migrate patch building tests

pkg/integration/tests/patch_building/apply.go

@@ -0,0 +1,64 @@
+package patch_building
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var Apply = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Apply a custom patch",
+	ExtraCmdArgs: "",
+	Skip:         false,
+	SetupConfig:  func(config *config.AppConfig) {},
+	SetupRepo: func(shell *Shell) {
+		shell.NewBranch("branch-a")
+		shell.CreateFileAndAdd("file1", "first line\n")
+		shell.Commit("first commit")
+
+		shell.NewBranch("branch-b")
+		shell.UpdateFileAndAdd("file1", "first line\nsecond line\n")
+		shell.Commit("update")
+
+		shell.Checkout("branch-a")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Branches().
+			Focus().
+			Lines(
+				Contains("branch-a").IsSelected(),
+				Contains("branch-b"),
+			).
+			Press(keys.Universal.NextItem).
+			PressEnter()
+
+		t.Views().SubCommits().
+			IsFocused().
+			Lines(
+				Contains("update").IsSelected(),
+				Contains("first commit"),
+			).
+			PressEnter()
+
+		t.Views().CommitFiles().
+			IsFocused().
+			Lines(
+				Contains("M file1").IsSelected(),
+			).
+			PressPrimaryAction()
+
+		t.Views().Information().Content(Contains("building patch"))
+
+		t.Views().PatchBuildingSecondary().Content(Contains("second line"))
+
+		t.Actions().SelectPatchOption(MatchesRegexp(`apply patch$`))
+
+		t.Views().Files().
+			Focus().
+			Lines(
+				Contains("file1").IsSelected(),
+			)
+
+		t.Views().Main().
+			Content(Contains("second line"))
+	},
+})