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HistoryTest.cs
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using System;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.PowerShell;
namespace UnitTestPSReadLine
{
// Disgusting language hack to make it easier to read a sequence of keys.
using _ = Keys;
public partial class UnitTest
{
private void SetHistory(params string[] historyItems)
{
PSConsoleReadLine.ClearHistory();
foreach (var item in historyItems)
{
PSConsoleReadLine.AddToHistory(item);
}
}
[TestMethod]
public void TestHistory()
{
TestSetup(KeyMode.Cmd);
// No history
SetHistory();
Test("", Keys(_.UpArrow, _.DownArrow));
SetHistory("dir c*", "ps p*");
Test("dir c*", Keys(_.UpArrow, _.UpArrow));
Test("dir c*", Keys(_.UpArrow, _.UpArrow, _.DownArrow));
}
[TestMethod]
public void TestHistoryRecallCurrentLine()
{
TestSetup(KeyMode.Cmd);
SetHistory("echo foo", "echo bar");
Test("ec", Keys("ec", _.UpArrow, _.UpArrow, _.DownArrow, _.DownArrow));
}
[TestMethod]
public void TestHistorySearchCurrentLine()
{
TestSetup(KeyMode.Cmd,
new KeyHandler("UpArrow", PSConsoleReadLine.HistorySearchBackward),
new KeyHandler("DownArrow", PSConsoleReadLine.HistorySearchForward));
SetHistory("echo foo", "echo bar");
Test("ec", Keys("ec", _.UpArrow, _.UpArrow, _.DownArrow, _.DownArrow));
}
[TestMethod]
public void TestSearchHistory()
{
TestSetup(KeyMode.Cmd,
new KeyHandler("UpArrow", PSConsoleReadLine.HistorySearchBackward),
new KeyHandler("DownArrow", PSConsoleReadLine.HistorySearchForward));
// No history
SetHistory();
Test("", Keys(_.UpArrow, _.DownArrow));
// Clear history in case the above added some history (but it shouldn't)
SetHistory();
Test(" ", Keys(' ', _.UpArrow, _.DownArrow));
var options = PSConsoleReadLine.GetOptions();
var emphasisColors = Tuple.Create(options.EmphasisForegroundColor, options.EmphasisBackgroundColor);
SetHistory("dosomething", "ps p*", "dir", "echo zzz");
Test("dosomething", Keys(
"d",
_.UpArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "ir");
AssertCursorLeftIs(3);
}),
_.UpArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "osomething");
AssertCursorLeftIs(11);
}),
_.DownArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "ir");
AssertCursorLeftIs(3);
}),
_.UpArrow, CheckThat(() =>
{
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "osomething");
AssertCursorLeftIs(11);
})));
}
[TestMethod]
public void TestHistorySearchCursorMovesToEnd()
{
TestSetup(KeyMode.Cmd,
new KeyHandler("UpArrow", PSConsoleReadLine.HistorySearchBackward),
new KeyHandler("DownArrow", PSConsoleReadLine.HistorySearchForward));
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {HistorySearchCursorMovesToEnd = true});
var options = PSConsoleReadLine.GetOptions();
var emphasisColors = Tuple.Create(options.EmphasisForegroundColor, options.EmphasisBackgroundColor);
SetHistory("dosomething", "ps p*", "dir", "echo zzz");
Test("dosomething", Keys(
"d",
_.UpArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "ir");
AssertCursorLeftIs(3);
}),
_.UpArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "osomething");
AssertCursorLeftIs(11);
}),
_.DownArrow, CheckThat(() => {
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "ir");
AssertCursorLeftIs(3);
}),
_.UpArrow, CheckThat(() =>
{
AssertScreenIs(1,
emphasisColors, 'd',
TokenClassification.Command, "osomething");
AssertCursorLeftIs(11);
})));
}
[TestMethod]
public void TestBeginningOfHistory()
{
TestSetup(KeyMode.Emacs);
SetHistory("echo first", "echo second", "echo third");
Test("echo first", Keys(_.AltLess));
SetHistory("echo first", "echo second", "echo third");
Test("echo second", Keys(_.AltLess, _.DownArrow));
}
[TestMethod]
public void TestEndOfHistory()
{
TestSetup(KeyMode.Emacs);
SetHistory("echo first", "echo second", "echo third");
Test("", Keys(_.UpArrow, _.AltGreater));
// Make sure end of history restores the "current" line if
// there was anything entered before going through history
Test("abc", Keys("abc", _.UpArrow, _.AltGreater));
// Make sure we don't recall the previous "current" line
// after we accepted it.
Test("", Keys(_.AltGreater));
}
[TestMethod]
public void TestInteractiveHistorySearch()
{
TestSetup(KeyMode.Emacs);
SetHistory("echo aaa");
Test("echo aaa", Keys(_.CtrlR, 'a'));
var options = PSConsoleReadLine.GetOptions();
var emphasisColors = Tuple.Create(options.EmphasisForegroundColor, options.EmphasisBackgroundColor);
var statusColors = Tuple.Create(Console.ForegroundColor, Console.BackgroundColor);
// Test entering multiple characters and the line is updated with new matches
SetHistory("zz1", "echo abc", "zz2", "echo abb", "zz3", "echo aaa", "zz4");
Test("echo abc", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "aa",
NextLine,
statusColors, "bck-i-search: a_")),
'b', CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "ab",
TokenClassification.None, 'b',
NextLine,
statusColors, "bck-i-search: ab_")),
'c', CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "abc",
NextLine,
statusColors, "bck-i-search: abc_"))));
// Test repeated Ctrl+R goes back through multiple matches
SetHistory("zz1", "echo abc", "zz2", "echo abb", "zz3", "echo aaa", "zz4");
Test("echo abc", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "aa",
NextLine,
statusColors, "bck-i-search: a_")),
_.CtrlR, CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bb",
NextLine,
statusColors, "bck-i-search: a_")),
_.CtrlR, CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_"))));
// Test that the current match doesn't change when typing
// additional characters, only emphasis should change.
SetHistory("zz1", "echo abzz", "echo abc", "zz2");
Test("echo abc", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_")),
'b',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "ab",
TokenClassification.None, 'c',
NextLine,
statusColors, "bck-i-search: ab_"))));
// Test that abort restores line state before Ctrl+R
SetHistory("zz1", "echo abzz", "echo abc", "zz2");
Test("echo zed", Keys("echo zed", _.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_")),
_.CtrlG,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
TokenClassification.None, "zed",
NextLine))));
// Test that a random function terminates the search and has an
// effect on the line found in history
SetHistory("zz1", "echo abzz", "echo abc", "zz2");
Test("echo zed", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_")),
_.AltD, "zed"));
// Test that Escape terminates the search leaving the
// cursor at the point in the match.
SetHistory("zz1", "echo abzz", "echo abc", "zz2");
Test("echo yabc", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_")),
_.Escape, "y"));
// Test entering multiple characters, then backspace, make sure we restore
// the correct line
SetHistory("zz1", "echo abc", "zz2", "echo abb", "zz3", "echo aaa", "zz4");
Test("echo aaa", Keys(_.CtrlR,
_.Backspace, // Try backspace on empty search string
"ab", CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "ab",
TokenClassification.None, 'b',
NextLine,
statusColors, "bck-i-search: ab_")),
_.Backspace,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "aa",
NextLine,
statusColors, "bck-i-search: a_"))));
SetHistory("zz1", "echo abzz", "echo abc", "zz2");
Test("", Keys(_.CtrlR,
'a',
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bc",
NextLine,
statusColors, "bck-i-search: a_")),
_.CtrlR,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bzz",
NextLine,
statusColors, "bck-i-search: a_")),
_.CtrlR,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
TokenClassification.None, "abzz",
NextLine,
statusColors, "failed-bck-i-search: a_")),
_.CtrlS,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, 'a',
TokenClassification.None, "bzz",
NextLine,
statusColors, "fwd-i-search: a_")),
_.CtrlG));
// Test that searching works after a failed search
SetHistory("echo aa1", "echo bb1", "echo bb2", "echo aa2");
Test("echo aa1", Keys(_.CtrlR, "zz", _.Backspace, _.Backspace, "a1",
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " a",
emphasisColors, "a1",
NextLine,
statusColors, "bck-i-search: a1_"))
));
// Test that searching works after backspace after a successful search
SetHistory("echo aa1", "echo bb1", "echo bb2", "echo aa2");
Test("echo aa2", Keys(
_.CtrlR,
"aa",
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "aa",
TokenClassification.None, "2",
NextLine,
statusColors, "bck-i-search: aa_")),
_.CtrlR,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "aa",
TokenClassification.None, "1",
NextLine,
statusColors, "bck-i-search: aa_")),
_.Backspace,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "a",
TokenClassification.None, "a2",
NextLine,
statusColors, "bck-i-search: a_")),
'a', _.CtrlR,
CheckThat(() => AssertScreenIs(2,
TokenClassification.Command, "echo",
TokenClassification.None, " ",
emphasisColors, "aa",
TokenClassification.None, "1",
NextLine,
statusColors, "bck-i-search: aa_")),
_.Backspace));
// TODO: long search line
// TODO: start with Ctrl+S
// TODO: "fast" typing in search where buffered keys after search is accepted
}
[TestMethod]
public void TestAddToHistoryHandler()
{
TestSetup(KeyMode.Cmd);
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {AddToHistoryHandler = s => s.StartsWith("z")});
SetHistory("zzzz", "azzz");
Test("zzzz", Keys(_.UpArrow));
}
[TestMethod]
public void TestHistoryNoDuplicates()
{
TestSetup(KeyMode.Cmd);
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {HistoryNoDuplicates = false});
SetHistory("zzzz", "aaaa", "bbbb", "bbbb", "cccc");
Test("aaaa", Keys(Enumerable.Repeat(_.UpArrow, 4)));
// Changing the option should affect existing history.
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {HistoryNoDuplicates = true});
Test("zzzz", Keys(Enumerable.Repeat(_.UpArrow, 4)));
SetHistory("aaaa", "bbbb", "bbbb", "cccc");
Test("aaaa", Keys(Enumerable.Repeat(_.UpArrow, 3)));
SetHistory("aaaa", "bbbb", "bbbb", "cccc");
Test("cccc", Keys(
Enumerable.Repeat(_.UpArrow, 3),
Enumerable.Repeat(_.DownArrow, 2)));
// No history
SetHistory();
Test("", Keys(_.UpArrow, _.DownArrow));
}
[TestMethod]
public void TestHistorySearchNoDuplicates()
{
TestSetup(KeyMode.Cmd,
new KeyHandler("UpArrow", PSConsoleReadLine.HistorySearchBackward),
new KeyHandler("DownArrow", PSConsoleReadLine.HistorySearchForward));
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {HistoryNoDuplicates = true});
SetHistory("0000", "echo aaaa", "1111", "echo bbbb", "2222", "echo bbbb", "3333", "echo cccc", "4444");
Test("echo aaaa", Keys("echo", Enumerable.Repeat(_.UpArrow, 3)));
SetHistory("0000", "echo aaaa", "1111", "echo bbbb", "2222", "echo bbbb", "3333", "echo cccc", "4444");
Test("echo cccc", Keys(
"echo",
Enumerable.Repeat(_.UpArrow, 3),
Enumerable.Repeat(_.DownArrow, 2)));
}
[TestMethod]
public void TestInteractiveHistorySearchNoDuplicates()
{
TestSetup(KeyMode.Emacs);
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {HistoryNoDuplicates = true});
SetHistory("0000", "echo aaaa", "1111", "echo bbbb", "2222", "echo bbbb", "3333", "echo cccc", "4444");
Test("echo aaaa", Keys(
_.CtrlR, "echo", _.CtrlR, _.CtrlR));
SetHistory("0000", "echo aaaa", "1111", "echo bbbb", "2222", "echo bbbb", "3333", "echo cccc", "4444");
Test("echo cccc", Keys(
_.CtrlR, "echo", _.CtrlR, _.CtrlR, _.CtrlS, _.CtrlS));
SetHistory("0000", "echo aaaa", "1111", "echo bbbb", "2222", "echo bbbb", "3333", "echo cccc", "4444");
Test("echo aaaa", Keys(
_.CtrlR, "echo", _.CtrlR, _.CtrlR, _.CtrlH, _.CtrlR, _.CtrlR));
}
[TestMethod]
public void TestHistoryCount()
{
TestSetup(KeyMode.Cmd);
SetHistory("zzzz", "aaaa", "bbbb", "cccc");
// There should be 4 items in history, the following should remove the
// oldest history item.
PSConsoleReadLine.SetOptions(new SetPSReadlineOption {MaximumHistoryCount = 3});
Test("aaaa", Keys(Enumerable.Repeat(_.UpArrow, 4)));
Test("zzzz", Keys("zzzz"));
Test("aaaa", Keys("aaaa"));
Test("bbbb", Keys("bbbb"));
Test("cccc", Keys("cccc"));
Test("aaaa", Keys(Enumerable.Repeat(_.UpArrow, 4)));
}
}
}