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-rw-r--r--spew_test.go320
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diff --git a/spew_test.go b/spew_test.go
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+/*
+ * Copyright (c) 2013-2016 Dave Collins <[email protected]>
+ *
+ * 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.
+ */
+
+package spew_test
+
+import (
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "testing"
+
+ "go.wit.com/dev/davecgh/spew"
+)
+
+// spewFunc is used to identify which public function of the spew package or
+// ConfigState a test applies to.
+type spewFunc int
+
+const (
+ fCSFdump spewFunc = iota
+ fCSFprint
+ fCSFprintf
+ fCSFprintln
+ fCSPrint
+ fCSPrintln
+ fCSSdump
+ fCSSprint
+ fCSSprintf
+ fCSSprintln
+ fCSErrorf
+ fCSNewFormatter
+ fErrorf
+ fFprint
+ fFprintln
+ fPrint
+ fPrintln
+ fSdump
+ fSprint
+ fSprintf
+ fSprintln
+)
+
+// Map of spewFunc values to names for pretty printing.
+var spewFuncStrings = map[spewFunc]string{
+ fCSFdump: "ConfigState.Fdump",
+ fCSFprint: "ConfigState.Fprint",
+ fCSFprintf: "ConfigState.Fprintf",
+ fCSFprintln: "ConfigState.Fprintln",
+ fCSSdump: "ConfigState.Sdump",
+ fCSPrint: "ConfigState.Print",
+ fCSPrintln: "ConfigState.Println",
+ fCSSprint: "ConfigState.Sprint",
+ fCSSprintf: "ConfigState.Sprintf",
+ fCSSprintln: "ConfigState.Sprintln",
+ fCSErrorf: "ConfigState.Errorf",
+ fCSNewFormatter: "ConfigState.NewFormatter",
+ fErrorf: "spew.Errorf",
+ fFprint: "spew.Fprint",
+ fFprintln: "spew.Fprintln",
+ fPrint: "spew.Print",
+ fPrintln: "spew.Println",
+ fSdump: "spew.Sdump",
+ fSprint: "spew.Sprint",
+ fSprintf: "spew.Sprintf",
+ fSprintln: "spew.Sprintln",
+}
+
+func (f spewFunc) String() string {
+ if s, ok := spewFuncStrings[f]; ok {
+ return s
+ }
+ return fmt.Sprintf("Unknown spewFunc (%d)", int(f))
+}
+
+// spewTest is used to describe a test to be performed against the public
+// functions of the spew package or ConfigState.
+type spewTest struct {
+ cs *spew.ConfigState
+ f spewFunc
+ format string
+ in interface{}
+ want string
+}
+
+// spewTests houses the tests to be performed against the public functions of
+// the spew package and ConfigState.
+//
+// These tests are only intended to ensure the public functions are exercised
+// and are intentionally not exhaustive of types. The exhaustive type
+// tests are handled in the dump and format tests.
+var spewTests []spewTest
+
+// redirStdout is a helper function to return the standard output from f as a
+// byte slice.
+func redirStdout(f func()) ([]byte, error) {
+ tempFile, err := ioutil.TempFile("", "ss-test")
+ if err != nil {
+ return nil, err
+ }
+ fileName := tempFile.Name()
+ defer os.Remove(fileName) // Ignore error
+
+ origStdout := os.Stdout
+ os.Stdout = tempFile
+ f()
+ os.Stdout = origStdout
+ tempFile.Close()
+
+ return ioutil.ReadFile(fileName)
+}
+
+func initSpewTests() {
+ // Config states with various settings.
+ scsDefault := spew.NewDefaultConfig()
+ scsNoMethods := &spew.ConfigState{Indent: " ", DisableMethods: true}
+ scsNoPmethods := &spew.ConfigState{Indent: " ", DisablePointerMethods: true}
+ scsMaxDepth := &spew.ConfigState{Indent: " ", MaxDepth: 1}
+ scsContinue := &spew.ConfigState{Indent: " ", ContinueOnMethod: true}
+ scsNoPtrAddr := &spew.ConfigState{DisablePointerAddresses: true}
+ scsNoCap := &spew.ConfigState{DisableCapacities: true}
+
+ // Variables for tests on types which implement Stringer interface with and
+ // without a pointer receiver.
+ ts := stringer("test")
+ tps := pstringer("test")
+
+ type ptrTester struct {
+ s *struct{}
+ }
+ tptr := &ptrTester{s: &struct{}{}}
+
+ // depthTester is used to test max depth handling for structs, array, slices
+ // and maps.
+ type depthTester struct {
+ ic indirCir1
+ arr [1]string
+ slice []string
+ m map[string]int
+ }
+ dt := depthTester{indirCir1{nil}, [1]string{"arr"}, []string{"slice"},
+ map[string]int{"one": 1}}
+
+ // Variable for tests on types which implement error interface.
+ te := customError(10)
+
+ spewTests = []spewTest{
+ {scsDefault, fCSFdump, "", int8(127), "(int8) 127\n"},
+ {scsDefault, fCSFprint, "", int16(32767), "32767"},
+ {scsDefault, fCSFprintf, "%v", int32(2147483647), "2147483647"},
+ {scsDefault, fCSFprintln, "", int(2147483647), "2147483647\n"},
+ {scsDefault, fCSPrint, "", int64(9223372036854775807), "9223372036854775807"},
+ {scsDefault, fCSPrintln, "", uint8(255), "255\n"},
+ {scsDefault, fCSSdump, "", uint8(64), "(uint8) 64\n"},
+ {scsDefault, fCSSprint, "", complex(1, 2), "(1+2i)"},
+ {scsDefault, fCSSprintf, "%v", complex(float32(3), 4), "(3+4i)"},
+ {scsDefault, fCSSprintln, "", complex(float64(5), 6), "(5+6i)\n"},
+ {scsDefault, fCSErrorf, "%#v", uint16(65535), "(uint16)65535"},
+ {scsDefault, fCSNewFormatter, "%v", uint32(4294967295), "4294967295"},
+ {scsDefault, fErrorf, "%v", uint64(18446744073709551615), "18446744073709551615"},
+ {scsDefault, fFprint, "", float32(3.14), "3.14"},
+ {scsDefault, fFprintln, "", float64(6.28), "6.28\n"},
+ {scsDefault, fPrint, "", true, "true"},
+ {scsDefault, fPrintln, "", false, "false\n"},
+ {scsDefault, fSdump, "", complex(-10, -20), "(complex128) (-10-20i)\n"},
+ {scsDefault, fSprint, "", complex(-1, -2), "(-1-2i)"},
+ {scsDefault, fSprintf, "%v", complex(float32(-3), -4), "(-3-4i)"},
+ {scsDefault, fSprintln, "", complex(float64(-5), -6), "(-5-6i)\n"},
+ {scsNoMethods, fCSFprint, "", ts, "test"},
+ {scsNoMethods, fCSFprint, "", &ts, "<*>test"},
+ {scsNoMethods, fCSFprint, "", tps, "test"},
+ {scsNoMethods, fCSFprint, "", &tps, "<*>test"},
+ {scsNoPmethods, fCSFprint, "", ts, "stringer test"},
+ {scsNoPmethods, fCSFprint, "", &ts, "<*>stringer test"},
+ {scsNoPmethods, fCSFprint, "", tps, "test"},
+ {scsNoPmethods, fCSFprint, "", &tps, "<*>stringer test"},
+ {scsMaxDepth, fCSFprint, "", dt, "{{<max>} [<max>] [<max>] map[<max>]}"},
+ {scsMaxDepth, fCSFdump, "", dt, "(spew_test.depthTester) {\n" +
+ " ic: (spew_test.indirCir1) {\n <max depth reached>\n },\n" +
+ " arr: ([1]string) (len=1 cap=1) {\n <max depth reached>\n },\n" +
+ " slice: ([]string) (len=1 cap=1) {\n <max depth reached>\n },\n" +
+ " m: (map[string]int) (len=1) {\n <max depth reached>\n }\n}\n"},
+ {scsContinue, fCSFprint, "", ts, "(stringer test) test"},
+ {scsContinue, fCSFdump, "", ts, "(spew_test.stringer) " +
+ "(len=4) (stringer test) \"test\"\n"},
+ {scsContinue, fCSFprint, "", te, "(error: 10) 10"},
+ {scsContinue, fCSFdump, "", te, "(spew_test.customError) " +
+ "(error: 10) 10\n"},
+ {scsNoPtrAddr, fCSFprint, "", tptr, "<*>{<*>{}}"},
+ {scsNoPtrAddr, fCSSdump, "", tptr, "(*spew_test.ptrTester)({\ns: (*struct {})({\n})\n})\n"},
+ {scsNoCap, fCSSdump, "", make([]string, 0, 10), "([]string) {\n}\n"},
+ {scsNoCap, fCSSdump, "", make([]string, 1, 10), "([]string) (len=1) {\n(string) \"\"\n}\n"},
+ }
+}
+
+// TestSpew executes all of the tests described by spewTests.
+func TestSpew(t *testing.T) {
+ initSpewTests()
+
+ t.Logf("Running %d tests", len(spewTests))
+ for i, test := range spewTests {
+ buf := new(bytes.Buffer)
+ switch test.f {
+ case fCSFdump:
+ test.cs.Fdump(buf, test.in)
+
+ case fCSFprint:
+ test.cs.Fprint(buf, test.in)
+
+ case fCSFprintf:
+ test.cs.Fprintf(buf, test.format, test.in)
+
+ case fCSFprintln:
+ test.cs.Fprintln(buf, test.in)
+
+ case fCSPrint:
+ b, err := redirStdout(func() { test.cs.Print(test.in) })
+ if err != nil {
+ t.Errorf("%v #%d %v", test.f, i, err)
+ continue
+ }
+ buf.Write(b)
+
+ case fCSPrintln:
+ b, err := redirStdout(func() { test.cs.Println(test.in) })
+ if err != nil {
+ t.Errorf("%v #%d %v", test.f, i, err)
+ continue
+ }
+ buf.Write(b)
+
+ case fCSSdump:
+ str := test.cs.Sdump(test.in)
+ buf.WriteString(str)
+
+ case fCSSprint:
+ str := test.cs.Sprint(test.in)
+ buf.WriteString(str)
+
+ case fCSSprintf:
+ str := test.cs.Sprintf(test.format, test.in)
+ buf.WriteString(str)
+
+ case fCSSprintln:
+ str := test.cs.Sprintln(test.in)
+ buf.WriteString(str)
+
+ case fCSErrorf:
+ err := test.cs.Errorf(test.format, test.in)
+ buf.WriteString(err.Error())
+
+ case fCSNewFormatter:
+ fmt.Fprintf(buf, test.format, test.cs.NewFormatter(test.in))
+
+ case fErrorf:
+ err := spew.Errorf(test.format, test.in)
+ buf.WriteString(err.Error())
+
+ case fFprint:
+ spew.Fprint(buf, test.in)
+
+ case fFprintln:
+ spew.Fprintln(buf, test.in)
+
+ case fPrint:
+ b, err := redirStdout(func() { spew.Print(test.in) })
+ if err != nil {
+ t.Errorf("%v #%d %v", test.f, i, err)
+ continue
+ }
+ buf.Write(b)
+
+ case fPrintln:
+ b, err := redirStdout(func() { spew.Println(test.in) })
+ if err != nil {
+ t.Errorf("%v #%d %v", test.f, i, err)
+ continue
+ }
+ buf.Write(b)
+
+ case fSdump:
+ str := spew.Sdump(test.in)
+ buf.WriteString(str)
+
+ case fSprint:
+ str := spew.Sprint(test.in)
+ buf.WriteString(str)
+
+ case fSprintf:
+ str := spew.Sprintf(test.format, test.in)
+ buf.WriteString(str)
+
+ case fSprintln:
+ str := spew.Sprintln(test.in)
+ buf.WriteString(str)
+
+ default:
+ t.Errorf("%v #%d unrecognized function", test.f, i)
+ continue
+ }
+ s := buf.String()
+ if test.want != s {
+ t.Errorf("ConfigState #%d\n got: %s want: %s", i, s, test.want)
+ continue
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.51.0) at 2025-11-04 15:21:26 +0000