diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/peterh/liner/width_test.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/peterh/liner/width_test.go | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/github.com/peterh/liner/width_test.go b/Godeps/_workspace/src/github.com/peterh/liner/width_test.go new file mode 100644 index 000000000..134920a4b --- /dev/null +++ b/Godeps/_workspace/src/github.com/peterh/liner/width_test.go @@ -0,0 +1,87 @@ +package liner + +import ( + "strconv" + "testing" +) + +func accent(in []rune) []rune { + var out []rune + for _, r := range in { + out = append(out, r) + out = append(out, '\u0301') + } + return out +} + +var testString = []rune("query") + +func TestCountGlyphs(t *testing.T) { + count := countGlyphs(testString) + if count != len(testString) { + t.Errorf("ASCII count incorrect. %d != %d", count, len(testString)) + } + count = countGlyphs(accent(testString)) + if count != len(testString) { + t.Errorf("Accent count incorrect. %d != %d", count, len(testString)) + } +} + +func compare(a, b []rune, name string, t *testing.T) { + if len(a) != len(b) { + t.Errorf(`"%s" != "%s" in %s"`, string(a), string(b), name) + return + } + for i := range a { + if a[i] != b[i] { + t.Errorf(`"%s" != "%s" in %s"`, string(a), string(b), name) + return + } + } +} + +func TestPrefixGlyphs(t *testing.T) { + for i := 0; i <= len(testString); i++ { + iter := strconv.Itoa(i) + out := getPrefixGlyphs(testString, i) + compare(out, testString[:i], "ascii prefix "+iter, t) + out = getPrefixGlyphs(accent(testString), i) + compare(out, accent(testString[:i]), "accent prefix "+iter, t) + } + out := getPrefixGlyphs(testString, 999) + compare(out, testString, "ascii prefix overflow", t) + out = getPrefixGlyphs(accent(testString), 999) + compare(out, accent(testString), "accent prefix overflow", t) + + out = getPrefixGlyphs(testString, -3) + if len(out) != 0 { + t.Error("ascii prefix negative") + } + out = getPrefixGlyphs(accent(testString), -3) + if len(out) != 0 { + t.Error("accent prefix negative") + } +} + +func TestSuffixGlyphs(t *testing.T) { + for i := 0; i <= len(testString); i++ { + iter := strconv.Itoa(i) + out := getSuffixGlyphs(testString, i) + compare(out, testString[len(testString)-i:], "ascii suffix "+iter, t) + out = getSuffixGlyphs(accent(testString), i) + compare(out, accent(testString[len(testString)-i:]), "accent suffix "+iter, t) + } + out := getSuffixGlyphs(testString, 999) + compare(out, testString, "ascii suffix overflow", t) + out = getSuffixGlyphs(accent(testString), 999) + compare(out, accent(testString), "accent suffix overflow", t) + + out = getSuffixGlyphs(testString, -3) + if len(out) != 0 { + t.Error("ascii suffix negative") + } + out = getSuffixGlyphs(accent(testString), -3) + if len(out) != 0 { + t.Error("accent suffix negative") + } +} |