/* * Copyright (c) 2013-2016 Dave Collins * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* Test Summary: NOTE: For each test, a nil pointer, a single pointer and double pointer to the base test element are also tested to ensure proper indirection across all types. - Max int8, int16, int32, int64, int - Max uint8, uint16, uint32, uint64, uint - Boolean true and false - Standard complex64 and complex128 - Array containing standard ints - Array containing type with custom formatter on pointer receiver only - Array containing interfaces - Array containing bytes - Slice containing standard float32 values - Slice containing type with custom formatter on pointer receiver only - Slice containing interfaces - Slice containing bytes - Nil slice - Standard string - Nil interface - Sub-interface - Map with string keys and int vals - Map with custom formatter type on pointer receiver only keys and vals - Map with interface keys and values - Map with nil interface value - Struct with primitives - Struct that contains another struct - Struct that contains custom type with Stringer pointer interface via both exported and unexported fields - Struct that contains embedded struct and field to same struct - Uintptr to 0 (null pointer) - Uintptr address of real variable - Unsafe.Pointer to 0 (null pointer) - Unsafe.Pointer to address of real variable - Nil channel - Standard int channel - Function with no params and no returns - Function with param and no returns - Function with multiple params and multiple returns - Struct that is circular through self referencing - Structs that are circular through cross referencing - Structs that are indirectly circular - Type that panics in its Stringer interface */ package spew_test import ( "bytes" "fmt" "testing" "unsafe" "go.wit.com/dev/davecgh/spew" ) // dumpTest is used to describe a test to be performed against the Dump method. type dumpTest struct { in interface{} wants []string } // dumpTests houses all of the tests to be performed against the Dump method. var dumpTests = make([]dumpTest, 0) // addDumpTest is a helper method to append the passed input and desired result // to dumpTests func addDumpTest(in interface{}, wants ...string) { test := dumpTest{in, wants} dumpTests = append(dumpTests, test) } func addIntDumpTests() { // Max int8. v := int8(127) nv := (*int8)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "int8" vs := "127" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Max int16. v2 := int16(32767) nv2 := (*int16)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "int16" v2s := "32767" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") // Max int32. v3 := int32(2147483647) nv3 := (*int32)(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "int32" v3s := "2147483647" addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") // Max int64. v4 := int64(9223372036854775807) nv4 := (*int64)(nil) pv4 := &v4 v4Addr := fmt.Sprintf("%p", pv4) pv4Addr := fmt.Sprintf("%p", &pv4) v4t := "int64" v4s := "9223372036854775807" addDumpTest(v4, "("+v4t+") "+v4s+"\n") addDumpTest(pv4, "(*"+v4t+")("+v4Addr+")("+v4s+")\n") addDumpTest(&pv4, "(**"+v4t+")("+pv4Addr+"->"+v4Addr+")("+v4s+")\n") addDumpTest(nv4, "(*"+v4t+")()\n") // Max int. v5 := int(2147483647) nv5 := (*int)(nil) pv5 := &v5 v5Addr := fmt.Sprintf("%p", pv5) pv5Addr := fmt.Sprintf("%p", &pv5) v5t := "int" v5s := "2147483647" addDumpTest(v5, "("+v5t+") "+v5s+"\n") addDumpTest(pv5, "(*"+v5t+")("+v5Addr+")("+v5s+")\n") addDumpTest(&pv5, "(**"+v5t+")("+pv5Addr+"->"+v5Addr+")("+v5s+")\n") addDumpTest(nv5, "(*"+v5t+")()\n") } func addUintDumpTests() { // Max uint8. v := uint8(255) nv := (*uint8)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "uint8" vs := "255" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Max uint16. v2 := uint16(65535) nv2 := (*uint16)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "uint16" v2s := "65535" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") // Max uint32. v3 := uint32(4294967295) nv3 := (*uint32)(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "uint32" v3s := "4294967295" addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") // Max uint64. v4 := uint64(18446744073709551615) nv4 := (*uint64)(nil) pv4 := &v4 v4Addr := fmt.Sprintf("%p", pv4) pv4Addr := fmt.Sprintf("%p", &pv4) v4t := "uint64" v4s := "18446744073709551615" addDumpTest(v4, "("+v4t+") "+v4s+"\n") addDumpTest(pv4, "(*"+v4t+")("+v4Addr+")("+v4s+")\n") addDumpTest(&pv4, "(**"+v4t+")("+pv4Addr+"->"+v4Addr+")("+v4s+")\n") addDumpTest(nv4, "(*"+v4t+")()\n") // Max uint. v5 := uint(4294967295) nv5 := (*uint)(nil) pv5 := &v5 v5Addr := fmt.Sprintf("%p", pv5) pv5Addr := fmt.Sprintf("%p", &pv5) v5t := "uint" v5s := "4294967295" addDumpTest(v5, "("+v5t+") "+v5s+"\n") addDumpTest(pv5, "(*"+v5t+")("+v5Addr+")("+v5s+")\n") addDumpTest(&pv5, "(**"+v5t+")("+pv5Addr+"->"+v5Addr+")("+v5s+")\n") addDumpTest(nv5, "(*"+v5t+")()\n") } func addBoolDumpTests() { // Boolean true. v := bool(true) nv := (*bool)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "bool" vs := "true" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Boolean false. v2 := bool(false) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "bool" v2s := "false" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") } func addFloatDumpTests() { // Standard float32. v := float32(3.1415) nv := (*float32)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "float32" vs := "3.1415" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Standard float64. v2 := float64(3.1415926) nv2 := (*float64)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "float64" v2s := "3.1415926" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") } func addComplexDumpTests() { // Standard complex64. v := complex(float32(6), -2) nv := (*complex64)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "complex64" vs := "(6-2i)" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Standard complex128. v2 := complex(float64(-6), 2) nv2 := (*complex128)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "complex128" v2s := "(-6+2i)" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") } func addArrayDumpTests() { // Array containing standard ints. v := [3]int{1, 2, 3} vLen := fmt.Sprintf("%d", len(v)) vCap := fmt.Sprintf("%d", cap(v)) nv := (*[3]int)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "int" vs := "(len=" + vLen + " cap=" + vCap + ") {\n (" + vt + ") 1,\n (" + vt + ") 2,\n (" + vt + ") 3\n}" addDumpTest(v, "([3]"+vt+") "+vs+"\n") addDumpTest(pv, "(*[3]"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**[3]"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*[3]"+vt+")()\n") // Array containing type with custom formatter on pointer receiver only. v2i0 := pstringer("1") v2i1 := pstringer("2") v2i2 := pstringer("3") v2 := [3]pstringer{v2i0, v2i1, v2i2} v2i0Len := fmt.Sprintf("%d", len(v2i0)) v2i1Len := fmt.Sprintf("%d", len(v2i1)) v2i2Len := fmt.Sprintf("%d", len(v2i2)) v2Len := fmt.Sprintf("%d", len(v2)) v2Cap := fmt.Sprintf("%d", cap(v2)) nv2 := (*[3]pstringer)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "spew_test.pstringer" v2sp := "(len=" + v2Len + " cap=" + v2Cap + ") {\n (" + v2t + ") (len=" + v2i0Len + ") stringer 1,\n (" + v2t + ") (len=" + v2i1Len + ") stringer 2,\n (" + v2t + ") (len=" + v2i2Len + ") " + "stringer 3\n}" v2s := v2sp if spew.UnsafeDisabled { v2s = "(len=" + v2Len + " cap=" + v2Cap + ") {\n (" + v2t + ") (len=" + v2i0Len + ") \"1\",\n (" + v2t + ") (len=" + v2i1Len + ") \"2\",\n (" + v2t + ") (len=" + v2i2Len + ") " + "\"3\"\n}" } addDumpTest(v2, "([3]"+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*[3]"+v2t+")("+v2Addr+")("+v2sp+")\n") addDumpTest(&pv2, "(**[3]"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2sp+")\n") addDumpTest(nv2, "(*[3]"+v2t+")()\n") // Array containing interfaces. v3i0 := "one" v3 := [3]interface{}{v3i0, int(2), uint(3)} v3i0Len := fmt.Sprintf("%d", len(v3i0)) v3Len := fmt.Sprintf("%d", len(v3)) v3Cap := fmt.Sprintf("%d", cap(v3)) nv3 := (*[3]interface{})(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "[3]interface {}" v3t2 := "string" v3t3 := "int" v3t4 := "uint" v3s := "(len=" + v3Len + " cap=" + v3Cap + ") {\n (" + v3t2 + ") " + "(len=" + v3i0Len + ") \"one\",\n (" + v3t3 + ") 2,\n (" + v3t4 + ") 3\n}" addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") // Array containing bytes. v4 := [34]byte{ 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, } v4Len := fmt.Sprintf("%d", len(v4)) v4Cap := fmt.Sprintf("%d", cap(v4)) nv4 := (*[34]byte)(nil) pv4 := &v4 v4Addr := fmt.Sprintf("%p", pv4) pv4Addr := fmt.Sprintf("%p", &pv4) v4t := "[34]uint8" v4s := "(len=" + v4Len + " cap=" + v4Cap + ") " + "{\n 00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20" + " |............... |\n" + " 00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30" + " |!\"#$%&'()*+,-./0|\n" + " 00000020 31 32 " + " |12|\n}" addDumpTest(v4, "("+v4t+") "+v4s+"\n") addDumpTest(pv4, "(*"+v4t+")("+v4Addr+")("+v4s+")\n") addDumpTest(&pv4, "(**"+v4t+")("+pv4Addr+"->"+v4Addr+")("+v4s+")\n") addDumpTest(nv4, "(*"+v4t+")()\n") } func addSliceDumpTests() { // Slice containing standard float32 values. v := []float32{3.14, 6.28, 12.56} vLen := fmt.Sprintf("%d", len(v)) vCap := fmt.Sprintf("%d", cap(v)) nv := (*[]float32)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "float32" vs := "(len=" + vLen + " cap=" + vCap + ") {\n (" + vt + ") 3.14,\n (" + vt + ") 6.28,\n (" + vt + ") 12.56\n}" addDumpTest(v, "([]"+vt+") "+vs+"\n") addDumpTest(pv, "(*[]"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**[]"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*[]"+vt+")()\n") // Slice containing type with custom formatter on pointer receiver only. v2i0 := pstringer("1") v2i1 := pstringer("2") v2i2 := pstringer("3") v2 := []pstringer{v2i0, v2i1, v2i2} v2i0Len := fmt.Sprintf("%d", len(v2i0)) v2i1Len := fmt.Sprintf("%d", len(v2i1)) v2i2Len := fmt.Sprintf("%d", len(v2i2)) v2Len := fmt.Sprintf("%d", len(v2)) v2Cap := fmt.Sprintf("%d", cap(v2)) nv2 := (*[]pstringer)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "spew_test.pstringer" v2s := "(len=" + v2Len + " cap=" + v2Cap + ") {\n (" + v2t + ") (len=" + v2i0Len + ") stringer 1,\n (" + v2t + ") (len=" + v2i1Len + ") stringer 2,\n (" + v2t + ") (len=" + v2i2Len + ") " + "stringer 3\n}" addDumpTest(v2, "([]"+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*[]"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**[]"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*[]"+v2t+")()\n") // Slice containing interfaces. v3i0 := "one" v3 := []interface{}{v3i0, int(2), uint(3), nil} v3i0Len := fmt.Sprintf("%d", len(v3i0)) v3Len := fmt.Sprintf("%d", len(v3)) v3Cap := fmt.Sprintf("%d", cap(v3)) nv3 := (*[]interface{})(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "[]interface {}" v3t2 := "string" v3t3 := "int" v3t4 := "uint" v3t5 := "interface {}" v3s := "(len=" + v3Len + " cap=" + v3Cap + ") {\n (" + v3t2 + ") " + "(len=" + v3i0Len + ") \"one\",\n (" + v3t3 + ") 2,\n (" + v3t4 + ") 3,\n (" + v3t5 + ") \n}" addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") // Slice containing bytes. v4 := []byte{ 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, } v4Len := fmt.Sprintf("%d", len(v4)) v4Cap := fmt.Sprintf("%d", cap(v4)) nv4 := (*[]byte)(nil) pv4 := &v4 v4Addr := fmt.Sprintf("%p", pv4) pv4Addr := fmt.Sprintf("%p", &pv4) v4t := "[]uint8" v4s := "(len=" + v4Len + " cap=" + v4Cap + ") " + "{\n 00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20" + " |............... |\n" + " 00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30" + " |!\"#$%&'()*+,-./0|\n" + " 00000020 31 32 " + " |12|\n}" addDumpTest(v4, "("+v4t+") "+v4s+"\n") addDumpTest(pv4, "(*"+v4t+")("+v4Addr+")("+v4s+")\n") addDumpTest(&pv4, "(**"+v4t+")("+pv4Addr+"->"+v4Addr+")("+v4s+")\n") addDumpTest(nv4, "(*"+v4t+")()\n") // Nil slice. v5 := []int(nil) nv5 := (*[]int)(nil) pv5 := &v5 v5Addr := fmt.Sprintf("%p", pv5) pv5Addr := fmt.Sprintf("%p", &pv5) v5t := "[]int" v5s := "" addDumpTest(v5, "("+v5t+") "+v5s+"\n") addDumpTest(pv5, "(*"+v5t+")("+v5Addr+")("+v5s+")\n") addDumpTest(&pv5, "(**"+v5t+")("+pv5Addr+"->"+v5Addr+")("+v5s+")\n") addDumpTest(nv5, "(*"+v5t+")()\n") } func addStringDumpTests() { // Standard string. v := "test" vLen := fmt.Sprintf("%d", len(v)) nv := (*string)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "string" vs := "(len=" + vLen + ") \"test\"" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") } func addInterfaceDumpTests() { // Nil interface. var v interface{} nv := (*interface{})(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "interface {}" vs := "" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Sub-interface. v2 := interface{}(uint16(65535)) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "uint16" v2s := "65535" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") } func addMapDumpTests() { // Map with string keys and int vals. k := "one" kk := "two" m := map[string]int{k: 1, kk: 2} klen := fmt.Sprintf("%d", len(k)) // not kLen to shut golint up kkLen := fmt.Sprintf("%d", len(kk)) mLen := fmt.Sprintf("%d", len(m)) nilMap := map[string]int(nil) nm := (*map[string]int)(nil) pm := &m mAddr := fmt.Sprintf("%p", pm) pmAddr := fmt.Sprintf("%p", &pm) mt := "map[string]int" mt1 := "string" mt2 := "int" ms := "(len=" + mLen + ") {\n (" + mt1 + ") (len=" + klen + ") " + "\"one\": (" + mt2 + ") 1,\n (" + mt1 + ") (len=" + kkLen + ") \"two\": (" + mt2 + ") 2\n}" ms2 := "(len=" + mLen + ") {\n (" + mt1 + ") (len=" + kkLen + ") " + "\"two\": (" + mt2 + ") 2,\n (" + mt1 + ") (len=" + klen + ") \"one\": (" + mt2 + ") 1\n}" addDumpTest(m, "("+mt+") "+ms+"\n", "("+mt+") "+ms2+"\n") addDumpTest(pm, "(*"+mt+")("+mAddr+")("+ms+")\n", "(*"+mt+")("+mAddr+")("+ms2+")\n") addDumpTest(&pm, "(**"+mt+")("+pmAddr+"->"+mAddr+")("+ms+")\n", "(**"+mt+")("+pmAddr+"->"+mAddr+")("+ms2+")\n") addDumpTest(nm, "(*"+mt+")()\n") addDumpTest(nilMap, "("+mt+") \n") // Map with custom formatter type on pointer receiver only keys and vals. k2 := pstringer("one") v2 := pstringer("1") m2 := map[pstringer]pstringer{k2: v2} k2Len := fmt.Sprintf("%d", len(k2)) v2Len := fmt.Sprintf("%d", len(v2)) m2Len := fmt.Sprintf("%d", len(m2)) nilMap2 := map[pstringer]pstringer(nil) nm2 := (*map[pstringer]pstringer)(nil) pm2 := &m2 m2Addr := fmt.Sprintf("%p", pm2) pm2Addr := fmt.Sprintf("%p", &pm2) m2t := "map[spew_test.pstringer]spew_test.pstringer" m2t1 := "spew_test.pstringer" m2t2 := "spew_test.pstringer" m2s := "(len=" + m2Len + ") {\n (" + m2t1 + ") (len=" + k2Len + ") " + "stringer one: (" + m2t2 + ") (len=" + v2Len + ") stringer 1\n}" if spew.UnsafeDisabled { m2s = "(len=" + m2Len + ") {\n (" + m2t1 + ") (len=" + k2Len + ") " + "\"one\": (" + m2t2 + ") (len=" + v2Len + ") \"1\"\n}" } addDumpTest(m2, "("+m2t+") "+m2s+"\n") addDumpTest(pm2, "(*"+m2t+")("+m2Addr+")("+m2s+")\n") addDumpTest(&pm2, "(**"+m2t+")("+pm2Addr+"->"+m2Addr+")("+m2s+")\n") addDumpTest(nm2, "(*"+m2t+")()\n") addDumpTest(nilMap2, "("+m2t+") \n") // Map with interface keys and values. k3 := "one" k3Len := fmt.Sprintf("%d", len(k3)) m3 := map[interface{}]interface{}{k3: 1} m3Len := fmt.Sprintf("%d", len(m3)) nilMap3 := map[interface{}]interface{}(nil) nm3 := (*map[interface{}]interface{})(nil) pm3 := &m3 m3Addr := fmt.Sprintf("%p", pm3) pm3Addr := fmt.Sprintf("%p", &pm3) m3t := "map[interface {}]interface {}" m3t1 := "string" m3t2 := "int" m3s := "(len=" + m3Len + ") {\n (" + m3t1 + ") (len=" + k3Len + ") " + "\"one\": (" + m3t2 + ") 1\n}" addDumpTest(m3, "("+m3t+") "+m3s+"\n") addDumpTest(pm3, "(*"+m3t+")("+m3Addr+")("+m3s+")\n") addDumpTest(&pm3, "(**"+m3t+")("+pm3Addr+"->"+m3Addr+")("+m3s+")\n") addDumpTest(nm3, "(*"+m3t+")()\n") addDumpTest(nilMap3, "("+m3t+") \n") // Map with nil interface value. k4 := "nil" k4Len := fmt.Sprintf("%d", len(k4)) m4 := map[string]interface{}{k4: nil} m4Len := fmt.Sprintf("%d", len(m4)) nilMap4 := map[string]interface{}(nil) nm4 := (*map[string]interface{})(nil) pm4 := &m4 m4Addr := fmt.Sprintf("%p", pm4) pm4Addr := fmt.Sprintf("%p", &pm4) m4t := "map[string]interface {}" m4t1 := "string" m4t2 := "interface {}" m4s := "(len=" + m4Len + ") {\n (" + m4t1 + ") (len=" + k4Len + ")" + " \"nil\": (" + m4t2 + ") \n}" addDumpTest(m4, "("+m4t+") "+m4s+"\n") addDumpTest(pm4, "(*"+m4t+")("+m4Addr+")("+m4s+")\n") addDumpTest(&pm4, "(**"+m4t+")("+pm4Addr+"->"+m4Addr+")("+m4s+")\n") addDumpTest(nm4, "(*"+m4t+")()\n") addDumpTest(nilMap4, "("+m4t+") \n") } func addStructDumpTests() { // Struct with primitives. type s1 struct { a int8 b uint8 } v := s1{127, 255} nv := (*s1)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "spew_test.s1" vt2 := "int8" vt3 := "uint8" vs := "{\n a: (" + vt2 + ") 127,\n b: (" + vt3 + ") 255\n}" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Struct that contains another struct. type s2 struct { s1 s1 b bool } v2 := s2{s1{127, 255}, true} nv2 := (*s2)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "spew_test.s2" v2t2 := "spew_test.s1" v2t3 := "int8" v2t4 := "uint8" v2t5 := "bool" v2s := "{\n s1: (" + v2t2 + ") {\n a: (" + v2t3 + ") 127,\n b: (" + v2t4 + ") 255\n },\n b: (" + v2t5 + ") true\n}" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") // Struct that contains custom type with Stringer pointer interface via both // exported and unexported fields. type s3 struct { s pstringer S pstringer } v3 := s3{"test", "test2"} nv3 := (*s3)(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "spew_test.s3" v3t2 := "spew_test.pstringer" v3s := "{\n s: (" + v3t2 + ") (len=4) stringer test,\n S: (" + v3t2 + ") (len=5) stringer test2\n}" v3sp := v3s if spew.UnsafeDisabled { v3s = "{\n s: (" + v3t2 + ") (len=4) \"test\",\n S: (" + v3t2 + ") (len=5) \"test2\"\n}" v3sp = "{\n s: (" + v3t2 + ") (len=4) \"test\",\n S: (" + v3t2 + ") (len=5) stringer test2\n}" } addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3sp+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3sp+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") // Struct that contains embedded struct and field to same struct. e := embed{"embedstr"} eLen := fmt.Sprintf("%d", len("embedstr")) v4 := embedwrap{embed: &e, e: &e} nv4 := (*embedwrap)(nil) pv4 := &v4 eAddr := fmt.Sprintf("%p", &e) v4Addr := fmt.Sprintf("%p", pv4) pv4Addr := fmt.Sprintf("%p", &pv4) v4t := "spew_test.embedwrap" v4t2 := "spew_test.embed" v4t3 := "string" v4s := "{\n embed: (*" + v4t2 + ")(" + eAddr + ")({\n a: (" + v4t3 + ") (len=" + eLen + ") \"embedstr\"\n }),\n e: (*" + v4t2 + ")(" + eAddr + ")({\n a: (" + v4t3 + ") (len=" + eLen + ")" + " \"embedstr\"\n })\n}" addDumpTest(v4, "("+v4t+") "+v4s+"\n") addDumpTest(pv4, "(*"+v4t+")("+v4Addr+")("+v4s+")\n") addDumpTest(&pv4, "(**"+v4t+")("+pv4Addr+"->"+v4Addr+")("+v4s+")\n") addDumpTest(nv4, "(*"+v4t+")()\n") } func addUintptrDumpTests() { // Null pointer. v := uintptr(0) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "uintptr" vs := "" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") // Address of real variable. i := 1 v2 := uintptr(unsafe.Pointer(&i)) nv2 := (*uintptr)(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "uintptr" v2s := fmt.Sprintf("%p", &i) addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") } func addUnsafePointerDumpTests() { // Null pointer. v := unsafe.Pointer(nil) nv := (*unsafe.Pointer)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "unsafe.Pointer" vs := "" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Address of real variable. i := 1 v2 := unsafe.Pointer(&i) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "unsafe.Pointer" v2s := fmt.Sprintf("%p", &i) addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv, "(*"+vt+")()\n") } func addChanDumpTests() { // Nil channel. var v chan int pv := &v nv := (*chan int)(nil) vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "chan int" vs := "" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Real channel. v2 := make(chan int) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "chan int" v2s := fmt.Sprintf("%p", v2) addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") } func addFuncDumpTests() { // Function with no params and no returns. v := addIntDumpTests nv := (*func())(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "func()" vs := fmt.Sprintf("%p", v) addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") // Function with param and no returns. v2 := TestDump nv2 := (*func(*testing.T))(nil) pv2 := &v2 v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "func(*testing.T)" v2s := fmt.Sprintf("%p", v2) addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s+")\n") addDumpTest(nv2, "(*"+v2t+")()\n") // Function with multiple params and multiple returns. var v3 = func(i int, s string) (b bool, err error) { return true, nil } nv3 := (*func(int, string) (bool, error))(nil) pv3 := &v3 v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "func(int, string) (bool, error)" v3s := fmt.Sprintf("%p", v3) addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s+")\n") addDumpTest(nv3, "(*"+v3t+")()\n") } func addCircularDumpTests() { // Struct that is circular through self referencing. type circular struct { c *circular } v := circular{nil} v.c = &v pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "spew_test.circular" vs := "{\n c: (*" + vt + ")(" + vAddr + ")({\n c: (*" + vt + ")(" + vAddr + ")()\n })\n}" vs2 := "{\n c: (*" + vt + ")(" + vAddr + ")()\n}" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs2+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs2+")\n") // Structs that are circular through cross referencing. v2 := xref1{nil} ts2 := xref2{&v2} v2.ps2 = &ts2 pv2 := &v2 ts2Addr := fmt.Sprintf("%p", &ts2) v2Addr := fmt.Sprintf("%p", pv2) pv2Addr := fmt.Sprintf("%p", &pv2) v2t := "spew_test.xref1" v2t2 := "spew_test.xref2" v2s := "{\n ps2: (*" + v2t2 + ")(" + ts2Addr + ")({\n ps1: (*" + v2t + ")(" + v2Addr + ")({\n ps2: (*" + v2t2 + ")(" + ts2Addr + ")()\n })\n })\n}" v2s2 := "{\n ps2: (*" + v2t2 + ")(" + ts2Addr + ")({\n ps1: (*" + v2t + ")(" + v2Addr + ")()\n })\n}" addDumpTest(v2, "("+v2t+") "+v2s+"\n") addDumpTest(pv2, "(*"+v2t+")("+v2Addr+")("+v2s2+")\n") addDumpTest(&pv2, "(**"+v2t+")("+pv2Addr+"->"+v2Addr+")("+v2s2+")\n") // Structs that are indirectly circular. v3 := indirCir1{nil} tic2 := indirCir2{nil} tic3 := indirCir3{&v3} tic2.ps3 = &tic3 v3.ps2 = &tic2 pv3 := &v3 tic2Addr := fmt.Sprintf("%p", &tic2) tic3Addr := fmt.Sprintf("%p", &tic3) v3Addr := fmt.Sprintf("%p", pv3) pv3Addr := fmt.Sprintf("%p", &pv3) v3t := "spew_test.indirCir1" v3t2 := "spew_test.indirCir2" v3t3 := "spew_test.indirCir3" v3s := "{\n ps2: (*" + v3t2 + ")(" + tic2Addr + ")({\n ps3: (*" + v3t3 + ")(" + tic3Addr + ")({\n ps1: (*" + v3t + ")(" + v3Addr + ")({\n ps2: (*" + v3t2 + ")(" + tic2Addr + ")()\n })\n })\n })\n}" v3s2 := "{\n ps2: (*" + v3t2 + ")(" + tic2Addr + ")({\n ps3: (*" + v3t3 + ")(" + tic3Addr + ")({\n ps1: (*" + v3t + ")(" + v3Addr + ")()\n })\n })\n}" addDumpTest(v3, "("+v3t+") "+v3s+"\n") addDumpTest(pv3, "(*"+v3t+")("+v3Addr+")("+v3s2+")\n") addDumpTest(&pv3, "(**"+v3t+")("+pv3Addr+"->"+v3Addr+")("+v3s2+")\n") } func addPanicDumpTests() { // Type that panics in its Stringer interface. v := panicer(127) nv := (*panicer)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "spew_test.panicer" vs := "(PANIC=test panic)127" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") } func addErrorDumpTests() { // Type that has a custom Error interface. v := customError(127) nv := (*customError)(nil) pv := &v vAddr := fmt.Sprintf("%p", pv) pvAddr := fmt.Sprintf("%p", &pv) vt := "spew_test.customError" vs := "error: 127" addDumpTest(v, "("+vt+") "+vs+"\n") addDumpTest(pv, "(*"+vt+")("+vAddr+")("+vs+")\n") addDumpTest(&pv, "(**"+vt+")("+pvAddr+"->"+vAddr+")("+vs+")\n") addDumpTest(nv, "(*"+vt+")()\n") } // TestDump executes all of the tests described by dumpTests. func TestDump(t *testing.T) { // Setup tests. addIntDumpTests() addUintDumpTests() addBoolDumpTests() addFloatDumpTests() addComplexDumpTests() addArrayDumpTests() addSliceDumpTests() addStringDumpTests() addInterfaceDumpTests() addMapDumpTests() addStructDumpTests() addUintptrDumpTests() addUnsafePointerDumpTests() addChanDumpTests() addFuncDumpTests() addCircularDumpTests() addPanicDumpTests() addErrorDumpTests() addCgoDumpTests() t.Logf("Running %d tests", len(dumpTests)) for i, test := range dumpTests { buf := new(bytes.Buffer) spew.Fdump(buf, test.in) s := buf.String() if testFailed(s, test.wants) { t.Errorf("Dump #%d\n got: %s %s", i, s, stringizeWants(test.wants)) continue } } } func TestDumpSortedKeys(t *testing.T) { cfg := spew.ConfigState{SortKeys: true} s := cfg.Sdump(map[int]string{1: "1", 3: "3", 2: "2"}) expected := "(map[int]string) (len=3) {\n(int) 1: (string) (len=1) " + "\"1\",\n(int) 2: (string) (len=1) \"2\",\n(int) 3: (string) " + "(len=1) \"3\"\n" + "}\n" if s != expected { t.Errorf("Sorted keys mismatch:\n %v %v", s, expected) } s = cfg.Sdump(map[stringer]int{"1": 1, "3": 3, "2": 2}) expected = "(map[spew_test.stringer]int) (len=3) {\n" + "(spew_test.stringer) (len=1) stringer 1: (int) 1,\n" + "(spew_test.stringer) (len=1) stringer 2: (int) 2,\n" + "(spew_test.stringer) (len=1) stringer 3: (int) 3\n" + "}\n" if s != expected { t.Errorf("Sorted keys mismatch:\n %v %v", s, expected) } s = cfg.Sdump(map[pstringer]int{pstringer("1"): 1, pstringer("3"): 3, pstringer("2"): 2}) expected = "(map[spew_test.pstringer]int) (len=3) {\n" + "(spew_test.pstringer) (len=1) stringer 1: (int) 1,\n" + "(spew_test.pstringer) (len=1) stringer 2: (int) 2,\n" + "(spew_test.pstringer) (len=1) stringer 3: (int) 3\n" + "}\n" if spew.UnsafeDisabled { expected = "(map[spew_test.pstringer]int) (len=3) {\n" + "(spew_test.pstringer) (len=1) \"1\": (int) 1,\n" + "(spew_test.pstringer) (len=1) \"2\": (int) 2,\n" + "(spew_test.pstringer) (len=1) \"3\": (int) 3\n" + "}\n" } if s != expected { t.Errorf("Sorted keys mismatch:\n %v %v", s, expected) } s = cfg.Sdump(map[customError]int{customError(1): 1, customError(3): 3, customError(2): 2}) expected = "(map[spew_test.customError]int) (len=3) {\n" + "(spew_test.customError) error: 1: (int) 1,\n" + "(spew_test.customError) error: 2: (int) 2,\n" + "(spew_test.customError) error: 3: (int) 3\n" + "}\n" if s != expected { t.Errorf("Sorted keys mismatch:\n %v %v", s, expected) } }