Add more shell exececutor tests

pkg/course/shellSecrets_test.go

@@ -76,3 +76,50 @@ func Test_executor_Get(t *testing.T) {
 		})
 	}
 }
+
+func Test_newShellExecutor(t *testing.T) {
+	type args struct {
+		script []string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    *executor
+		wantErr bool
+	}{
+		{
+			name: "basic",
+			args: args{[]string{"echo", "-n", "hello"}},
+			want: &executor{
+				Executable: "/bin/echo",
+				Args:       []string{"-n", "hello"},
+			},
+			wantErr: false,
+		},
+		{
+			name: "no args",
+			args: args{[]string{"echo"}},
+			want: &executor{
+				Executable: "/bin/echo",
+				Args:       []string{},
+			},
+			wantErr: false,
+		},
+		{
+			name:    "no args",
+			args:    args{[]string{"farglebargleshouldreallynotbeanexecutable"}},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := newShellExecutor(tt.args.script)
+			if tt.wantErr {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.EqualValues(t, tt.want, got)
+			}
+		})
+	}
+}