MM-14559 Rewrite existing plugin API tests to exclusively test via actual plugin (#10494)

* initial work on rewriting test cases using the raw literal format

* split out the embedded tests into separate file and implement the test using a generic tester function

* initial work on rewriting test cases using the raw literal format

* split out the embedded tests into separate file and implement the test using a generic tester function

* moved tests to separate dir to avoid conflicts

* removed duplicate files

* added license header

* fixed plugin paths

* moved all trivial tests to separate files
created "meta-test" that scans a folder of api tests and runs them

* remove rpc tests from make

* use fileutil.FindDir instead of pwd
clean up the test files

tests/plugin_tests/test_bots_plugin/main.go

@@ -0,0 +1,117 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package main
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+	"github.com/mattermost/mattermost-server/plugin"
+)
+
+type MyPlugin struct {
+	plugin.MattermostPlugin
+}
+
+func (p *MyPlugin) MessageWillBePosted(c *plugin.Context, post *model.Post) (*model.Post, string) {
+	createdBot, err := p.API.CreateBot(&model.Bot{
+		Username:    "bot",
+		Description: "a plugin bot",
+	})
+
+	if err != nil {
+		return nil, err.Error() + "failed to create bot"
+	}
+
+	fetchedBot, err := p.API.GetBot(createdBot.UserId, false)
+	if err != nil {
+		return nil, err.Error() + "failed to get bot"
+	}
+	if fetchedBot.Description != "a plugin bot" {
+		return nil, "GetBot did not return the expected bot Description"
+	}
+	if fetchedBot.OwnerId != "test_bots_plugin" {
+		return nil, "GetBot did not return the expected bot OwnerId"
+	}
+
+	updatedDescription := createdBot.Description + ", updated"
+	patchedBot, err := p.API.PatchBot(createdBot.UserId, &model.BotPatch{
+		Description: &updatedDescription,
+	})
+	if err != nil {
+		return nil, err.Error() + "failed to patch bot"
+	}
+
+	fetchedBot, err = p.API.GetBot(patchedBot.UserId, false)
+	if err != nil {
+		return nil, err.Error() + "failed to get bot"
+	}
+
+	if fetchedBot.UserId != patchedBot.UserId {
+		return nil, "GetBot did not return the expected bot"
+	}
+	if fetchedBot.Description != "a plugin bot, updated" {
+		return nil, "GetBot did not return the updated bot Description"
+	}
+
+	fetchedBots, err := p.API.GetBots(&model.BotGetOptions{
+		Page:           0,
+		PerPage:        1,
+		OwnerId:        "",
+		IncludeDeleted: false,
+	})
+	if err != nil {
+		return nil, err.Error() + "failed to get bots"
+	}
+
+	if len(fetchedBots) != 1 {
+		return nil, "GetBots did not return a single bot"
+	}
+
+	if fetchedBot.UserId != fetchedBots[0].UserId {
+		return nil, "GetBots did not return the expected bot"
+	}
+	if _, err = p.API.UpdateBotActive(fetchedBot.UserId, false); err != nil {
+		return nil, err.Error() + "failed to disable bot"
+	}
+	if fetchedBot, err = p.API.GetBot(patchedBot.UserId, false); err == nil {
+		return nil, "expected not to find disabled bot"
+	}
+	if _, err = p.API.UpdateBotActive(fetchedBot.UserId, true); err != nil {
+		return nil, err.Error() + "failed to disable bot"
+	}
+	if fetchedBot, err = p.API.GetBot(patchedBot.UserId, false); err != nil {
+		return nil, err.Error() + "failed to get bot after enabling"
+	}
+	if fetchedBot.UserId != patchedBot.UserId {
+		return nil, "GetBot did not return the expected bot after enabling"
+	}
+	if err = p.API.PermanentDeleteBot(patchedBot.UserId); err != nil {
+		return nil, err.Error() + "failed to delete bot"
+	}
+
+	if _, err = p.API.GetBot(patchedBot.UserId, false); err == nil {
+		return nil, err.Error() + "found bot after permanently deleting"
+	}
+	createdBotWithOverriddenCreator, err := p.API.CreateBot(&model.Bot{
+		Username:    "bot",
+		Description: "a plugin bot",
+		OwnerId:     "abc123",
+	})
+	if err != nil {
+		return nil, err.Error() + "failed to create bot with overridden creator"
+	}
+	if fetchedBot, err = p.API.GetBot(createdBotWithOverriddenCreator.UserId, false); err != nil {
+		return nil, err.Error() + "failed to get bot"
+	}
+	if fetchedBot.Description != "a plugin bot" {
+		return nil, "GetBot did not return the expected bot Description"
+	}
+	if fetchedBot.OwnerId != "abc123" {
+		return nil, "GetBot did not return the expected bot OwnerId"
+	}
+	return nil, ""
+}
+
+func main() {
+	plugin.ClientMain(&MyPlugin{})
+}