mirror of
https://github.com/golang/go
synced 2024-10-05 12:31:23 -06:00
aa9ce6148a
convention used in template.go) R=rsc DELTA=22 (3 added, 1 deleted, 18 changed) OCL=29780 CL=29782
369 lines
8.1 KiB
Go
369 lines
8.1 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package datafmt
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import (
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"fmt";
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"datafmt";
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"io";
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"os";
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"testing";
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)
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func parse(t *testing.T, form string, fmap FormatterMap) Format {
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f, err := Parse(io.StringBytes(form), fmap);
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if err != nil {
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t.Errorf("Parse(%s): %v", form, err);
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return nil;
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}
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return f;
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}
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func verify(t *testing.T, f Format, expected string, args ...) {
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if f == nil {
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return; // allow other tests to run
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}
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result := f.Sprint(args);
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if result != expected {
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t.Errorf(
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"result : `%s`\nexpected: `%s`\n\n",
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result, expected
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)
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}
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}
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func formatter(s *State, value interface{}, rule_name string) bool {
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switch rule_name {
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case "/":
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fmt.Fprintf(s, "%d %d %d", s.Pos().Line, s.LinePos().Column, s.Pos().Column);
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return true;
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case "blank":
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s.Write([]byte{' '});
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return true;
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case "int":
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if value.(int) & 1 == 0 {
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fmt.Fprint(s, "even ");
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} else {
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fmt.Fprint(s, "odd ");
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}
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return true;
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case "nil":
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return false;
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}
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panic("unreachable");
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return false;
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}
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func TestCustomFormatters(t *testing.T) {
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fmap0 := FormatterMap{ "/": formatter };
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fmap1 := FormatterMap{ "int": formatter, "blank": formatter, "nil": formatter };
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f := parse(t, `int=`, fmap0);
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verify(t, f, ``, 1, 2, 3);
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f = parse(t, `int="#"`, nil);
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verify(t, f, `###`, 1, 2, 3);
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f = parse(t, `int="#";string="%s"`, fmap0);
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verify(t, f, "#1 0 1#1 0 7#1 0 13\n2 0 0foo2 0 8\n", 1, 2, 3, "\n", "foo", "\n");
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f = parse(t, ``, fmap1);
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verify(t, f, `even odd even odd `, 0, 1, 2, 3);
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f = parse(t, `/ =@:blank; float="#"`, fmap1);
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verify(t, f, `# # #`, 0.0, 1.0, 2.0);
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f = parse(t, `float=@:nil`, fmap1);
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verify(t, f, ``, 0.0, 1.0, 2.0);
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// TODO needs more tests
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}
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// ----------------------------------------------------------------------------
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// Formatting of basic and simple composite types
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func check(t *testing.T, form, expected string, args ...) {
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f := parse(t, form, nil);
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if f == nil {
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return; // allow other tests to run
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}
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result := f.Sprint(args);
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if result != expected {
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t.Errorf(
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"format : %s\nresult : `%s`\nexpected: `%s`\n\n",
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form, result, expected
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)
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}
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}
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func TestBasicTypes(t *testing.T) {
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check(t, ``, ``);
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check(t, `bool=":%v"`, `:true:false`, true, false);
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check(t, `int="%b %d %o 0x%x"`, `101010 42 52 0x2a`, 42);
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check(t, `int="%"`, `%`, 42);
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check(t, `int="%%"`, `%`, 42);
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check(t, `int="**%%**"`, `**%**`, 42);
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check(t, `int="%%%%%%"`, `%%%`, 42);
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check(t, `int="%%%d%%"`, `%42%`, 42);
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const i = -42;
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const is = `-42`;
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check(t, `int ="%d"`, is, i);
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check(t, `int8 ="%d"`, is, int8(i));
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check(t, `int16="%d"`, is, int16(i));
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check(t, `int32="%d"`, is, int32(i));
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check(t, `int64="%d"`, is, int64(i));
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const u = 42;
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const us = `42`;
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check(t, `uint ="%d"`, us, uint(u));
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check(t, `uint8 ="%d"`, us, uint8(u));
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check(t, `uint16="%d"`, us, uint16(u));
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check(t, `uint32="%d"`, us, uint32(u));
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check(t, `uint64="%d"`, us, uint64(u));
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const f = 3.141592;
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const fs = `3.141592`;
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check(t, `float ="%g"`, fs, f);
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check(t, `float32="%g"`, fs, float32(f));
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check(t, `float64="%g"`, fs, float64(f));
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}
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func TestArrayTypes(t *testing.T) {
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var a0 [10]int;
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check(t, `array="array";`, `array`, a0);
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a1 := [...]int{1, 2, 3};
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check(t, `array="array";`, `array`, a1);
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check(t, `array={*}; int="%d";`, `123`, a1);
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check(t, `array={* / ", "}; int="%d";`, `1, 2, 3`, a1);
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check(t, `array={* / *}; int="%d";`, `12233`, a1);
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a2 := []interface{}{42, "foo", 3.14};
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check(t, `array={* / ", "}; interface=*; string="bar"; default="%v";`, `42, bar, 3.14`, a2);
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}
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func TestChanTypes(t *testing.T) {
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var c0 chan int;
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check(t, `chan="chan"`, `chan`, c0);
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c1 := make(chan int);
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go func(){ c1 <- 42 }();
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check(t, `chan="chan"`, `chan`, c1);
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// check(t, `chan=*`, `42`, c1); // reflection support for chans incomplete
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}
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func TestFuncTypes(t *testing.T) {
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var f0 func() int;
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check(t, `func="func"`, `func`, f0);
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f1 := func() int { return 42; };
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check(t, `func="func"`, `func`, f1);
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// check(t, `func=*`, `42`, f1); // reflection support for funcs incomplete
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}
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func TestInterfaceTypes(t *testing.T) {
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var i0 interface{};
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check(t, `interface="interface"`, `interface`, i0);
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i0 = "foo";
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check(t, `interface="interface"`, `interface`, i0);
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check(t, `interface=*; string="%s"`, `foo`, i0);
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}
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func TestMapTypes(t *testing.T) {
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var m0 map[string]int;
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check(t, `map="map"`, `map`, m0);
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m1 := map[string]int{};
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check(t, `map="map"`, `map`, m1);
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// check(t, `map=*`, ``, m1); // reflection support for maps incomplete
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}
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func TestPointerTypes(t *testing.T) {
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var p0 *int;
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check(t, `ptr="ptr"`, `ptr`, p0);
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check(t, `ptr=*`, ``, p0);
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check(t, `ptr=*|"nil"`, `nil`, p0);
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x := 99991;
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p1 := &x;
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check(t, `ptr="ptr"`, `ptr`, p1);
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check(t, `ptr=*; int="%d"`, `99991`, p1);
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}
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func TestDefaultRule(t *testing.T) {
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check(t, `default="%v"`, `42foo3.14`, 42, "foo", 3.14);
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check(t, `default="%v"; int="%x"`, `abcdef`, 10, 11, 12, 13, 14, 15);
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check(t, `default="%v"; int="%x"`, `ab**ef`, 10, 11, "**", 14, 15);
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check(t, `default="%x"; int=@:default`, `abcdef`, 10, 11, 12, 13, 14, 15);
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}
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func TestGlobalSeparatorRule(t *testing.T) {
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check(t, `int="%d"; / ="-"`, `1-2-3-4`, 1, 2, 3, 4);
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check(t, `int="%x%x"; / ="*"`, `aa*aa`, 10, 10);
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}
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// ----------------------------------------------------------------------------
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// Formatting of a struct
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type T1 struct {
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a int;
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}
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const F1 =
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`datafmt "datafmt";`
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`int = "%d";`
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`datafmt.T1 = "<" a ">";`
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func TestStruct1(t *testing.T) {
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check(t, F1, "<42>", T1{42});
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}
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// ----------------------------------------------------------------------------
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// Formatting of a struct with an optional field (ptr)
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type T2 struct {
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s string;
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p *T1;
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}
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const F2a =
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F1 +
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`string = "%s";`
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`ptr = *;`
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`datafmt.T2 = s ["-" p "-"];`
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const F2b =
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F1 +
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`string = "%s";`
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`ptr = *;`
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`datafmt.T2 = s ("-" p "-" | "empty");`;
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func TestStruct2(t *testing.T) {
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check(t, F2a, "foo", T2{"foo", nil});
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check(t, F2a, "bar-<17>-", T2{"bar", &T1{17}});
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check(t, F2b, "fooempty", T2{"foo", nil});
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}
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// ----------------------------------------------------------------------------
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// Formatting of a struct with a repetitive field (slice)
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type T3 struct {
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s string;
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a []int;
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}
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const F3a =
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`datafmt "datafmt";`
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`default = "%v";`
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`array = *;`
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`datafmt.T3 = s {" " a a / ","};`
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const F3b =
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`datafmt "datafmt";`
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`int = "%d";`
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`string = "%s";`
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`array = *;`
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`nil = ;`
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`empty = *:nil;`
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`datafmt.T3 = s [a:empty ": " {a / "-"}]`
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func TestStruct3(t *testing.T) {
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check(t, F3a, "foo", T3{"foo", nil});
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check(t, F3a, "foo 00, 11, 22", T3{"foo", []int{0, 1, 2}});
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check(t, F3b, "bar", T3{"bar", nil});
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check(t, F3b, "bal: 2-3-5", T3{"bal", []int{2, 3, 5}});
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}
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// ----------------------------------------------------------------------------
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// Formatting of a struct with alternative field
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type T4 struct {
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x *int;
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a []int;
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}
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const F4a =
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`datafmt "datafmt";`
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`int = "%d";`
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`ptr = *;`
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`array = *;`
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`nil = ;`
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`empty = *:nil;`
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`datafmt.T4 = "<" (x:empty x | "-") ">" `
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const F4b =
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`datafmt "datafmt";`
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`int = "%d";`
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`ptr = *;`
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`array = *;`
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`nil = ;`
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`empty = *:nil;`
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`datafmt.T4 = "<" (a:empty {a / ", "} | "-") ">" `
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func TestStruct4(t *testing.T) {
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x := 7;
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check(t, F4a, "<->", T4{nil, nil});
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check(t, F4a, "<7>", T4{&x, nil});
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check(t, F4b, "<->", T4{nil, nil});
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check(t, F4b, "<2, 3, 7>", T4{nil, []int{2, 3, 7}});
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}
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// ----------------------------------------------------------------------------
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// Formatting a struct (documentation example)
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type Point struct {
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name string;
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x, y int;
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}
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const FPoint =
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`datafmt "datafmt";`
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`int = "%d";`
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`hexInt = "0x%x";`
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`string = "---%s---";`
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`datafmt.Point = name "{" x ", " y:hexInt "}";`
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func TestStructPoint(t *testing.T) {
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p := Point{"foo", 3, 15};
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check(t, FPoint, "---foo---{3, 0xf}", p);
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}
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// ----------------------------------------------------------------------------
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// Formatting a slice (documentation example)
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const FSlice =
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`int = "%b";`
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`array = { * / ", " }`
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func TestSlice(t *testing.T) {
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check(t, FSlice, "10, 11, 101, 111", []int{2, 3, 5, 7});
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}
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// TODO add more tests
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