118 lines
2.4 KiB
V
118 lines
2.4 KiB
V
import json
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struct TestTwin {
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id int
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seed string
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pubkey string
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}
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struct TestTwins {
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mut:
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twins []TestTwin [required]
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}
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fn test_json_decode_fails_to_decode_unrecognised_array_of_dicts() {
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data := '[{"twins":[{"id":123,"seed":"abcde","pubkey":"xyzasd"},{"id":456,"seed":"dfgdfgdfgd","pubkey":"skjldskljh45sdf"}]}]'
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json.decode(TestTwins, data) or {
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assert err.msg() == "expected field 'twins' is missing"
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return
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}
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assert false
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}
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fn test_json_decode_works_with_a_dict_of_arrays() {
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data := '{"twins":[{"id":123,"seed":"abcde","pubkey":"xyzasd"},{"id":456,"seed":"dfgdfgdfgd","pubkey":"skjldskljh45sdf"}]}'
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res := json.decode(TestTwins, data) or {
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assert false
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exit(1)
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}
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assert res.twins[0].id == 123
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assert res.twins[0].seed == 'abcde'
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assert res.twins[0].pubkey == 'xyzasd'
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assert res.twins[1].id == 456
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assert res.twins[1].seed == 'dfgdfgdfgd'
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assert res.twins[1].pubkey == 'skjldskljh45sdf'
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}
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struct Mount {
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size u64
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}
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fn test_decode_u64() ? {
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data := '{"size": 10737418240}'
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m := json.decode(Mount, data)?
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assert m.size == 10737418240
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// println(m)
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}
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//
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pub struct Comment {
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pub mut:
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id string
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comment string
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}
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pub struct Task {
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mut:
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description string
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id int
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total_comments int
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file_name string [skip]
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comments []Comment [skip]
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}
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fn test_skip_fields_should_be_initialised_by_json_decode() ? {
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data := '{"total_comments": 55, "id": 123}'
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mut task := json.decode(Task, data)?
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assert task.id == 123
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assert task.total_comments == 55
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assert task.comments == []
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}
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//
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struct DbConfig {
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host string
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dbname string
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user string
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}
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fn test_decode_error_message_should_have_enough_context_empty() {
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json.decode(DbConfig, '') or {
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assert err.msg().len < 2
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return
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}
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assert false
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}
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fn test_decode_error_message_should_have_enough_context_just_brace() {
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json.decode(DbConfig, '{') or {
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assert err.msg() == '{'
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return
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}
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assert false
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}
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fn test_decode_error_message_should_have_enough_context_trailing_comma_at_end() {
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txt := '{
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"host": "localhost",
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"dbname": "alex",
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"user": "alex",
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}'
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json.decode(DbConfig, txt) or {
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assert err.msg() == ' "user": "alex",\n}'
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return
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}
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assert false
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}
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fn test_decode_error_message_should_have_enough_context_in_the_middle() {
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txt := '{"host": "localhost", "dbname": "alex" "user": "alex", "port": "1234"}'
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json.decode(DbConfig, txt) or {
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assert err.msg() == 'ost", "dbname": "alex" "user":'
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return
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}
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assert false
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}
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