[MM-25268] Implement prefix/suffix searching on teams and channel page in system console (#14698)

* Implement prefix/suffix search on teams page

* Make Channel Page prefix/suffix search as well

* address PR comments

* add tests

* fix styling

* take postgres into account

* add more api tests

* update test

* add team store test

* write store test for team and channel

* fix lint

* update description

* revert go mod

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

api4/team_test.go

@@ -1220,18 +1220,74 @@ func TestSearchAllTeamsPaged(t *testing.T) {
 		teams[i] = newTeam
 	}
 
+	foobarTeam, err := th.App.CreateTeam(&model.Team{
+		DisplayName: "FOOBAR",
+		Name:        "whatever",
+		Type:        model.TEAM_OPEN,
+		Email:       th.GenerateTestEmail(),
+	})
+	require.Nil(t, err)
+
 	testCases := []struct {
 		Name               string
 		Search             *model.TeamSearch
 		ExpectedTeams      []string
 		ExpectedTotalCount int64
 	}{
+		{
+			Name:               "Get foobar channel",
+			Search:             &model.TeamSearch{Term: "oob", Page: model.NewInt(0), PerPage: model.NewInt(100)},
+			ExpectedTeams:      []string{foobarTeam.Id},
+			ExpectedTotalCount: 1,
+		},
+		{
+			Name:               "Get foobar channel",
+			Search:             &model.TeamSearch{Term: "foo", Page: model.NewInt(0), PerPage: model.NewInt(100)},
+			ExpectedTeams:      []string{foobarTeam.Id},
+			ExpectedTotalCount: 1,
+		},
+		{
+			Name:               "Get foobar channel",
+			Search:             &model.TeamSearch{Term: "bar", Page: model.NewInt(0), PerPage: model.NewInt(100)},
+			ExpectedTeams:      []string{foobarTeam.Id},
+			ExpectedTotalCount: 1,
+		},
+		{
+			Name:               "Get foobar channel",
+			Search:             &model.TeamSearch{Term: "what", Page: model.NewInt(0), PerPage: model.NewInt(100)},
+			ExpectedTeams:      []string{foobarTeam.Id},
+			ExpectedTotalCount: 1,
+		},
+		{
+			Name:               "Get foobar channel",
+			Search:             &model.TeamSearch{Term: "ever", Page: model.NewInt(0), PerPage: model.NewInt(100)},
+			ExpectedTeams:      []string{foobarTeam.Id},
+			ExpectedTotalCount: 1,
+		},
 		{
 			Name:               "Get all teams on one page",
 			Search:             &model.TeamSearch{Term: commonRandom, Page: model.NewInt(0), PerPage: model.NewInt(100)},
 			ExpectedTeams:      []string{teams[0].Id, teams[1].Id, teams[2].Id},
 			ExpectedTotalCount: 3,
 		},
+		{
+			Name:               "Get all teams on one page with partial word",
+			Search:             &model.TeamSearch{Term: commonRandom[11:18]},
+			ExpectedTeams:      []string{teams[0].Id, teams[1].Id, teams[2].Id},
+			ExpectedTotalCount: 3,
+		},
+		{
+			Name:               "Get all teams on one page with term upper cased",
+			Search:             &model.TeamSearch{Term: strings.ToUpper(commonRandom)},
+			ExpectedTeams:      []string{teams[0].Id, teams[1].Id, teams[2].Id},
+			ExpectedTotalCount: 3,
+		},
+		{
+			Name:               "Get all teams on one page with some of term upper and some lower",
+			Search:             &model.TeamSearch{Term: commonRandom[0:11] + strings.ToUpper(commonRandom[11:18]+commonRandom[18:])},
+			ExpectedTeams:      []string{teams[0].Id, teams[1].Id, teams[2].Id},
+			ExpectedTotalCount: 3,
+		},
 		{
 			Name:               "Get 2 teams on the first page",
 			Search:             &model.TeamSearch{Term: commonRandom, Page: model.NewInt(0), PerPage: model.NewInt(2)},