Add plugin testing.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

plugin_test.go

@@ -0,0 +1,70 @@
+package main
+
+import (
+	"github.com/stretchr/testify/assert"
+
+	"testing"
+)
+
+func TestMissingConfig(t *testing.T) {
+	var plugin Plugin
+
+	err := plugin.Exec()
+
+	assert.NotNil(t, err)
+}
+
+func TestMissingJenkinsConfig(t *testing.T) {
+	plugin := Plugin{
+		Config: Config{
+			BaseURL: "http://example.com",
+		},
+	}
+
+	err := plugin.Exec()
+
+	assert.NotNil(t, err)
+}
+
+func TestPluginTriggerBuild(t *testing.T) {
+	plugin := Plugin{
+		Repo: Repo{
+			Name:  "go-hello",
+			Owner: "appleboy",
+		},
+		Build: Build{
+			Number:  101,
+			Status:  "success",
+			Link:    "https://github.com/appleboy/go-hello",
+			Author:  "Bo-Yi Wu",
+			Branch:  "master",
+			Message: "update by drone line plugin.",
+			Commit:  "e7c4f0a63ceeb42a39ac7806f7b51f3f0d204fd2",
+		},
+
+		Config: Config{
+			BaseURL:  "http://example.com",
+			Username: "foo",
+			Token:    "bar",
+			Job:      []string{"drone-jenkins"},
+		},
+	}
+
+	err := plugin.Exec()
+
+	assert.Nil(t, err)
+}
+
+func TestTrimElement(t *testing.T) {
+	var input, result []string
+
+	input = []string{"1", "     ", "3"}
+	result = []string{"1", "3"}
+
+	assert.Equal(t, result, trimElement(input))
+
+	input = []string{"1", "2"}
+	result = []string{"1", "2"}
+
+	assert.Equal(t, result, trimElement(input))
+}