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package coderd

import (

"context"

"encoding/json"

"net/http"

"net/http/httptest"

"testing"

"github.com/google/uuid"

"github.com/stretchr/testify/require"

"github.com/coder/coder/v2/codersdk"

)

func TestPagination(t *testing.T) {

t.Parallel()

const invalidValues = "Query parameters have invalid values"

testCases := []struct {

Name string

AfterID string

Limit string

Offset string

ExpectedError string

ExpectedParams codersdk.Pagination

}{

{

Name: "BadAfterID",

AfterID: "bogus",

ExpectedError: invalidValues,

},

{

Name: "ShortAfterID",

AfterID: "ff22a7b-bb6f-43d8-83e1-eefe0a1f5197",

ExpectedError: invalidValues,

},

{

Name: "LongAfterID",

AfterID: "cff22a7b-bb6f-43d8-83e1-eefe0a1f51972",

ExpectedError: invalidValues,

},

{

Name: "BadLimit",

Limit: "bogus",

ExpectedError: invalidValues,

},

{

Name: "TooHighLimit",

Limit: "2147483648",

ExpectedError: invalidValues,

},

{

Name: "NegativeLimit",

Limit: "-1",

ExpectedError: invalidValues,

},

{

Name: "BadOffset",

Offset: "bogus",

ExpectedError: invalidValues,

},

{

Name: "TooHighOffset",

Offset: "2147483648",

ExpectedError: invalidValues,

},

{

Name: "NegativeOffset",

Offset: "-1",

ExpectedError: invalidValues,

},

// Valid values

{

Name: "ValidAllParams",

AfterID: "d6c1c331-bfc8-44ef-a0d2-d2294be6195a",

Offset: "100",

Limit: "50",

ExpectedParams: codersdk.Pagination{

AfterID: uuid.MustParse("d6c1c331-bfc8-44ef-a0d2-d2294be6195a"),

Limit: 50,

Offset: 100,

},

},

{

Name: "ValidLimit",

Limit: "50",

ExpectedParams: codersdk.Pagination{

AfterID: uuid.Nil,

Limit: 50,

},

},

{

Name: "ValidOffset",

Offset: "150",

ExpectedParams: codersdk.Pagination{

AfterID: uuid.Nil,

Offset: 150,

},

},

{

Name: "ValidAfterID",

AfterID: "5f2005fc-acc4-4e5e-a7fa-be017359c60b",

ExpectedParams: codersdk.Pagination{

AfterID: uuid.MustParse("5f2005fc-acc4-4e5e-a7fa-be017359c60b"),

},

},

}

for _, c := range testCases {

c := c

t.Run(c.Name, func(t *testing.T) {

t.Parallel()

rw := httptest.NewRecorder()

r, err := http.NewRequestWithContext(context.Background(), "GET", "https://example.com", nil)

require.NoError(t, err, "new request")

// Set query params

query := r.URL.Query()

query.Set("after_id", c.AfterID)

query.Set("limit", c.Limit)

query.Set("offset", c.Offset)

r.URL.RawQuery = query.Encode()

params, ok := parsePagination(rw, r)

if c.ExpectedError == "" {

require.True(t, ok, "expect ok")

require.Equal(t, c.ExpectedParams, params, "expected params")

} else {

require.False(t, ok, "expect !ok")

require.Equal(t, http.StatusBadRequest, rw.Code, "bad request status code")

var apiError codersdk.Error

err := json.NewDecoder(rw.Body).Decode(&apiError)

require.NoError(t, err, "decode response")

require.Contains(t, apiError.Message, c.ExpectedError, "expected error")

}

})

}

}