| 1 | // Copyright 2021 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package fuzzy_test |
| 6 | |
| 7 | import ( |
| 8 | "testing" |
| 9 | |
| 10 | . "golang.org/x/tools/internal/fuzzy" |
| 11 | ) |
| 12 | |
| 13 | func TestSymbolMatchIndex(t *testing.T) { |
| 14 | tests := []struct { |
| 15 | pattern, input string |
| 16 | want int |
| 17 | }{ |
| 18 | {"test", "foo.TestFoo", 4}, |
| 19 | {"test", "test", 0}, |
| 20 | {"test", "Test", 0}, |
| 21 | {"test", "est", -1}, |
| 22 | {"t", "shortest", 7}, |
| 23 | {"", "foo", -1}, |
| 24 | {"", string([]rune{0}), -1}, // verify that we don't default to an empty pattern. |
| 25 | {"anything", "", -1}, |
| 26 | } |
| 27 | |
| 28 | for _, test := range tests { |
| 29 | matcher := NewSymbolMatcher(test.pattern) |
| 30 | if got, _ := matcher.Match([]string{test.input}); got != test.want { |
| 31 | t.Errorf("NewSymbolMatcher(%q).Match(%q) = %v, _, want %v, _", test.pattern, test.input, got, test.want) |
| 32 | } |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | func TestSymbolRanking(t *testing.T) { |
| 37 | matcher := NewSymbolMatcher("test") |
| 38 | |
| 39 | // symbols to match, in ascending order of ranking. |
| 40 | symbols := []string{ |
| 41 | "this.is.better.than.most", |
| 42 | "test.foo.bar", |
| 43 | "atest", |
| 44 | "thebest", |
| 45 | "test.foo", |
| 46 | "test.foo", |
| 47 | "tTest", |
| 48 | "testage", |
| 49 | "foo.test", |
| 50 | "test", |
| 51 | } |
| 52 | prev := 0.0 |
| 53 | for _, sym := range symbols { |
| 54 | _, score := matcher.Match([]string{sym}) |
| 55 | t.Logf("Match(%q) = %v", sym, score) |
| 56 | if score < prev { |
| 57 | t.Errorf("Match(%q) = _, %v, want > %v", sym, score, prev) |
| 58 | } |
| 59 | prev = score |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | func TestChunkedMatch(t *testing.T) { |
| 64 | matcher := NewSymbolMatcher("test") |
| 65 | |
| 66 | chunked := [][]string{ |
| 67 | {"test"}, |
| 68 | {"", "test"}, |
| 69 | {"test", ""}, |
| 70 | {"te", "st"}, |
| 71 | } |
| 72 | |
| 73 | for _, chunks := range chunked { |
| 74 | offset, score := matcher.Match(chunks) |
| 75 | if offset != 0 || score != 1.0 { |
| 76 | t.Errorf("Match(%v) = %v, %v, want 0, 1.0", chunks, offset, score) |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 |
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