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parse_test.go
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package braceexpansion
import (
"fmt"
"testing"
)
func (l ListNode) String() string {
return fmt.Sprintf("List: %v", l.Phrases)
}
func (p PhraseNode) String() string {
return fmt.Sprintf("Phrase: %v", p.Parts)
}
func (t TextNode) String() string {
return fmt.Sprintf("\"%s\"", t.text)
}
type parseTest struct {
input string
ok bool
debug string
}
var parseTests = []parseTest{
{"abc", true, `List: [Phrase: ["abc"]]`},
{"a,b", true, `List: [Phrase: ["a" "," "b"]]`},
{"a,,b", true, `List: [Phrase: ["a" "," "," "b"]]`},
{"a,", true, `List: [Phrase: ["a" ","]]`},
{",a", true, `List: [Phrase: ["," "a"]]`},
{",a,", true, `List: [Phrase: ["," "a" ","]]`},
{",", true, `List: [Phrase: [","]]`},
{",,", true, `List: [Phrase: ["," ","]]`},
{",,,", true, `List: [Phrase: ["," "," ","]]`},
{"{,}", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""]]]]`},
{"{,,}", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""] Phrase: [""]]]]`},
{"{,,,}", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""] Phrase: [""] Phrase: [""]]]]`},
{"abc,def", true, `List: [Phrase: ["abc" "," "def"]]`},
{"{}", true, `List: [Phrase: [List: []]]`},
{"a{}", true, `List: [Phrase: ["a" List: []]]`},
{"a{,}", true, `List: [Phrase: ["a" List: [Phrase: [""] Phrase: [""]]]]`},
{"{abc,}", true, `List: [Phrase: [List: [Phrase: ["abc"] Phrase: [""]]]]`},
{"{,abc}", true, `List: [Phrase: [List: [Phrase: [""] Phrase: ["abc"]]]]`},
{"{abc}", true, `List: [Phrase: [List: [Phrase: ["abc"]]]]`},
{"{a{}}", true, `List: [Phrase: [List: [Phrase: ["a" List: []]]]]`},
{"{abc,def}", true, `List: [Phrase: [List: [Phrase: ["abc"] Phrase: ["def"]]]]`},
{"{a,b}{1,2}", true, `List: [Phrase: [List: [Phrase: ["a"] Phrase: ["b"]] List: [Phrase: ["1"] Phrase: ["2"]]]]`},
{"{abc}def", true, `List: [Phrase: [List: [Phrase: ["abc"]] "def"]]`},
{"}", false, ``},
{"}}", false, ``},
{"{{}", false, ``},
{"{}}", false, ``},
{"{,abc", false, ``},
{"{abc,def", false, ``},
}
var parseTestsCustom = []parseTest{
{"abc", true, `List: [Phrase: ["abc"]]`},
{"a,b", true, `List: [Phrase: ["a"] Phrase: ["b"]]`},
{"a,,b", true, `List: [Phrase: ["a"] Phrase: [""] Phrase: ["b"]]`},
{"a,", true, `List: [Phrase: ["a"] Phrase: [""]]`},
{",a", true, `List: [Phrase: [""] Phrase: ["a"]]`},
{",a,", true, `List: [Phrase: [""] Phrase: ["a"] Phrase: [""]]`},
{",", true, `List: [Phrase: [""] Phrase: [""]]`},
{",,", true, `List: [Phrase: [""] Phrase: [""] Phrase: [""]]`},
{",,,", true, `List: [Phrase: [""] Phrase: [""] Phrase: [""] Phrase: [""]]`},
{"(,)", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""]]]]`},
{"(,,)", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""] Phrase: [""]]]]`},
{"(,,,)", true, `List: [Phrase: [List: [Phrase: [""] Phrase: [""] Phrase: [""] Phrase: [""]]]]`},
{"abc,def", true, `List: [Phrase: ["abc"] Phrase: ["def"]]`},
{"()", true, `List: [Phrase: [List: []]]`},
{"a()", true, `List: [Phrase: ["a" List: []]]`},
{"a(,)", true, `List: [Phrase: ["a" List: [Phrase: [""] Phrase: [""]]]]`},
{"(abc,)", true, `List: [Phrase: [List: [Phrase: ["abc"] Phrase: [""]]]]`},
{"(,abc)", true, `List: [Phrase: [List: [Phrase: [""] Phrase: ["abc"]]]]`},
{"(abc)", true, `List: [Phrase: [List: [Phrase: ["abc"]]]]`},
{"(a())", true, `List: [Phrase: [List: [Phrase: ["a" List: []]]]]`},
{"(abc,def)", true, `List: [Phrase: [List: [Phrase: ["abc"] Phrase: ["def"]]]]`},
{"(a,b)(1,2)", true, `List: [Phrase: [List: [Phrase: ["a"] Phrase: ["b"]] List: [Phrase: ["1"] Phrase: ["2"]]]]`},
{"(abc)def", true, `List: [Phrase: [List: [Phrase: ["abc"]] "def"]]`},
{")", false, ``},
{"))", false, ``},
{"(()", false, ``},
{"())", false, ``},
{"(,abc", false, ``},
{"(abc,def", false, ``},
}
func TestParse(t *testing.T) {
testParse(t, parseTests, parse)
}
func TestParseCustom(t *testing.T) {
testParse(t, parseTestsCustom, parseCustom)
}
func testParse(t *testing.T, tests []parseTest, f parseFunc) {
for _, test := range tests {
t.Run(test.input, func(t *testing.T) {
tree, err := f(test.input)
switch {
case err == nil && !test.ok:
t.Error("Expected error, got none")
case err != nil && test.ok:
t.Errorf("Unexpected error: %v", err)
case err == nil && fmt.Sprintf("%v", tree.Root) != test.debug:
t.Errorf("Unexpected tree.\nWant:\n%v\nHave:\n%v", test.debug, fmt.Sprintf("%v", tree.Root))
default:
if err != nil {
t.Logf("\"%s\" => error", test.input)
} else {
t.Logf("\"%s\" => %v", test.input, tree.Root)
}
}
})
}
}
type parseFunc func(input string) (*Tree, error)
func parse(input string) (*Tree, error) {
return New().Parse(input)
}
func parseCustom(input string) (*Tree, error) {
opts := ParseOpts{OpenBrace: "(", CloseBrace: ")", Separator: ",", TreatRootAsList: true, TreatSingleAsOptional: true}
return New().ParseCustom(input, opts)
}