sudoku-funpark/export/renderJSON_test.go

package export

import (
	"encoding/json"
	"testing"

	"gitea.ligthert.net/golang/sudoku-funpark/controller"
	"gitea.ligthert.net/golang/sudoku-funpark/outputter"
)

// This function will test the renderJSON function.
// Starts off by creating a new Export struct.
// Creates a new Controller struct.
// Adds a solution to the Controller struct.
// Then it will execute the renderJSON function.
// Check if the output is a JSON string.
func TestRenderJSON(t *testing.T) {

	// Create a new Export struct.
	export := Export{}
	outp := outputter.Outputter{}
	outp.OutputType = "short"
	export.Controller = &controller.Controller{Outputter: &outp}

	// Create a new Controller struct.
	controller := controller.Controller{}
	controller.Solutions = append(controller.Solutions, []string{"123456789", "987654321", "123456789", "987654321", "123456789", "987654321", "123456789", "987654321", "123456789"})

	// Add a solution to the Controller struct.
	export.Controller = &controller

	// Execute the renderJSON function.
	render := export.renderJSON()

	// Check if the output is a JSON string and not empty.
	if render == "" {
		t.Error("Expected a non-empty JSON string, got", render)
	}

	// Check if the output is a JSON string.\
	if render != "[{\"order\":0,\"row1\":\"123456789\",\"row2\":\"987654321\",\"row3\":\"123456789\",\"row4\":\"987654321\",\"row5\":\"123456789\",\"row6\":\"987654321\",\"row7\":\"123456789\",\"row8\":\"987654321\",\"row9\":\"123456789\"}]" {
		t.Error("Expected a JSON string, got", render)
	}

	// Check if the outpt is a valid JSON string.
	// Check using the json.Unmarshal function.
	// If the output is not a valid JSON string, the Unmarshal function will throw an error.
	var result []map[string]interface{}
	err := json.Unmarshal([]byte(render), &result)
	if err != nil {
		t.Error("Expected a valid JSON string, got", render)
	}

}