add integration test for deleting a range of lines in the staging panel

test/integration/stagingTwo/expected/.git_keep/COMMIT_EDITMSG

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+file1

test/integration/stagingTwo/expected/.git_keep/HEAD

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+ref: refs/heads/master

test/integration/stagingTwo/expected/.git_keep/config

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+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = true
+[user]
+	email = CI@example.com
+	name = CI

test/integration/stagingTwo/expected/.git_keep/description

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+Unnamed repository; edit this file 'description' to name the repository.

test/integration/stagingTwo/expected/.git_keep/info/exclude

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+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~
+.DS_Store

test/integration/stagingTwo/expected/.git_keep/logs/HEAD

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+0000000000000000000000000000000000000000 f793cf3fd99464dbd3499093e95197229b771b11 CI <CI@example.com> 1642495374 +1100	commit (initial): file1

test/integration/stagingTwo/expected/.git_keep/logs/refs/heads/master

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+0000000000000000000000000000000000000000 f793cf3fd99464dbd3499093e95197229b771b11 CI <CI@example.com> 1642495374 +1100	commit (initial): file1

test/integration/stagingTwo/expected/.git_keep/refs/heads/master

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+f793cf3fd99464dbd3499093e95197229b771b11

test/integration/stagingTwo/expected/one.txt

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+package oscommands
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/common"
+	"github.com/jesseduffield/lazygit/pkg/utils"
+)
+
+// NewDummyOSCommand creates a new dummy OSCommand for testing
+func NewDummyOSCommand() *OSCommand {
+	osCmd := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+
+	return osCmd
+}
+
+type OSCommandDeps struct {
+	Common       *common.Common
+	Platform     *Platform
+	GetenvFn     func(string) string
+	RemoveFileFn func(string) error
+	Cmd          *CmdObjBuilder
+}
+
+func NewDummyOSCommandWithDeps(deps OSCommandDeps) *OSCommand {
+	common := deps.Common
+	if common == nil {
+		common = utils.NewDummyCommon()
+	}
+
+	platform := deps.Platform
+	if platform == nil {
+		platform = dummyPlatform
+	}
+
+	return &OSCommand{
+		Common:       common,
+		Platform:     platform,
+		getenvFn:     deps.GetenvFn,
+		removeFileFn: deps.RemoveFileFn,
+		guiIO:        NewNullGuiIO(utils.NewDummyLog()),
+		Cmd:          deps.Cmd,
+	}
+}
+
+func NewDummyCmdObjBuilder(runner ICmdObjRunner) *CmdObjBuilder {
+	return &CmdObjBuilder{
+		runner:   runner,
+		platform: dummyPlatform,
+	}
+}
+
+var dummyPlatform = &Platform{
+	OS:              "darwin",
+	Shell:           "bash",
+	ShellArg:        "-c",
+	OpenCommand:     "open {{filename}}",
+	OpenLinkCommand: "open {{link}}",
+}
+
+func NewDummyOSCommandWithRunner(runner *FakeCmdObjRunner) *OSCommand {
+	osCommand := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+	osCommand.Cmd = NewDummyCmdObjBuilder(runner)
+
+	return osCommand
+}

test/integration/stagingTwo/files/one.txt

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+package oscommands
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/common"
+	"github.com/jesseduffield/lazygit/pkg/utils"
+)
+
+// NewDummyOSCommand creates a new dummy OSCommand for testing
+func NewDummyOSCommand() *OSCommand {
+	osCmd := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+
+	return osCmd
+}
+
+type OSCommandDeps struct {
+	Common       *common.Common
+	Platform     *Platform
+	GetenvFn     func(string) string
+	RemoveFileFn func(string) error
+	Cmd          *CmdObjBuilder
+}
+
+func NewDummyOSCommandWithDeps(deps OSCommandDeps) *OSCommand {
+	common := deps.Common
+	if common == nil {
+		common = utils.NewDummyCommon()
+	}
+
+	platform := deps.Platform
+	if platform == nil {
+		platform = dummyPlatform
+	}
+
+	return &OSCommand{
+		Common:       common,
+		Platform:     platform,
+		getenvFn:     deps.GetenvFn,
+		removeFileFn: deps.RemoveFileFn,
+		guiIO:        NewNullGuiIO(utils.NewDummyLog()),
+	}
+}
+
+func NewDummyCmdObjBuilder(runner ICmdObjRunner) *CmdObjBuilder {
+	return &CmdObjBuilder{
+		runner:   runner,
+		platform: dummyPlatform,
+	}
+}
+
+var dummyPlatform = &Platform{
+	OS:              "darwin",
+	Shell:           "bash",
+	ShellArg:        "-c",
+	OpenCommand:     "open {{filename}}",
+	OpenLinkCommand: "open {{link}}",
+}
+
+func NewDummyOSCommandWithRunner(runner *FakeCmdObjRunner) *OSCommand {
+	osCommand := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+	osCommand.Cmd = NewDummyCmdObjBuilder(runner)
+
+	return osCommand
+}

test/integration/stagingTwo/files/one_new.txt

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+package oscommands
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/common"
+	"github.com/jesseduffield/lazygit/pkg/utils"
+)
+
+// NewDummyOSCommand creates a new dummy OSCommand for testing
+func NewDummyOSCommand() *OSCommand {
+	osCmd := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+
+	return osCmd
+}
+
+type OSCommandDeps struct {
+	Common       *common.Common
+	Platform     *Platform
+	GetenvFn     func(string) string
+	RemoveFileFn func(string) error
+	Cmd          *CmdObjBuilder
+}
+
+func NewDummyOSCommandWithDeps(deps OSCommandDeps) *OSCommand {
+	if deps.Cmd == nil {
+		panic("WHAT")
+	}
+	common := deps.Common
+	if common == nil {
+		common = utils.NewDummyCommon()
+	}
+
+	platform := deps.Platform
+	if platform == nil {
+		platform = dummyPlatform
+	}
+
+	return &OSCommand{
+		Common:       common,
+		Platform:     platform,
+		getenvFn:     deps.GetenvFn,
+		removeFileFn: deps.RemoveFileFn,
+		guiIO:        NewNullGuiIO(utils.NewDummyLog()),
+		Cmd:          deps.Cmd,
+	}
+}
+
+func NewDummyCmdObjBuilder(runner ICmdObjRunner) *CmdObjBuilder {
+	return &CmdObjBuilder{
+		runner:   runner,
+		platform: dummyPlatform,
+	}
+}
+
+var dummyPlatform = &Platform{
+	OS:              "darwin",
+	Shell:           "bash",
+	ShellArg:        "-c",
+	OpenCommand:     "open {{filename}}",
+	OpenLinkCommand: "open {{link}}",
+}
+
+func NewDummyOSCommandWithRunner(runner *FakeCmdObjRunner) *OSCommand {
+	osCommand := NewOSCommand(utils.NewDummyCommon(), dummyPlatform, NewNullGuiIO(utils.NewDummyLog()))
+	osCommand.Cmd = NewDummyCmdObjBuilder(runner)
+
+	return osCommand
+}

test/integration/stagingTwo/recording.json

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+{"KeyEvents":[{"Timestamp":843,"Mod":0,"Key":13,"Ch":13},{"Timestamp":1122,"Mod":0,"Key":256,"Ch":118},{"Timestamp":1266,"Mod":0,"Key":258,"Ch":0},{"Timestamp":1386,"Mod":0,"Key":258,"Ch":0},{"Timestamp":1602,"Mod":0,"Key":256,"Ch":100},{"Timestamp":1851,"Mod":0,"Key":13,"Ch":13},{"Timestamp":2520,"Mod":0,"Key":27,"Ch":0},{"Timestamp":3195,"Mod":0,"Key":256,"Ch":113}],"ResizeEvents":[{"Timestamp":0,"Width":272,"Height":74}]}

test/integration/stagingTwo/setup.sh

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+#!/bin/sh
+
+cd $1
+
+git init
+
+git config user.email "CI@example.com"
+git config user.name "CI"
+
+cp ../files/one.txt one.txt
+git add .
+git commit -am file1
+
+cp ../files/one_new.txt one.txt

test/integration/stagingTwo/test.json

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+{
+  "description": "Some more line-by-line staging",
+  "speed": 20
+}