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1 | #!/usr/bin/perl |
2 | |
3 | use warnings; |
4 | use strict; |
5 | use Test::More qw/no_plan/; |
6 | use Test::Exception; |
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7 | use Test::Differences; |
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8 | use FindBin qw/$Bin/; |
9 | |
10 | use SQL::Translator; |
11 | |
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12 | |
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13 | ### Set $ENV{SQLTTEST_RT_DEBUG} = 1 for more output |
14 | |
15 | # What tests to run - parser/producer name, and optional args |
16 | my $plan = [ |
17 | { |
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18 | engine => 'XML', |
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19 | req => 'XML::LibXML', |
20 | }, |
21 | { |
22 | engine => 'YAML', |
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23 | }, |
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24 | |
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25 | { |
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26 | engine => 'SQLite', |
27 | producer_args => {}, |
28 | parser_args => {}, |
29 | }, |
30 | { |
31 | engine => 'MySQL', |
32 | producer_args => {}, |
33 | parser_args => {}, |
34 | }, |
35 | { |
36 | engine => 'MySQL', |
37 | name => 'MySQL 5.0', |
38 | producer_args => { mysql_version => 5 }, |
39 | parser_args => { mysql_parser_version => 5 }, |
40 | }, |
41 | { |
42 | engine => 'MySQL', |
43 | name => 'MySQL 5.1', |
44 | producer_args => { mysql_version => '5.1' }, |
45 | parser_args => { mysql_parser_version => '5.1' }, |
46 | }, |
47 | { |
48 | engine => 'PostgreSQL', |
49 | producer_args => {}, |
50 | parser_args => {}, |
51 | }, |
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52 | { |
53 | engine => 'SQLServer', |
54 | producer_args => {}, |
55 | parser_args => {}, |
56 | }, |
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57 | |
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58 | # { |
59 | # engine => 'Oracle', |
60 | # producer_args => {}, |
61 | # parser_args => {}, |
62 | # todo => 'Needs volunteers', |
63 | # }, |
64 | # { |
65 | # engine => 'Sybase', |
66 | # producer_args => {}, |
67 | # parser_args => {}, |
68 | # todo => 'Needs volunteers', |
69 | # }, |
70 | # { |
71 | # engine => 'DB2', |
72 | # producer_args => {}, |
73 | # parser_args => {}, |
74 | # todo => 'Needs volunteers', |
75 | # }, |
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76 | |
77 | # There is no Access producer |
78 | # { |
79 | # engine => 'Access', |
80 | # producer_args => {}, |
81 | # parser_args => {}, |
82 | # }, |
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83 | ]; |
84 | |
85 | |
86 | # This data file has the right mix of table/view/procedure/trigger |
87 | # definitions, and lists enough quirks to trip up most combos |
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88 | my $base_file = "$Bin/data/roundtrip_autogen.yaml"; |
89 | open (my $base_fh, '<', $base_file) or die "$base_file: $!"; |
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90 | |
91 | my $base_t = SQL::Translator->new; |
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92 | $base_t->$_ (1) for qw/add_drop_table no_comments/; |
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93 | |
94 | my $base_schema = $base_t->translate ( |
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95 | parser => 'YAML', |
96 | data => do { local $/; <$base_fh>; }, |
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97 | ) or die $base_t->error; |
98 | |
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99 | |
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100 | #assume there is at least one table |
101 | my $string_re = { |
102 | XML => qr/<tables>\s*<table/, |
103 | YAML => qr/\A---\n.+tables\:/s, |
104 | SQL => qr/^\s*CREATE TABLE/m, |
105 | }; |
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106 | |
107 | for my $args (@$plan) { |
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108 | SKIP: { |
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109 | $args->{name} ||= $args->{engine}; |
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110 | |
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111 | my @req = ref $args->{req} ? @{$args->{req}} : $args->{req}||(); |
112 | my @missing; |
113 | for (@req) { |
114 | eval "require $_"; |
115 | push @missing, $_ if ($@); |
116 | } |
117 | if (@missing) { |
118 | skip sprintf ('Need %s for %s roundtrip test', |
119 | join (', ', @missing), |
120 | $args->{name}, |
121 | ); |
122 | } |
123 | |
124 | TODO: { |
125 | local $TODO = $args->{todo} if $args->{todo}; |
126 | |
127 | lives_ok ( |
128 | sub { check_roundtrip ($args, $base_schema) }, |
129 | "Round trip for $args->{name} did not throw an exception", |
130 | ); |
131 | } |
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132 | } |
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133 | } |
134 | |
135 | |
136 | sub check_roundtrip { |
137 | my ($args, $base_schema) = @_; |
138 | my $base_t = $base_schema->translator; |
139 | |
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140 | # create some output from the submitted schema |
141 | my $base_out = $base_t->translate ( |
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142 | data => $base_schema, |
143 | producer => $args->{engine}, |
144 | producer_args => $args->{producer_args}, |
145 | ); |
146 | |
147 | like ( |
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148 | $base_out, |
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149 | $string_re->{$args->{engine}} || $string_re->{SQL}, |
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150 | "Received some meaningful output from the first $args->{name} production", |
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151 | ) or do { |
152 | diag ( _gen_diag ($base_t->error) ); |
153 | return; |
154 | }; |
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155 | |
156 | # parse the sql back |
157 | my $parser_t = SQL::Translator->new; |
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158 | $parser_t->$_ (1) for qw/add_drop_table no_comments/; |
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159 | my $mid_schema = $parser_t->translate ( |
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160 | data => $base_out, |
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161 | parser => $args->{engine}, |
162 | parser_args => $args->{parser_args}, |
163 | ); |
164 | |
165 | isa_ok ($mid_schema, 'SQL::Translator::Schema', "First $args->{name} parser pass produced a schema:") |
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166 | or do { |
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167 | diag (_gen_diag ( $parser_t->error, $base_out ) ); |
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168 | return; |
169 | }; |
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170 | |
171 | # schemas should be comparable at least as far as table/field numbers go |
172 | is_deeply ( |
173 | _get_table_info ($mid_schema->get_tables), |
174 | _get_table_info ($base_schema->get_tables), |
175 | "Schema tables generally match afer $args->{name} parser trip", |
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176 | ) or return; |
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177 | |
178 | # and produce sql once again |
179 | |
180 | # Producing a schema with a Translator different from the one the schema was generated |
181 | # from does not work. This is arguably a bug, 61translator_agnostic.t works with that |
182 | # my $producer_t = SQL::Translator->new; |
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183 | # $producer_t->$_ (1) for qw/add_drop_table no_comments/; |
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184 | |
185 | # my $rt_sql = $producer_t->translate ( |
186 | # data => $mid_schema, |
187 | # producer => $args->{engine}, |
188 | # producer_args => $args->{producer_args}, |
189 | # ); |
190 | |
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191 | my $rt_out = $parser_t->translate ( |
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192 | data => $mid_schema, |
193 | producer => $args->{engine}, |
194 | producer_args => $args->{producer_args}, |
195 | ); |
196 | |
197 | like ( |
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198 | $rt_out, |
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199 | $string_re->{$args->{engine}} || $string_re->{SQL}, |
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200 | "Received some meaningful output from the second $args->{name} production", |
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201 | ) or do { |
202 | diag ( _gen_diag ( $parser_t->error ) ); |
203 | return; |
204 | }; |
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205 | |
206 | # the two sql strings should be identical |
207 | my $msg = "$args->{name} SQL roundtrip successful - SQL statements match"; |
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208 | $ENV{SQLTTEST_RT_DEBUG} #stringify below because IO::Scalar does not behave nice |
209 | ? eq_or_diff ("$rt_out", "$base_out", $msg) |
210 | : ok ("$rt_out" eq "$base_out", $msg) |
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211 | ; |
212 | } |
213 | |
214 | sub _get_table_info { |
215 | my @tables = @_; |
216 | |
217 | my @info; |
218 | |
219 | for my $t (@tables) { |
220 | push @info, { |
221 | name => $t->name, |
222 | fields => [ |
223 | map { $_->name } ($t->get_fields), |
224 | ], |
225 | }; |
226 | } |
227 | |
228 | return \@info; |
229 | } |
230 | |
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231 | # takes an error string and an optional output block |
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232 | # returns the string conctenated with a line-numbered block for |
233 | # easier reading |
234 | sub _gen_diag { |
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235 | my ($err, $out) = @_; |
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236 | |
237 | return 'Unknown error' unless $err; |
238 | |
239 | |
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240 | if ($out and $ENV{SQLTTEST_RT_DEBUG}) { |
241 | my @lines; |
242 | for (split /\n/, $out) { |
243 | push @lines, sprintf ('%03d: %s', |
244 | scalar @lines + 1, |
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245 | $_, |
246 | ); |
247 | } |
248 | |
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249 | return "$err\n\n" . join ("\n", @lines); |
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250 | } |
251 | |
252 | return $err; |
253 | } |