62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
package tokenize
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import (
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"testing"
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)
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func TestMoveCursorByBytes(t *testing.T) {
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api := NewAPI("")
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api.stackFrame.moveCursorByByte('a')
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api.stackFrame.moveCursorByByte('b')
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api.stackFrame.moveCursorByByte('c')
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api.stackFrame.moveCursorByByte('\r')
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api.stackFrame.moveCursorByByte('\n')
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api.stackFrame.moveCursorByByte('a')
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api.stackFrame.moveCursorByByte('b')
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AssertEqual(t, "line 2, column 3", api.Input.Cursor(), "Cursor position after moving by byte")
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}
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func TestMoveCursorByRunes(t *testing.T) {
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api := NewAPI("")
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api.stackFrame.moveCursorByRune('ɹ')
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api.stackFrame.moveCursorByRune('n')
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api.stackFrame.moveCursorByRune('u')
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api.stackFrame.moveCursorByRune('\r')
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api.stackFrame.moveCursorByRune('\n')
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api.stackFrame.moveCursorByRune('ǝ')
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AssertEqual(t, "line 2, column 2", api.Input.Cursor(), "Cursor position after moving by rune")
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}
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func TestWhenMovingCursor_CursorPositionIsUpdated(t *testing.T) {
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for _, test := range []struct {
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name string
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input []string
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byte int
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rune int
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line int
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column int
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}{
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{"No input at all", []string{""}, 0, 0, 0, 0},
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{"One ASCII char", []string{"a"}, 1, 1, 0, 1},
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{"Multiple ASCII chars", []string{"abc"}, 3, 3, 0, 3},
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{"One newline", []string{"\n"}, 1, 1, 1, 0},
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{"Carriage return", []string{"\r\r\r"}, 3, 3, 0, 3},
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{"One UTF8 3 byte char", []string{"⌘"}, 3, 1, 0, 1},
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{"Mixture", []string{"Hello\n\npretty\nW⌘O⌘R⌘L⌘D"}, 31, 23, 3, 9},
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{"Multiple calls", []string{"hello", "world"}, 10, 10, 0, 10},
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} {
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api := NewAPI("")
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for _, s := range test.input {
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api.stackFrame.moveCursor(s)
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}
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if api.stackFrame.line != test.line {
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t.Errorf("[%s] Unexpected line offset %d (expected %d)", test.name, api.stackFrame.line, test.line)
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}
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if api.stackFrame.column != test.column {
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t.Errorf("[%s] Unexpected column offset %d (expected %d)", test.name, api.stackFrame.column, test.column)
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}
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}
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}
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