Add test for plugin install command from GitHub

cmd/plugin_install_test.go

@@ -0,0 +1,45 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_pluginInstallCmd(t *testing.T) {
+	// Create a test config file.
+	pluginConfigFile := "./test.yaml"
+	output, err := executeCommandC(rootCmd, "plugin", "init", "-p", pluginConfigFile)
+	assert.NoError(t, err, "plugin init should not return an error")
+	assert.Equal(t,
+		fmt.Sprintf("Config file '%s' was created successfully.", pluginConfigFile),
+		output,
+		"plugin init command should have returned the correct output")
+	assert.FileExists(t, pluginConfigFile, "plugin init command should have created a config file")
+
+	// Test plugin install command.
+	output, err = executeCommandC(
+		rootCmd, "plugin", "install",
+		"github.com/gatewayd-io/[email protected]", "-p", pluginConfigFile)
+	assert.NoError(t, err, "plugin install should not return an error")
+	fmt.Println(output)
+	assert.Contains(t, output, "Downloading https://github.com/gatewayd-io/gatewayd-plugin-cache/releases/download/v0.2.4/gatewayd-plugin-cache-linux-amd64-v0.2.4.tar.gz") //nolint:lll
+	assert.Contains(t, output, "Downloading https://github.com/gatewayd-io/gatewayd-plugin-cache/releases/download/v0.2.4/checksums.txt")                                   //nolint:lll
+	assert.Contains(t, output, "Download completed successfully")
+	assert.Contains(t, output, "Checksum verification passed")
+	assert.Contains(t, output, "Plugin binary extracted to plugins/gatewayd-plugin-cache")
+	assert.Contains(t, output, "Plugin installed successfully")
+
+	// See if the plugin was actually installed.
+	output, err = executeCommandC(rootCmd, "plugin", "list", "-p", pluginConfigFile)
+	assert.NoError(t, err, "plugin list should not return an error")
+	assert.Contains(t, output, "Name: gatewayd-plugin-cache")
+
+	// Clean up.
+	assert.NoError(t, os.RemoveAll("plugins/"))
+	assert.NoError(t, os.Remove("checksums.txt"))
+	assert.NoError(t, os.Remove("gatewayd-plugin-cache-linux-amd64-v0.2.4.tar.gz"))
+	assert.NoError(t, os.Remove(pluginConfigFile))
+}