Test_Ctx_JSON() — fiber Function Reference

Architecture documentation for the Test_Ctx_JSON() function in ctx_test.go from the fiber codebase.

Function go FiberCore Context

Entity Profile

FiberCore→ Context→ Test_Ctx_JSON() — fiber Function Reference

Dependency Diagram

graph TD
  bb2c7974_fbb3_472a_f969_74777ec14c0d["Test_Ctx_JSON()"]
  7b3d4933_5ae3_f84d_ff6d_0cb34e268026["ctx_test.go"]
  bb2c7974_fbb3_472a_f969_74777ec14c0d -->|defined in| 7b3d4933_5ae3_f84d_ff6d_0cb34e268026
  style bb2c7974_fbb3_472a_f969_74777ec14c0d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

ctx_test.go lines 5837–5891

func Test_Ctx_JSON(t *testing.T) {
	t.Parallel()
	app := New()
	c := app.AcquireCtx(&fasthttp.RequestCtx{})

	require.Error(t, c.JSON(complex(1, 1)))

	// Test without ctype
	err := c.JSON(Map{ // map has no order
		"Name": "Grame",
		"Age":  20,
	})
	require.NoError(t, err)
	require.JSONEq(t, `{"Age":20,"Name":"Grame"}`, string(c.Response().Body()))
	require.Equal(t, "application/json; charset=utf-8", string(c.Response().Header.Peek("content-type")))

	// Test with ctype
	err = c.JSON(Map{ // map has no order
		"Name": "Grame",
		"Age":  20,
	}, "application/problem+json")
	require.NoError(t, err)
	require.JSONEq(t, `{"Age":20,"Name":"Grame"}`, string(c.Response().Body()))
	require.Equal(t, "application/problem+json", string(c.Response().Header.Peek("content-type")))

	testEmpty := func(v any, r string) {
		err := c.JSON(v)
		require.NoError(t, err)
		require.Equal(t, r, string(c.Response().Body()))
	}

	testEmpty(nil, "null")
	testEmpty("", `""`)
	testEmpty(0, "0")
	testEmpty([]int{}, "[]")

	t.Run("custom json encoder", func(t *testing.T) {
		t.Parallel()

		app := New(Config{
			JSONEncoder: func(_ any) ([]byte, error) {
				return []byte(`["custom","json"]`), nil
			},
		})
		c := app.AcquireCtx(&fasthttp.RequestCtx{})

		err := c.JSON(Map{ // map has no order
			"Name": "Grame",
			"Age":  20,
		})
		require.NoError(t, err)
		require.Equal(t, `["custom","json"]`, string(c.Response().Body()))
		require.Equal(t, "application/json; charset=utf-8", string(c.Response().Header.Peek("content-type")))
	})
}