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check_load_csv.c
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check_load_csv.c
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/* vi:set ts=4 sw=4 expandtab:
*
* Copyright 2016, Chris Leishman (http://github.com/cleishm)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "../config.h"
#include "../src/lib/cypher-parser.h"
#include "memstream.h"
#include <check.h>
#include <errno.h>
#include <unistd.h>
static cypher_parse_result_t *result;
static char *memstream_buffer;
static size_t memstream_size;
static FILE *memstream;
static void setup(void)
{
result = NULL;
memstream = open_memstream(&memstream_buffer, &memstream_size);
fputc('\n', memstream);
}
static void teardown(void)
{
cypher_parse_result_free(result);
fclose(memstream);
free(memstream_buffer);
}
START_TEST (parse_load_csv)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse(
"LOAD CSV FROM 'file:///movies.csv' AS m RETURN m;",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 49);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
"@0 0..49 statement body=@1\n"
"@1 0..49 > query clauses=[@2, @5]\n"
"@2 0..40 > > LOAD CSV url=@3, identifier=@4\n"
"@3 14..34 > > > string \"file:///movies.csv\"\n"
"@4 38..39 > > > identifier `m`\n"
"@5 40..48 > > RETURN projections=[@6]\n"
"@6 47..48 > > > projection expression=@7\n"
"@7 47..48 > > > > identifier `m`\n";
ck_assert_str_eq(memstream_buffer, expected);
ck_assert_int_eq(cypher_parse_result_ndirectives(result), 1);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
ck_assert_int_eq(cypher_astnode_type(ast), CYPHER_AST_STATEMENT);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
ck_assert_int_eq(cypher_astnode_type(query), CYPHER_AST_QUERY);
ck_assert_int_eq(cypher_ast_query_nclauses(query), 2);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_LOAD_CSV);
ck_assert(!cypher_ast_load_csv_has_with_headers(clause));
const cypher_astnode_t *url = cypher_ast_load_csv_get_url(clause);
ck_assert_int_eq(cypher_astnode_type(url), CYPHER_AST_STRING);
ck_assert_str_eq(cypher_ast_string_get_value(url), "file:///movies.csv");
const cypher_astnode_t *id = cypher_ast_load_csv_get_identifier(clause);
ck_assert_int_eq(cypher_astnode_type(id), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(id), "m");
const cypher_astnode_t *field_terminator =
cypher_ast_load_csv_get_field_terminator(clause);
ck_assert_ptr_eq(field_terminator, NULL);
}
END_TEST
START_TEST (parse_load_csv_with_headers)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse(
"LOAD CSV WITH HEADERS FROM {source} AS m RETURN m;",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 50);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
"@0 0..50 statement body=@1\n"
"@1 0..50 > query clauses=[@2, @5]\n"
"@2 0..41 > > LOAD CSV WITH HEADERS, url=@3, identifier=@4\n"
"@3 27..35 > > > parameter $`source`\n"
"@4 39..40 > > > identifier `m`\n"
"@5 41..49 > > RETURN projections=[@6]\n"
"@6 48..49 > > > projection expression=@7\n"
"@7 48..49 > > > > identifier `m`\n";
ck_assert_str_eq(memstream_buffer, expected);
ck_assert_int_eq(cypher_parse_result_ndirectives(result), 1);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
ck_assert_int_eq(cypher_astnode_type(ast), CYPHER_AST_STATEMENT);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
ck_assert_int_eq(cypher_astnode_type(query), CYPHER_AST_QUERY);
ck_assert_int_eq(cypher_ast_query_nclauses(query), 2);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_LOAD_CSV);
ck_assert(cypher_ast_load_csv_has_with_headers(clause));
const cypher_astnode_t *url = cypher_ast_load_csv_get_url(clause);
ck_assert_int_eq(cypher_astnode_type(url), CYPHER_AST_PARAMETER);
ck_assert_str_eq(cypher_ast_parameter_get_name(url), "source");
const cypher_astnode_t *id = cypher_ast_load_csv_get_identifier(clause);
ck_assert_int_eq(cypher_astnode_type(id), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(id), "m");
const cypher_astnode_t *field_terminator =
cypher_ast_load_csv_get_field_terminator(clause);
ck_assert_ptr_eq(field_terminator, NULL);
}
END_TEST
START_TEST (parse_load_csv_with_field_terminator)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse(
"LOAD CSV FROM {source} AS m FIELDTERMINATOR '|' RETURN m;",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 57);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
"@0 0..57 statement body=@1\n"
"@1 0..57 > query clauses=[@2, @6]\n"
"@2 0..48 > > LOAD CSV url=@3, identifier=@4, field_terminator=@5\n"
"@3 14..22 > > > parameter $`source`\n"
"@4 26..27 > > > identifier `m`\n"
"@5 44..47 > > > string \"|\"\n"
"@6 48..56 > > RETURN projections=[@7]\n"
"@7 55..56 > > > projection expression=@8\n"
"@8 55..56 > > > > identifier `m`\n";
ck_assert_str_eq(memstream_buffer, expected);
ck_assert_int_eq(cypher_parse_result_ndirectives(result), 1);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
ck_assert_int_eq(cypher_astnode_type(ast), CYPHER_AST_STATEMENT);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
ck_assert_int_eq(cypher_astnode_type(query), CYPHER_AST_QUERY);
ck_assert_int_eq(cypher_ast_query_nclauses(query), 2);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_LOAD_CSV);
ck_assert(!cypher_ast_load_csv_has_with_headers(clause));
const cypher_astnode_t *url = cypher_ast_load_csv_get_url(clause);
ck_assert_int_eq(cypher_astnode_type(url), CYPHER_AST_PARAMETER);
ck_assert_str_eq(cypher_ast_parameter_get_name(url), "source");
const cypher_astnode_t *id = cypher_ast_load_csv_get_identifier(clause);
ck_assert_int_eq(cypher_astnode_type(id), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(id), "m");
const cypher_astnode_t *field_terminator =
cypher_ast_load_csv_get_field_terminator(clause);
ck_assert_int_eq(cypher_astnode_type(field_terminator), CYPHER_AST_STRING);
ck_assert_str_eq(cypher_ast_string_get_value(field_terminator), "|");
}
END_TEST
TCase* load_csv_tcase(void)
{
TCase *tc = tcase_create("load_csv");
tcase_add_checked_fixture(tc, setup, teardown);
tcase_add_test(tc, parse_load_csv);
tcase_add_test(tc, parse_load_csv_with_headers);
tcase_add_test(tc, parse_load_csv_with_field_terminator);
return tc;
}