57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// Copyright (c) 2020 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package scorch
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import (
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"regexp/syntax"
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"testing"
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)
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func TestLiteralPrefix(t *testing.T) {
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tests := []struct {
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input, expected string
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}{
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{"", ""},
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{"hello", "hello"},
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{"hello.?", "hello"},
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{"hello$", "hello"},
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{`[h][e][l][l][o].*world`, "hello"},
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{`[h-h][e-e][l-l][l-l][o-o].*world`, "hello"},
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{".*", ""},
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{"h.*", "h"},
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{"h.?", "h"},
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{"h[a-z]", "h"},
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{`h\s`, "h"},
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{`(hello)world`, ""},
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{`日本語`, "日本語"},
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{`日本語\w`, "日本語"},
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{`^hello`, ""},
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{`^`, ""},
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{`$`, ""},
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{`(?i)mArTy`, ""},
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}
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for i, test := range tests {
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s, err := syntax.Parse(test.input, syntax.Perl)
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if err != nil {
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t.Fatalf("expected no syntax.Parse error, got: %v", err)
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}
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got := literalPrefix(s)
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if test.expected != got {
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t.Fatalf("test: %d, %+v, got: %s", i, test, got)
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}
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}
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}
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