Increase test coverage.

cmd/main_test.go

@@ -581,3 +581,52 @@ func (suite *Tests) Test_parseExistingSemver() {
 		})
 	}
 }
+
+func (suite *Tests) TestSetup_ListExistingTags() {
+	type fields struct {
+		RepositoryName      string
+		RepositoryLocalPath string
+		RepositoryHandler   *git.Repository
+		LocalConfigFile     string
+		Commits             []CommitDetails
+		Semver              SemVer
+		Wording             Wording
+		Force               Force
+	}
+
+	tests := []struct {
+		name   string
+		fields fields
+		noTags bool
+	}{
+		{
+			name: "List tags from existing repository",
+			fields: fields{
+				RepositoryName: "https://github.com/lukaszraczylo/simple-gql-client",
+			},
+			noTags: false,
+		},
+		{
+			name: "List tags from non-existing repository",
+			fields: fields{
+				RepositoryName: "https://github.com/lukaszraczylo/simple-gql-client-dead",
+			},
+			noTags: true,
+		},
+	}
+	for _, tt := range tests {
+		suite.T().Run(tt.name, func(t *testing.T) {
+			s := &Setup{}
+			s.ReadConfig(tt.fields.LocalConfigFile)
+			s.RepositoryName = tt.fields.RepositoryName
+			s.Force = tt.fields.Force
+			s.Prepare()
+			s.ListExistingTags()
+			if tt.noTags {
+				assert.Equal(len(s.Tags), 0, "Unexpected number of tags in "+tt.name)
+			} else {
+				assert.GreaterOrEqual(len(s.Tags), 1, "Unexpected number of tags in "+tt.name)
+			}
+		})
+	}
+}