Add test for printer method

Signed-off-by: jesus m. rodriguez <[email protected]>

internal/gh/printer_test.go

@@ -0,0 +1,105 @@
+// Copyright © 2022 jesus m. rodriguez [email protected]
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gh
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/google/go-github/v47/github"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var expectedLong = `Issue:	123
+State:	open
+
+   Issue 1
+
+`
+var _ = Describe("Printer", func() {
+
+	Describe("PrintGithubIssue", func() {
+		var (
+			issue     *github.Issue
+			r, w, tmp *os.File
+		)
+		BeforeEach(func() {
+			issue = &github.Issue{
+				ID:     github.Int64(12213123),
+				Number: github.Int(123),
+				Title:  github.String("Issue 1"),
+				State:  github.String("open"),
+				Body:   github.String("body of the issue"),
+				URL:    github.String("https://api.github.com/repos/foo/bar/issues/123"),
+			}
+
+			r, w, _ = os.Pipe()
+			tmp = os.Stdout
+			os.Stdout = w
+		})
+		AfterEach(func() {
+			os.Stdout = tmp
+		})
+		It("should print issue in color & one line", func() {
+			go func() {
+				PrintGithubIssue(issue, true, true)
+				w.Close()
+			}()
+
+			stdout, _ := io.ReadAll(r)
+
+			expected := fmt.Sprintf("\033[33m%5d\033[0m \033[32m%s\033[0m %s\n",
+				issue.GetNumber(), issue.GetState(), issue.GetTitle())
+
+			Expect(expected).To(Equal(string(stdout)))
+		})
+		It("should ignore color flag if not printing in oneline", func() {
+			go func() {
+				PrintGithubIssue(issue, false, true)
+				w.Close()
+			}()
+
+			stdout, _ := io.ReadAll(r)
+
+			Expect(expectedLong).To(Equal(string(stdout)))
+		})
+		It("should print in oneline but not in color", func() {
+			go func() {
+				PrintGithubIssue(issue, true, false)
+				w.Close()
+			}()
+
+			stdout, _ := io.ReadAll(r)
+
+			expected := fmt.Sprintf("%5d %s %s\n", issue.GetNumber(),
+				issue.GetState(), issue.GetTitle())
+
+			Expect(expected).To(Equal(string(stdout)))
+		})
+		It("should print full output not in color", func() {
+			go func() {
+				PrintGithubIssue(issue, false, false)
+				w.Close()
+			}()
+
+			stdout, _ := io.ReadAll(r)
+
+			Expect(expectedLong).To(Equal(string(stdout)))
+		})
+	})
+})