +func typestring(i interface{}) string { return Typeof(i).String() } + +var typeTests = []pair{ + {struct{ x int }{}, "int"}, + {struct{ x int8 }{}, "int8"}, + {struct{ x int16 }{}, "int16"}, + {struct{ x int32 }{}, "int32"}, + {struct{ x int64 }{}, "int64"}, + {struct{ x uint }{}, "uint"}, + {struct{ x uint8 }{}, "uint8"}, + {struct{ x uint16 }{}, "uint16"}, + {struct{ x uint32 }{}, "uint32"}, + {struct{ x uint64 }{}, "uint64"}, + {struct{ x float32 }{}, "float32"}, + {struct{ x float64 }{}, "float64"}, + {struct{ x int8 }{}, "int8"}, + {struct{ x (**int8) }{}, "**int8"}, + {struct{ x (**integer) }{}, "**reflect_test.integer"}, + {struct{ x ([32]int32) }{}, "[32]int32"}, + {struct{ x ([]int8) }{}, "[]int8"}, + {struct{ x (map[string]int32) }{}, "map[string] int32"}, + {struct{ x (chan<- string) }{}, "chan<- string"}, + {struct { + x struct { + c chan *int32 + d float32 + } + }{}, + "struct { c chan *int32; d float32 }", + }, + {struct{ x (func(a int8, b int32)) }{}, "func(int8, int32)"}, + {struct { + x struct { + c func(chan *integer, *int8) + } + }{}, + "struct { c func(chan *reflect_test.integer, *int8) }", + }, + {struct { + x struct { + a int8 + b int32 + } + }{}, + "struct { a int8; b int32 }", + }, + {struct { + x struct { + a int8 + b int8 + c int32 + } + }{}, + "struct { a int8; b int8; c int32 }", + }, + {struct { + x struct { + a int8 + b int8 + c int8 + d int32 + } + }{}, + "struct { a int8; b int8; c int8; d int32 }", + }, + {struct { + x struct { + a int8 + b int8 + c int8 + d int8 + e int32 + } + }{}, + "struct { a int8; b int8; c int8; d int8; e int32 }", + }, + {struct { + x struct { + a int8 + b int8 + c int8 + d int8 + e int8 + f int32 + } + }{}, + "struct { a int8; b int8; c int8; d int8; e int8; f int32 }", + }, + {struct { + x struct { + a int8 "hi there" + } + }{}, + `struct { a int8 "hi there" }`, + }, + {struct { + x struct { + a int8 "hi \x00there\t\n\"\\" + } + }{}, + `struct { a int8 "hi \x00there\t\n\"\\" }`, + }, + {struct { + x struct { + f func(args ...int) + } + }{}, + "struct { f func(...int) }", + }, + {struct { + x (interface { + a(func(func(int) int) func(func(int)) int) + b() + }) + }{}, + "interface { a(func(func(int) int) func(func(int)) int); b() }", + }, +} + +var valueTests = []pair{ + {(int8)(0), "8"}, + {(int16)(0), "16"}, + {(int32)(0), "32"}, + {(int64)(0), "64"}, + {(uint8)(0), "8"}, + {(uint16)(0), "16"}, + {(uint32)(0), "32"}, + {(uint64)(0), "64"}, + {(float32)(0), "256.25"}, + {(float64)(0), "512.125"}, + {(string)(""), "stringy cheese"}, + {(bool)(false), "true"}, + {(*int8)(nil), "*int8(0)"}, + {(**int8)(nil), "**int8(0)"}, + {[5]int32{}, "[5]int32{0, 0, 0, 0, 0}"}, + {(**integer)(nil), "**reflect_test.integer(0)"}, + {(map[string]int32)(nil), "map[string] int32{}"}, + {(chan<- string)(nil), "chan<- string"}, + {struct { + c chan *int32 + d float32 + }{}, + "struct { c chan *int32; d float32 }{chan *int32, 0}", + }, + {(func(a int8, b int32))(nil), "func(int8, int32)(0)"}, + {struct{ c func(chan *integer, *int8) }{}, + "struct { c func(chan *reflect_test.integer, *int8) }{func(chan *reflect_test.integer, *int8)(0)}", + }, + {struct { + a int8 + b int32 + }{}, + "struct { a int8; b int32 }{0, 0}", + }, + {struct { + a int8 + b int8 + c int32 + }{}, + "struct { a int8; b int8; c int32 }{0, 0, 0}", + }, +} + +func testType(t *testing.T, i int, typ Type, want string) { + s := typ.String() + if s != want { + t.Errorf("#%d: have %#q, want %#q", i, s, want) + } +} + +func TestTypes(t *testing.T) { + for i, tt := range typeTests { + testType(t, i, NewValue(tt.i).(*StructValue).Field(0).Type(), tt.s) + } +} + +func TestSet(t *testing.T) { + for i, tt := range valueTests { + v := NewValue(tt.i) + switch v := v.(type) { + case *IntValue: + switch v.Type().Kind() { + case Int: + v.Set(132) + case Int8: + v.Set(8) + case Int16: + v.Set(16) + case Int32: + v.Set(32) + case Int64: + v.Set(64) + } + case *UintValue: + switch v.Type().Kind() { + case Uint: + v.Set(132) + case Uint8: + v.Set(8) + case Uint16: + v.Set(16) + case Uint32: + v.Set(32) + case Uint64: + v.Set(64) + } + case *FloatValue: + switch v.Type().Kind() { + case Float32: + v.Set(256.25) + case Float64: + v.Set(512.125) + } + case *ComplexValue: + switch v.Type().Kind() { + case Complex64: + v.Set(532.125 + 10i) + case Complex128: + v.Set(564.25 + 1i) + } + case *StringValue: + v.Set("stringy cheese") + case *BoolValue: + v.Set(true) + } + s := valueToString(v) + if s != tt.s { + t.Errorf("#%d: have %#q, want %#q", i, s, tt.s) + } + } +} + +func TestSetValue(t *testing.T) { + for i, tt := range valueTests { + v := NewValue(tt.i) + switch v := v.(type) { + case *IntValue: + switch v.Type().Kind() { + case Int: + v.SetValue(NewValue(int(132))) + case Int8: + v.SetValue(NewValue(int8(8))) + case Int16: + v.SetValue(NewValue(int16(16))) + case Int32: + v.SetValue(NewValue(int32(32))) + case Int64: + v.SetValue(NewValue(int64(64))) + } + case *UintValue: + switch v.Type().Kind() { + case Uint: + v.SetValue(NewValue(uint(132))) + case Uint8: + v.SetValue(NewValue(uint8(8))) + case Uint16: + v.SetValue(NewValue(uint16(16))) + case Uint32: + v.SetValue(NewValue(uint32(32))) + case Uint64: + v.SetValue(NewValue(uint64(64))) + } + case *FloatValue: + switch v.Type().Kind() { + case Float32: + v.SetValue(NewValue(float32(256.25))) + case Float64: + v.SetValue(NewValue(512.125)) + } + case *ComplexValue: + switch v.Type().Kind() { + case Complex64: + v.SetValue(NewValue(complex64(532.125 + 10i))) + case Complex128: + v.SetValue(NewValue(complex128(564.25 + 1i))) + } + + case *StringValue: + v.SetValue(NewValue("stringy cheese")) + case *BoolValue: + v.SetValue(NewValue(true)) + } + s := valueToString(v) + if s != tt.s { + t.Errorf("#%d: have %#q, want %#q", i, s, tt.s) + } + } +} + +var _i = 7 + +var valueToStringTests = []pair{ + {123, "123"}, + {123.5, "123.5"}, + {byte(123), "123"}, + {"abc", "abc"}, + {T{123, 456.75, "hello", &_i}, "reflect_test.T{123, 456.75, hello, *int(&7)}"}, + {new(chan *T), "*chan *reflect_test.T(&chan *reflect_test.T)"}, + {[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"}, + {&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[10]int(&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"}, + {[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"}, + {&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[]int(&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"}, +} + +func TestValueToString(t *testing.T) { + for i, test := range valueToStringTests { + s := valueToString(NewValue(test.i)) + if s != test.s { + t.Errorf("#%d: have %#q, want %#q", i, s, test.s) + } + } +} + +func TestArrayElemSet(t *testing.T) { + v := NewValue([10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}) + v.(*ArrayValue).Elem(4).(*IntValue).Set(123) + s := valueToString(v) + const want = "[10]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}" + if s != want { + t.Errorf("[10]int: have %#q want %#q", s, want) + } + + v = NewValue([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}) + v.(*SliceValue).Elem(4).(*IntValue).Set(123) + s = valueToString(v) + const want1 = "[]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}" + if s != want1 { + t.Errorf("[]int: have %#q want %#q", s, want1) + } +} + +func TestPtrPointTo(t *testing.T) { + var ip *int32 + var i int32 = 1234 + vip := NewValue(&ip) + vi := NewValue(i) + vip.(*PtrValue).Elem().(*PtrValue).PointTo(vi) + if *ip != 1234 { + t.Errorf("got %d, want 1234", *ip) + } + + ip = nil + vp := NewValue(ip).(*PtrValue) + vp.PointTo(vp.Elem()) + if ip != nil { + t.Errorf("got non-nil (%p), want nil", ip) + } +} + +func TestPtrSetNil(t *testing.T) { + var i int32 = 1234 + ip := &i + vip := NewValue(&ip) + vip.(*PtrValue).Elem().(*PtrValue).Set(nil) + if ip != nil { + t.Errorf("got non-nil (%d), want nil", *ip) + } +} + +func TestMapSetNil(t *testing.T) { + m := make(map[string]int) + vm := NewValue(&m) + vm.(*PtrValue).Elem().(*MapValue).Set(nil) + if m != nil { + t.Errorf("got non-nil (%p), want nil", m) + } +} + + +func TestAll(t *testing.T) { + testType(t, 1, Typeof((int8)(0)), "int8") + testType(t, 2, Typeof((*int8)(nil)).(*PtrType).Elem(), "int8") + + typ := Typeof((*struct { + c chan *int32 + d float32 + })(nil)) + testType(t, 3, typ, "*struct { c chan *int32; d float32 }") + etyp := typ.(*PtrType).Elem() + testType(t, 4, etyp, "struct { c chan *int32; d float32 }") + styp := etyp.(*StructType) + f := styp.Field(0) + testType(t, 5, f.Type, "chan *int32") + + f, present := styp.FieldByName("d") + if !present { + t.Errorf("FieldByName says present field is absent") + } + testType(t, 6, f.Type, "float32") + + f, present = styp.FieldByName("absent") + if present { + t.Errorf("FieldByName says absent field is present") + } + + typ = Typeof([32]int32{}) + testType(t, 7, typ, "[32]int32") + testType(t, 8, typ.(*ArrayType).Elem(), "int32") + + typ = Typeof((map[string]*int32)(nil)) + testType(t, 9, typ, "map[string] *int32") + mtyp := typ.(*MapType) + testType(t, 10, mtyp.Key(), "string") + testType(t, 11, mtyp.Elem(), "*int32") + + typ = Typeof((chan<- string)(nil)) + testType(t, 12, typ, "chan<- string") + testType(t, 13, typ.(*ChanType).Elem(), "string") + + // make sure tag strings are not part of element type + typ = Typeof(struct { + d []uint32 "TAG" + }{}).(*StructType).Field(0).Type + testType(t, 14, typ, "[]uint32") +} + +func TestInterfaceGet(t *testing.T) { + var inter struct { + e interface{} + } + inter.e = 123.456 + v1 := NewValue(&inter) + v2 := v1.(*PtrValue).Elem().(*StructValue).Field(0) + assert(t, v2.Type().String(), "interface { }") + i2 := v2.(*InterfaceValue).Interface() + v3 := NewValue(i2) + assert(t, v3.Type().String(), "float64") +} + +func TestInterfaceValue(t *testing.T) { + var inter struct { + e interface{} + } + inter.e = 123.456 + v1 := NewValue(&inter) + v2 := v1.(*PtrValue).Elem().(*StructValue).Field(0) + assert(t, v2.Type().String(), "interface { }") + v3 := v2.(*InterfaceValue).Elem() + assert(t, v3.Type().String(), "float64") + + i3 := v2.Interface() + if _, ok := i3.(float64); !ok { + t.Error("v2.Interface() did not return float64, got ", Typeof(i3)) + } +} + +func TestFunctionValue(t *testing.T) { + v := NewValue(func() {}) + if v.Interface() != v.Interface() { + t.Fatalf("TestFunction != itself") + } + assert(t, v.Type().String(), "func()") +} + +var appendTests = []struct { + orig, extra []int +}{ + {make([]int, 2, 4), []int{22}}, + {make([]int, 2, 4), []int{22, 33, 44}}, +} + +func TestAppend(t *testing.T) { + for i, test := range appendTests { + origLen, extraLen := len(test.orig), len(test.extra) + want := append(test.orig, test.extra...) + // Convert extra from []int to []Value. + e0 := make([]Value, len(test.extra)) + for j, e := range test.extra { + e0[j] = NewValue(e) + } + // Convert extra from []int to *SliceValue. + e1 := NewValue(test.extra).(*SliceValue) + // Test Append. + a0 := NewValue(test.orig).(*SliceValue) + have0 := Append(a0, e0...).Interface().([]int) + if !DeepEqual(have0, want) { + t.Errorf("Append #%d: have %v, want %v", i, have0, want) + } + // Check that the orig and extra slices were not modified. + if len(test.orig) != origLen { + t.Errorf("Append #%d origLen: have %v, want %v", i, len(test.orig), origLen) + } + if len(test.extra) != extraLen { + t.Errorf("Append #%d extraLen: have %v, want %v", i, len(test.extra), extraLen) + } + // Test AppendSlice. + a1 := NewValue(test.orig).(*SliceValue) + have1 := AppendSlice(a1, e1).Interface().([]int) + if !DeepEqual(have1, want) { + t.Errorf("AppendSlice #%d: have %v, want %v", i, have1, want) + } + // Check that the orig and extra slices were not modified. + if len(test.orig) != origLen { + t.Errorf("AppendSlice #%d origLen: have %v, want %v", i, len(test.orig), origLen) + } + if len(test.extra) != extraLen { + t.Errorf("AppendSlice #%d extraLen: have %v, want %v", i, len(test.extra), extraLen) + } + } +} + +func TestCopy(t *testing.T) { + a := []int{1, 2, 3, 4, 10, 9, 8, 7} + b := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44} + c := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44} + for i := 0; i < len(b); i++ { + if b[i] != c[i] { + t.Fatalf("b != c before test") + } + } + aa := NewValue(a).(*SliceValue) + ab := NewValue(b).(*SliceValue) + for tocopy := 1; tocopy <= 7; tocopy++ { + aa.SetLen(tocopy) + Copy(ab, aa) + aa.SetLen(8) + for i := 0; i < tocopy; i++ { + if a[i] != b[i] { + t.Errorf("(i) tocopy=%d a[%d]=%d, b[%d]=%d", + tocopy, i, a[i], i, b[i]) + } + } + for i := tocopy; i < len(b); i++ { + if b[i] != c[i] { + if i < len(a) { + t.Errorf("(ii) tocopy=%d a[%d]=%d, b[%d]=%d, c[%d]=%d", + tocopy, i, a[i], i, b[i], i, c[i]) + } else { + t.Errorf("(iii) tocopy=%d b[%d]=%d, c[%d]=%d", + tocopy, i, b[i], i, c[i]) + } + } else { + t.Logf("tocopy=%d elem %d is okay\n", tocopy, i) + } + } + } +} + +func TestBigUnnamedStruct(t *testing.T) { + b := struct{ a, b, c, d int64 }{1, 2, 3, 4} + v := NewValue(b) + b1 := v.Interface().(struct { + a, b, c, d int64 + }) + if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d { + t.Errorf("NewValue(%v).Interface().(*Big) = %v", b, b1) + } +} + +type big struct { + a, b, c, d, e int64 +} + +func TestBigStruct(t *testing.T) { + b := big{1, 2, 3, 4, 5} + v := NewValue(b) + b1 := v.Interface().(big) + if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d || b1.e != b.e { + t.Errorf("NewValue(%v).Interface().(big) = %v", b, b1) + } +} + +type Basic struct { + x int + y float32 +} + +type NotBasic Basic + +type DeepEqualTest struct { + a, b interface{} + eq bool +} + +var deepEqualTests = []DeepEqualTest{ + // Equalities + {1, 1, true}, + {int32(1), int32(1), true}, + {0.5, 0.5, true}, + {float32(0.5), float32(0.5), true}, + {"hello", "hello", true}, + {make([]int, 10), make([]int, 10), true}, + {&[3]int{1, 2, 3}, &[3]int{1, 2, 3}, true}, + {Basic{1, 0.5}, Basic{1, 0.5}, true}, + {os.Error(nil), os.Error(nil), true}, + {map[int]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, true}, + + // Inequalities + {1, 2, false}, + {int32(1), int32(2), false}, + {0.5, 0.6, false}, + {float32(0.5), float32(0.6), false}, + {"hello", "hey", false}, + {make([]int, 10), make([]int, 11), false}, + {&[3]int{1, 2, 3}, &[3]int{1, 2, 4}, false}, + {Basic{1, 0.5}, Basic{1, 0.6}, false}, + {Basic{1, 0}, Basic{2, 0}, false}, + {map[int]string{1: "one", 3: "two"}, map[int]string{2: "two", 1: "one"}, false}, + {map[int]string{1: "one", 2: "txo"}, map[int]string{2: "two", 1: "one"}, false}, + {map[int]string{1: "one"}, map[int]string{2: "two", 1: "one"}, false}, + {map[int]string{2: "two", 1: "one"}, map[int]string{1: "one"}, false}, + {nil, 1, false}, + {1, nil, false}, + + // Mismatched types + {1, 1.0, false}, + {int32(1), int64(1), false}, + {0.5, "hello", false}, + {[]int{1, 2, 3}, [3]int{1, 2, 3}, false}, + {&[3]interface{}{1, 2, 4}, &[3]interface{}{1, 2, "s"}, false}, + {Basic{1, 0.5}, NotBasic{1, 0.5}, false}, + {map[uint]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, false}, +} + +func TestDeepEqual(t *testing.T) { + for _, test := range deepEqualTests { + if r := DeepEqual(test.a, test.b); r != test.eq { + t.Errorf("DeepEqual(%v, %v) = %v, want %v", test.a, test.b, r, test.eq) + } + } +} + +func TestTypeof(t *testing.T) { + for _, test := range deepEqualTests { + v := NewValue(test.a) + if v == nil { + continue + } + typ := Typeof(test.a) + if typ != v.Type() { + t.Errorf("Typeof(%v) = %v, but NewValue(%v).Type() = %v", test.a, typ, test.a, v.Type()) + } + } +} + +type Recursive struct { + x int + r *Recursive +} + +func TestDeepEqualRecursiveStruct(t *testing.T) { + a, b := new(Recursive), new(Recursive) + *a = Recursive{12, a} + *b = Recursive{12, b} + if !DeepEqual(a, b) { + t.Error("DeepEqual(recursive same) = false, want true") + } +} + +type _Complex struct { + a int + b [3]*_Complex + c *string + d map[float64]float64 +} + +func TestDeepEqualComplexStruct(t *testing.T) { + m := make(map[float64]float64) + stra, strb := "hello", "hello" + a, b := new(_Complex), new(_Complex) + *a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m} + *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m} + if !DeepEqual(a, b) { + t.Error("DeepEqual(complex same) = false, want true") + } +} + +func TestDeepEqualComplexStructInequality(t *testing.T) { + m := make(map[float64]float64) + stra, strb := "hello", "helloo" // Difference is here + a, b := new(_Complex), new(_Complex) + *a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m} + *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m} + if DeepEqual(a, b) { + t.Error("DeepEqual(complex different) = true, want false") + } +} + + +func check2ndField(x interface{}, offs uintptr, t *testing.T) { + s := NewValue(x).(*StructValue) + f := s.Type().(*StructType).Field(1) + if f.Offset != offs { + t.Error("mismatched offsets in structure alignment:", f.Offset, offs) + } +} + +// Check that structure alignment & offsets viewed through reflect agree with those +// from the compiler itself. +func TestAlignment(t *testing.T) { + type T1inner struct { + a int + } + type T1 struct { + T1inner + f int + } + type T2inner struct { + a, b int + } + type T2 struct { + T2inner + f int + } + + x := T1{T1inner{2}, 17} + check2ndField(x, uintptr(unsafe.Pointer(&x.f))-uintptr(unsafe.Pointer(&x)), t) + + x1 := T2{T2inner{2, 3}, 17} + check2ndField(x1, uintptr(unsafe.Pointer(&x1.f))-uintptr(unsafe.Pointer(&x1)), t) +} + +type IsNiller interface { + IsNil() bool +} + +func Nil(a interface{}, t *testing.T) { + n := NewValue(a).(*StructValue).Field(0).(IsNiller) + if !n.IsNil() { + t.Errorf("%v should be nil", a) + } +} + +func NotNil(a interface{}, t *testing.T) { + n := NewValue(a).(*StructValue).Field(0).(IsNiller) + if n.IsNil() { + t.Errorf("value of type %v should not be nil", NewValue(a).Type().String()) + } +} + +func TestIsNil(t *testing.T) { + // These do not implement IsNil + doNotNil := []interface{}{int(0), float32(0), struct{ a int }{}} + for _, ts := range doNotNil { + ty := Typeof(ts) + v := MakeZero(ty) + if _, ok := v.(IsNiller); ok { + t.Errorf("%s is nilable; should not be", ts) + } + } + + // These do implement IsNil. + // Wrap in extra struct to hide interface type. + doNil := []interface{}{ + struct{ x *int }{}, + struct{ x interface{} }{}, + struct{ x map[string]int }{}, + struct{ x func() bool }{}, + struct{ x chan int }{}, + struct{ x []string }{}, + } + for _, ts := range doNil { + ty := Typeof(ts).(*StructType).Field(0).Type + v := MakeZero(ty) + if _, ok := v.(IsNiller); !ok { + t.Errorf("%s %T is not nilable; should be", ts, v) + } + } + + // Check the implementations + var pi struct { + x *int + } + Nil(pi, t) + pi.x = new(int) + NotNil(pi, t) + + var si struct { + x []int + } + Nil(si, t) + si.x = make([]int, 10) + NotNil(si, t) + + var ci struct { + x chan int + } + Nil(ci, t) + ci.x = make(chan int) + NotNil(ci, t) + + var mi struct { + x map[int]int + } + Nil(mi, t) + mi.x = make(map[int]int) + NotNil(mi, t) + + var ii struct { + x interface{} + } + Nil(ii, t) + ii.x = 2 + NotNil(ii, t) + + var fi struct { + x func(t *testing.T) + } + Nil(fi, t) + fi.x = TestIsNil + NotNil(fi, t) +} + +func TestInterfaceExtraction(t *testing.T) { + var s struct { + w io.Writer + } + + s.w = os.Stdout + v := Indirect(NewValue(&s)).(*StructValue).Field(0).Interface() + if v != s.w.(interface{}) { + t.Error("Interface() on interface: ", v, s.w) + } +} + +func TestInterfaceEditing(t *testing.T) { + // strings are bigger than one word, + // so the interface conversion allocates + // memory to hold a string and puts that + // pointer in the interface. + var i interface{} = "hello" + + // if i pass the interface value by value + // to NewValue, i should get a fresh copy + // of the value. + v := NewValue(i) + + // and setting that copy to "bye" should + // not change the value stored in i. + v.(*StringValue).Set("bye") + if i.(string) != "hello" { + t.Errorf(`Set("bye") changed i to %s`, i.(string)) + } + + // the same should be true of smaller items. + i = 123 + v = NewValue(i) + v.(*IntValue).Set(234) + if i.(int) != 123 { + t.Errorf("Set(234) changed i to %d", i.(int)) + } +} + +func TestNilPtrValueSub(t *testing.T) { + var pi *int + if pv := NewValue(pi).(*PtrValue); pv.Elem() != nil { + t.Error("NewValue((*int)(nil)).(*PtrValue).Elem() != nil") + } +} + +func TestMap(t *testing.T) { + m := map[string]int{"a": 1, "b": 2} + mv := NewValue(m).(*MapValue) + if n := mv.Len(); n != len(m) { + t.Errorf("Len = %d, want %d", n, len(m)) + } + keys := mv.Keys() + i := 0 + newmap := MakeMap(mv.Type().(*MapType)) + for k, v := range m { + // Check that returned Keys match keys in range. + // These aren't required to be in the same order, + // but they are in this implementation, which makes + // the test easier. + if i >= len(keys) { + t.Errorf("Missing key #%d %q", i, k) + } else if kv := keys[i].(*StringValue); kv.Get() != k { + t.Errorf("Keys[%d] = %q, want %q", i, kv.Get(), k) + } + i++ + + // Check that value lookup is correct. + vv := mv.Elem(NewValue(k)) + if vi := vv.(*IntValue).Get(); vi != int64(v) { + t.Errorf("Key %q: have value %d, want %d", k, vi, v) + } + + // Copy into new map. + newmap.SetElem(NewValue(k), NewValue(v)) + } + vv := mv.Elem(NewValue("not-present")) + if vv != nil { + t.Errorf("Invalid key: got non-nil value %s", valueToString(vv)) + } + + newm := newmap.Interface().(map[string]int) + if len(newm) != len(m) { + t.Errorf("length after copy: newm=%d, m=%d", newm, m) + } + + for k, v := range newm { + mv, ok := m[k] + if mv != v { + t.Errorf("newm[%q] = %d, but m[%q] = %d, %v", k, v, k, mv, ok) + } + } + + newmap.SetElem(NewValue("a"), nil) + v, ok := newm["a"] + if ok { + t.Errorf("newm[\"a\"] = %d after delete", v) + } + + mv = NewValue(&m).(*PtrValue).Elem().(*MapValue) + mv.Set(nil) + if m != nil { + t.Errorf("mv.Set(nil) failed") + } +} + +func TestChan(t *testing.T) { + for loop := 0; loop < 2; loop++ { + var c chan int + var cv *ChanValue + + // check both ways to allocate channels + switch loop { + case 1: + c = make(chan int, 1) + cv = NewValue(c).(*ChanValue) + case 0: + cv = MakeChan(Typeof(c).(*ChanType), 1) + c = cv.Interface().(chan int) + } + + // Send + cv.Send(NewValue(2)) + if i := <-c; i != 2 { + t.Errorf("reflect Send 2, native recv %d", i) + } + + // Recv + c <- 3 + if i := cv.Recv().(*IntValue).Get(); i != 3 { + t.Errorf("native send 3, reflect Recv %d", i) + } + + // TryRecv fail + val := cv.TryRecv() + if val != nil { + t.Errorf("TryRecv on empty chan: %s", valueToString(val)) + } + + // TryRecv success + c <- 4 + val = cv.TryRecv() + if val == nil { + t.Errorf("TryRecv on ready chan got nil") + } else if i := val.(*IntValue).Get(); i != 4 { + t.Errorf("native send 4, TryRecv %d", i) + } + + // TrySend fail + c <- 100 + ok := cv.TrySend(NewValue(5)) + i := <-c + if ok { + t.Errorf("TrySend on full chan succeeded: value %d", i) + } + + // TrySend success + ok = cv.TrySend(NewValue(6)) + if !ok { + t.Errorf("TrySend on empty chan failed") + } else { + if i = <-c; i != 6 { + t.Errorf("TrySend 6, recv %d", i) + } + } + + // Close + c <- 123 + cv.Close() + if cv.Closed() { + t.Errorf("closed too soon - 1") + } + if i := cv.Recv().(*IntValue).Get(); i != 123 { + t.Errorf("send 123 then close; Recv %d", i) + } + if cv.Closed() { + t.Errorf("closed too soon - 2") + } + if i := cv.Recv().(*IntValue).Get(); i != 0 { + t.Errorf("after close Recv %d", i) + } + if !cv.Closed() { + t.Errorf("not closed") + } + } + + // check creation of unbuffered channel + var c chan int + cv := MakeChan(Typeof(c).(*ChanType), 0) + c = cv.Interface().(chan int) + if cv.TrySend(NewValue(7)) { + t.Errorf("TrySend on sync chan succeeded") + } + if cv.TryRecv() != nil { + t.Errorf("TryRecv on sync chan succeeded") + } + + // len/cap + cv = MakeChan(Typeof(c).(*ChanType), 10) + c = cv.Interface().(chan int) + for i := 0; i < 3; i++ { + c <- i + } + if l, m := cv.Len(), cv.Cap(); l != len(c) || m != cap(c) { + t.Errorf("Len/Cap = %d/%d want %d/%d", l, m, len(c), cap(c)) + } + +} + +// Difficult test for function call because of +// implicit padding between arguments. +func dummy(b byte, c int, d byte) (i byte, j int, k byte) { + return b, c, d +} + +func TestFunc(t *testing.T) { + ret := NewValue(dummy).(*FuncValue).Call([]Value{NewValue(byte(10)), NewValue(20), NewValue(byte(30))}) + if len(ret) != 3 { + t.Fatalf("Call returned %d values, want 3", len(ret)) + } + + i := ret[0].(*UintValue).Get() + j := ret[1].(*IntValue).Get() + k := ret[2].(*UintValue).Get() + if i != 10 || j != 20 || k != 30 { + t.Errorf("Call returned %d, %d, %d; want 10, 20, 30", i, j, k) + } +} + +type Point struct { + x, y int +} + +func (p Point) Dist(scale int) int { return p.x*p.x*scale + p.y*p.y*scale } + +func TestMethod(t *testing.T) { + // Non-curried method of type. + p := Point{3, 4} + i := Typeof(p).Method(0).Func.Call([]Value{NewValue(p), NewValue(10)})[0].(*IntValue).Get() + if i != 250 { + t.Errorf("Type Method returned %d; want 250", i) + } + + i = Typeof(&p).Method(0).Func.Call([]Value{NewValue(&p), NewValue(10)})[0].(*IntValue).Get() + if i != 250 { + t.Errorf("Pointer Type Method returned %d; want 250", i) + } + + // Curried method of value. + i = NewValue(p).Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get() + if i != 250 { + t.Errorf("Value Method returned %d; want 250", i) + } + + // Curried method of interface value. + // Have to wrap interface value in a struct to get at it. + // Passing it to NewValue directly would + // access the underlying Point, not the interface. + var s = struct { + x interface { + Dist(int) int + } + }{p} + pv := NewValue(s).(*StructValue).Field(0) + i = pv.Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get() + if i != 250 { + t.Errorf("Interface Method returned %d; want 250", i) + } +} + +func TestInterfaceSet(t *testing.T) { + p := &Point{3, 4} + + var s struct { + I interface{} + P interface { + Dist(int) int + } + } + sv := NewValue(&s).(*PtrValue).Elem().(*StructValue) + sv.Field(0).(*InterfaceValue).Set(NewValue(p)) + if q := s.I.(*Point); q != p { + t.Errorf("i: have %p want %p", q, p) + } + + pv := sv.Field(1).(*InterfaceValue) + pv.Set(NewValue(p)) + if q := s.P.(*Point); q != p { + t.Errorf("i: have %p want %p", q, p) + } + + i := pv.Method(0).Call([]Value{NewValue(10)})[0].(*IntValue).Get() + if i != 250 { + t.Errorf("Interface Method returned %d; want 250", i) + } +} + +type T1 struct { + a string + int +} + +func TestAnonymousFields(t *testing.T) { + var field StructField + var ok bool + var t1 T1 + type1 := Typeof(t1).(*StructType) + if field, ok = type1.FieldByName("int"); !ok { + t.Error("no field 'int'") + } + if field.Index[0] != 1 { + t.Error("field index should be 1; is", field.Index) + } +} + +type FTest struct { + s interface{} + name string + index []int + value int +} + +type D1 struct { + d int +} +type D2 struct { + d int +} + +type S0 struct { + a, b, c int + D1 + D2 +} + +type S1 struct { + b int + S0 +} + +type S2 struct { + a int + *S1 +} + +type S1x struct { + S1 +} + +type S1y struct { + S1 +} + +type S3 struct { + S1x + S2 + d, e int + *S1y +} + +type S4 struct { + *S4 + a int +} + +var fieldTests = []FTest{ + {struct{}{}, "", nil, 0}, + {struct{}{}, "foo", nil, 0}, + {S0{a: 'a'}, "a", []int{0}, 'a'}, + {S0{}, "d", nil, 0}, + {S1{S0: S0{a: 'a'}}, "a", []int{1, 0}, 'a'}, + {S1{b: 'b'}, "b", []int{0}, 'b'}, + {S1{}, "S0", []int{1}, 0}, + {S1{S0: S0{c: 'c'}}, "c", []int{1, 2}, 'c'}, + {S2{a: 'a'}, "a", []int{0}, 'a'}, + {S2{}, "S1", []int{1}, 0}, + {S2{S1: &S1{b: 'b'}}, "b", []int{1, 0}, 'b'}, + {S2{S1: &S1{S0: S0{c: 'c'}}}, "c", []int{1, 1, 2}, 'c'}, + {S2{}, "d", nil, 0}, + {S3{}, "S1", nil, 0}, + {S3{S2: S2{a: 'a'}}, "a", []int{1, 0}, 'a'}, + {S3{}, "b", nil, 0}, + {S3{d: 'd'}, "d", []int{2}, 0}, + {S3{e: 'e'}, "e", []int{3}, 'e'}, + {S4{a: 'a'}, "a", []int{1}, 'a'}, + {S4{}, "b", nil, 0}, +} + +func TestFieldByIndex(t *testing.T) { + for _, test := range fieldTests { + s := Typeof(test.s).(*StructType) + f := s.FieldByIndex(test.index) + if f.Name != "" { + if test.index != nil { + if f.Name != test.name { + t.Errorf("%s.%s found; want %s", s.Name(), f.Name, test.name) + } + } else { + t.Errorf("%s.%s found", s.Name(), f.Name) + } + } else if len(test.index) > 0 { + t.Errorf("%s.%s not found", s.Name(), test.name) + } + + if test.value != 0 { + v := NewValue(test.s).(*StructValue).FieldByIndex(test.index) + if v != nil { + if x, ok := v.Interface().(int); ok { + if x != test.value { + t.Errorf("%s%v is %d; want %d", s.Name(), test.index, x, test.value) + } + } else { + t.Errorf("%s%v value not an int", s.Name(), test.index) + } + } else { + t.Errorf("%s%v value not found", s.Name(), test.index) + } + } + } +} + +func TestFieldByName(t *testing.T) { + for _, test := range fieldTests { + s := Typeof(test.s).(*StructType) + f, found := s.FieldByName(test.name) + if found { + if test.index != nil { + // Verify field depth and index. + if len(f.Index) != len(test.index) { + t.Errorf("%s.%s depth %d; want %d", s.Name(), test.name, len(f.Index), len(test.index)) + } else { + for i, x := range f.Index { + if x != test.index[i] { + t.Errorf("%s.%s.Index[%d] is %d; want %d", s.Name(), test.name, i, x, test.index[i]) + } + } + } + } else { + t.Errorf("%s.%s found", s.Name(), f.Name) + } + } else if len(test.index) > 0 { + t.Errorf("%s.%s not found", s.Name(), test.name) + } + + if test.value != 0 { + v := NewValue(test.s).(*StructValue).FieldByName(test.name) + if v != nil { + if x, ok := v.Interface().(int); ok { + if x != test.value { + t.Errorf("%s.%s is %d; want %d", s.Name(), test.name, x, test.value) + } + } else { + t.Errorf("%s.%s value not an int", s.Name(), test.name) + } + } else { + t.Errorf("%s.%s value not found", s.Name(), test.name) + } + } + } +} + +func TestImportPath(t *testing.T) { + if path := Typeof(vector.Vector{}).PkgPath(); path != "libgo_container.vector" { + t.Errorf("Typeof(vector.Vector{}).PkgPath() = %q, want \"libgo_container.vector\"", path) + } +} + +func TestDotDotDot(t *testing.T) { + // Test example from FuncType.DotDotDot documentation. + var f func(x int, y ...float64) + typ := Typeof(f).(*FuncType) + if typ.NumIn() == 2 && typ.In(0) == Typeof(int(0)) { + sl, ok := typ.In(1).(*SliceType) + if ok { + if sl.Elem() == Typeof(0.0) { + // ok + return + } + } + } + + // Failed + t.Errorf("want NumIn() = 2, In(0) = int, In(1) = []float64") + s := fmt.Sprintf("have NumIn() = %d", typ.NumIn()) + for i := 0; i < typ.NumIn(); i++ { + s += fmt.Sprintf(", In(%d) = %s", i, typ.In(i)) + } + t.Error(s) +} + +type inner struct { + x int +} + +type outer struct { + y int + inner +} + +func (*inner) m() {} +func (*outer) m() {} + +func TestNestedMethods(t *testing.T) { + typ := Typeof((*outer)(nil)) + if typ.NumMethod() != 1 || typ.Method(0).Func.Get() != NewValue((*outer).m).(*FuncValue).Get() { + t.Errorf("Wrong method table for outer: (m=%p)", (*outer).m) + for i := 0; i < typ.NumMethod(); i++ { + m := typ.Method(i) + t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Get()) + } + } +} + +type innerInt struct { + x int +} + +type outerInt struct { + y int + innerInt +} + +func (i *innerInt) m() int { + return i.x +} + +func TestEmbeddedMethods(t *testing.T) { + typ := Typeof((*outerInt)(nil)) + if typ.NumMethod() != 1 || typ.Method(0).Func.Get() != NewValue((*outerInt).m).(*FuncValue).Get() { + t.Errorf("Wrong method table for outerInt: (m=%p)", (*outerInt).m) + for i := 0; i < typ.NumMethod(); i++ { + m := typ.Method(i) + t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Get()) + } + } + + i := &innerInt{3} + if v := NewValue(i).Method(0).Call(nil)[0].(*IntValue).Get(); v != 3 { + t.Errorf("i.m() = %d, want 3", v) + } + + o := &outerInt{1, innerInt{2}} + if v := NewValue(o).Method(0).Call(nil)[0].(*IntValue).Get(); v != 2 { + t.Errorf("i.m() = %d, want 2", v) + } + + f := (*outerInt).m + if v := f(o); v != 2 { + t.Errorf("f(o) = %d, want 2", v) + } +} -- cgit v1.2.3