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test: improve coverage for readline.Interface #20704

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test: improve coverage for readline.Interface #20704

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0fba741
test: improve coverage for readline.Interface
May 13, 2018
5e8d19b
test: use caps for the first letter in each comment
May 16, 2018
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171 changes: 171 additions & 0 deletions test/parallel/test-readline-interface.js
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Original file line number Diff line number Diff line change
Expand Up @@ -613,6 +613,43 @@ function isWarned(emitter) {
rli.close();
}

{
// Back and Forward one character
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
fi.emit('data', 'the quick brown fox');
let cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 19);

// Back one character
fi.emit('keypress', '.', { ctrl: true, name: 'b' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 18);
// Back one character
fi.emit('keypress', '.', { ctrl: true, name: 'b' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 17);
// Forward one character
fi.emit('keypress', '.', { ctrl: true, name: 'f' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 18);
// Forward one character
fi.emit('keypress', '.', { ctrl: true, name: 'f' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 19);
rli.close();
}

{
// `wordLeft` and `wordRight`
const fi = new FakeInput();
Expand Down Expand Up @@ -728,6 +765,117 @@ function isWarned(emitter) {
});
}

// deleteLeft
{
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
fi.emit('data', 'the quick brown fox');
let cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 19);

// Delete left character
fi.emit('keypress', '.', { ctrl: true, name: 'h' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 18);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'the quick brown fo');
}));
fi.emit('data', '\n');
rli.close();
}

// deleteRight
{
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
fi.emit('data', 'the quick brown fox');

// Go to the start of the line
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
let cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 0);

// Delete right character
fi.emit('keypress', '.', { ctrl: true, name: 'd' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'he quick brown fox');
}));
fi.emit('data', '\n');
rli.close();
}


// deleteLineLeft
{
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
fi.emit('data', 'the quick brown fox');
let cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 19);

// Delete from current to start of line
fi.emit('keypress', '.', { ctrl: true, shift: true, name: 'backspace' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}

// deleteLineRight
{
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
fi.emit('data', 'the quick brown fox');

// Go to the start of the line
fi.emit('keypress', '.', { ctrl: true, name: 'a' });
let cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 0);

// Delete from current to end of line
fi.emit('keypress', '.', { ctrl: true, shift: true, name: 'delete' });
cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 0);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, '');
}));
fi.emit('data', '\n');
rli.close();
}

// multi-line cursor position
{
const fi = new FakeInput();
Expand All @@ -742,6 +890,29 @@ function isWarned(emitter) {
const cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 1);
assert.strictEqual(cursorPos.cols, 5);
rli.close();
}

// Clear the whole screen
{
const fi = new FakeInput();
const rli = new readline.Interface({
input: fi,
output: fi,
prompt: '',
terminal: terminal
});
const lines = ['line 1', 'line 2', 'line 3'];
fi.emit('data', lines.join('\n'));
fi.emit('keypress', '.', { ctrl: true, name: 'l' });
const cursorPos = rli._getCursorPos();
assert.strictEqual(cursorPos.rows, 0);
assert.strictEqual(cursorPos.cols, 6);
rli.on('line', common.mustCall((line) => {
assert.strictEqual(line, 'line 3');
}));
fi.emit('data', '\n');
rli.close();
}
}

Expand Down