mirror of
https://github.com/walles/moar.git
synced 2024-11-22 21:50:43 +03:00
90 lines
3.0 KiB
Go
90 lines
3.0 KiB
Go
package m
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import (
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"regexp"
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"testing"
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"gotest.tools/v3/assert"
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)
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// This is really a constant, don't change it!
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var _TestString = "mamma"
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func TestGetMatchRanges(t *testing.T) {
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matchRanges := getMatchRanges(&_TestString, regexp.MustCompile("m+"))
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assert.Equal(t, len(matchRanges.Matches), 2) // Two matches
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assert.DeepEqual(t, matchRanges.Matches[0][0], 0) // First match starts at 0
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assert.DeepEqual(t, matchRanges.Matches[0][1], 1) // And ends on 1 exclusive
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assert.DeepEqual(t, matchRanges.Matches[1][0], 2) // Second match starts at 2
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assert.DeepEqual(t, matchRanges.Matches[1][1], 4) // And ends on 4 exclusive
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}
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func TestGetMatchRangesNilPattern(t *testing.T) {
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matchRanges := getMatchRanges(&_TestString, nil)
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assert.Assert(t, matchRanges == nil)
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assert.Assert(t, !matchRanges.InRange(0))
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}
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func TestInRange(t *testing.T) {
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// Should match the one in TestGetMatchRanges()
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matchRanges := getMatchRanges(&_TestString, regexp.MustCompile("m+"))
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assert.Assert(t, !matchRanges.InRange(-1)) // Before start
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assert.Assert(t, matchRanges.InRange(0)) // m
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assert.Assert(t, !matchRanges.InRange(1)) // a
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assert.Assert(t, matchRanges.InRange(2)) // m
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assert.Assert(t, matchRanges.InRange(3)) // m
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assert.Assert(t, !matchRanges.InRange(4)) // a
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assert.Assert(t, !matchRanges.InRange(5)) // After end
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}
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func TestUtf8(t *testing.T) {
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// This test verifies that the match ranges are by rune rather than by byte
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unicodes := "-ä-ä-"
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matchRanges := getMatchRanges(&unicodes, regexp.MustCompile("ä"))
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assert.Assert(t, !matchRanges.InRange(0)) // -
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assert.Assert(t, matchRanges.InRange(1)) // ä
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assert.Assert(t, !matchRanges.InRange(2)) // -
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assert.Assert(t, matchRanges.InRange(3)) // ä
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assert.Assert(t, !matchRanges.InRange(4)) // -
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}
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func TestNoMatch(t *testing.T) {
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// This test verifies that the match ranges are by rune rather than by byte
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unicodes := "gris"
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matchRanges := getMatchRanges(&unicodes, regexp.MustCompile("apa"))
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assert.Assert(t, !matchRanges.InRange(0))
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assert.Assert(t, !matchRanges.InRange(1))
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assert.Assert(t, !matchRanges.InRange(2))
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assert.Assert(t, !matchRanges.InRange(3))
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assert.Assert(t, !matchRanges.InRange(4))
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}
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func TestEndMatch(t *testing.T) {
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// This test verifies that the match ranges are by rune rather than by byte
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unicodes := "-ä"
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matchRanges := getMatchRanges(&unicodes, regexp.MustCompile("ä"))
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assert.Assert(t, !matchRanges.InRange(0)) // -
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assert.Assert(t, matchRanges.InRange(1)) // ä
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assert.Assert(t, !matchRanges.InRange(2)) // Past the end
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}
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func TestRealWorldBug(t *testing.T) {
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// Verify a real world bug found in v1.9.8
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testString := "anna"
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matchRanges := getMatchRanges(&testString, regexp.MustCompile("n"))
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assert.Equal(t, len(matchRanges.Matches), 2) // Two matches
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assert.DeepEqual(t, matchRanges.Matches[0][0], 1) // First match starts at 1
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assert.DeepEqual(t, matchRanges.Matches[0][1], 2) // And ends on 2 exclusive
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assert.DeepEqual(t, matchRanges.Matches[1][0], 2) // Second match starts at 2
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assert.DeepEqual(t, matchRanges.Matches[1][1], 3) // And ends on 3 exclusive
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}
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