96 lines
2.8 KiB
Go
96 lines
2.8 KiB
Go
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package match_test
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import (
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"testing"
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"git.codemonkeysoftware.net/b/peachy-go/csexp"
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"git.codemonkeysoftware.net/b/peachy-go/csexp/match"
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"github.com/shoenig/test"
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"github.com/shoenig/test/must"
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)
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func TestMatchLiteral(t *testing.T) {
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t.Run("same", func(t *testing.T) {
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atom := csexp.Atom("hello")
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err := match.MustCompile(atom.String()).Match(atom)
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must.NoError(t, err)
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})
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t.Run("different", func(t *testing.T) {
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atom := csexp.Atom("hello")
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pattern := csexp.Atom("goodbye").String()
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err := match.MustCompile(pattern).Match(atom)
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var mismatch match.MismatchError
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must.ErrorAs(t, err, &mismatch)
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test.Equal(t, mismatch.Got, csexp.Sexp(atom))
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test.StrContains(t, mismatch.Expected, pattern)
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})
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}
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func TestMatchList(t *testing.T) {
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t.Run("both empty", func(t *testing.T) {
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err := match.MustCompile("()").Match(csexp.List(nil))
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must.NoError(t, err)
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})
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t.Run("same length", func(t *testing.T) {
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list := csexp.List{csexp.Atom("a"), csexp.Atom("b"), csexp.Atom("c")}
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err := match.MustCompile(list.String()).Match(list)
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must.NoError(t, err)
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})
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t.Run("sexp too long", func(t *testing.T) {
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list := csexp.List{csexp.Atom("a"), csexp.Atom("b"), csexp.Atom("c")}
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pattern := list[0:2].String()
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err := match.MustCompile(pattern).Match(list)
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var mismatch match.MismatchError
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must.ErrorAs(t, err, &mismatch)
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test.Equal(t, mismatch.Got, csexp.Sexp(list))
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test.StrContains(t, mismatch.Expected, "list of 2 items")
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})
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t.Run("sexp too short", func(t *testing.T) {
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list := csexp.List{csexp.Atom("a"), csexp.Atom("b"), csexp.Atom("c")}
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shortList := list[0:2]
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err := match.MustCompile(list.String()).Match(shortList)
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var mismatch match.MismatchError
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must.ErrorAs(t, err, &mismatch)
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test.Equal(t, mismatch.Got, csexp.Sexp(shortList))
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test.StrContains(t, mismatch.Expected, "list of 3 items")
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})
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}
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func TestExtract(t *testing.T) {
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matcher := match.MustCompile("(3:abc%s(%s3:jkl)%s3:pqr%s)")
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sexp, err := csexp.Parse([]byte("(3:abc3:def(3:ghi3:jkl)3:mno3:pqr3:stu)"))
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must.NoError(t, err)
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t.Run("correct number of operands", func(t *testing.T) {
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var def, ghi, mno, stu string
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err := matcher.Match(sexp, &def, &ghi, &mno, &stu)
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must.NoError(t, err)
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test.EqOp(t, "def", def)
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test.EqOp(t, "ghi", ghi)
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test.EqOp(t, "mno", mno)
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test.EqOp(t, "stu", stu)
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})
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t.Run("too many operands", func(t *testing.T) {
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var def, ghi, mno, stu, extra string
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err := matcher.Match(sexp, &def, &ghi, &mno, &stu, &extra)
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must.ErrorContains(t, err, "too many operands")
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test.EqOp(t, "def", def)
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test.EqOp(t, "ghi", ghi)
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test.EqOp(t, "mno", mno)
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test.EqOp(t, "stu", stu)
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})
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t.Run("too few operands", func(t *testing.T) {
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var def, ghi, mno string
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err := matcher.Match(sexp, &def, &ghi, &mno)
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must.ErrorContains(t, err, "too few operands")
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test.EqOp(t, "def", def)
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test.EqOp(t, "ghi", ghi)
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test.EqOp(t, "mno", mno)
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})
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}
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