Turn example files into tests under tests/functional/

15 files changed, 372 insertions, 340 deletions

diff --git a/.gitignore b/.gitignore
index 355edd7..3bb73dd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@
 /src/*cgo*
 /tests/*.a
 /tests/*.bin
+/tests/functional/*.a
+/tests/functional/*.bin
+/tests/functional/*.so
diff --git a/Makefile b/Makefile
index 3089ed9..10af5c8 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ GOLDFLAGS    = -L $(GOLIBDIR)
 
 
 .SUFFIXES:
-.SUFFIXES: .go .a .c .o .bin .bin-check
+.SUFFIXES: .go .a .c .o .so .bin .bin-check
 
 .c.o:
 	$(CC) $(CFLAGS) -o $@ -c $<
@@ -35,6 +35,9 @@ all:
 include deps.mk
 
 
+functional-tests.a   = $(functional-tests.go:.go=.a)
+functional-tests.bin = $(functional-tests.go:.go=.bin)
+
 cgo.go = \
 	src/_cgo_import.go             \
 	src/_cgo_gotypes.go            \
@@ -60,9 +63,10 @@ derived-assets = \
 	src/$(NAME).a                  \
 	tests/$(NAME).a                \
 	tests/main.a                   \
-	tests/libbuild.a               \
 	tests/main.bin                 \
-	tests/libbuild.bin             \
+	$(functional-tests.a)          \
+	$(functional-tests.bin)        \
+	tests/functional/streq.so      \
 
 side-assets = \
 	src/_cgo_export.h              \
@@ -78,6 +82,8 @@ all: $(derived-assets)
 $(derived-assets): Makefile deps.mk
 
 $(cgo.go) $(cgo.c) $(cgo.o): src/_cgo_.o
+
+
 src/_cgo_.o: src/$(NAME).go
 	go tool cgo --objdir $(@D) src/$(NAME).go
 
@@ -95,30 +101,38 @@ tests/$(NAME).a: $(cgo.go) $(cgo.o) src/version.go tests/$(NAME).go
 tests/main.a: tests/main.go tests/$(NAME).a
 	go tool compile $(GOCFLAGS) -o $@ -p $(*F) -I $(@D) $*.go
 
-tests/libbuild.a: tests/libbuild.go src/$(NAME).a
-	go tool compile $(GOCFLAGS) -o $@ -p main  -I src   $*.go
-
 tests/main.bin: tests/main.a
 	go tool link   $(GOLDFLAGS) -o $@ -L $(@D) --extldflags '$(LDLIBS)' $*.a
 
-tests/libbuild.bin: tests/libbuild.a
-	go tool link   $(GOLDFLAGS) -o $@ -L src   --extldflags '$(LDLIBS)' $*.a
-
 src/version.go: Makefile
 	echo 'package $(NAME); const Version = "$(VERSION)"' > $@
 
+$(functional-tests.a): src/$(NAME).a
+	go tool compile $(GOCFLAGS) -o $@ -p main  -I src   $*.go
+
+$(functional-tests.bin):
+	go tool link   $(GOLDFLAGS) -o $@ -L src   --extldflags '$(LDLIBS)' $*.a
+
+tests/functional/streq.so: tests/functional/streq.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -fPIC --shared -o $@ $*.c
+
+
+
+tests/functional/extension.bin-check: tests/functional/streq.so
+	LD_LIBRARY_PATH=$(@D) $(EXEC)$*.bin
 
+functional-tests.bin-check = $(functional-tests-butone.go:.go=.bin-check)
 
 tests.bin-check = \
 	tests/main.bin-check           \
-	tests/libbuild.bin-check       \
+	$(functional-tests.bin-check)  \
 
 tests/main.bin-check: tests/main.bin
-tests/libbuild.bin-check: tests/libbuild.bin
 $(tests.bin-check):
 	$(EXEC)$*.bin
 
 check-unit: $(tests.bin-check)
+check-unit: tests/functional/extension.bin-check
 
 
 integration-tests = \
diff --git a/deps.mk b/deps.mk
index e69de29..5f458e5 100644
--- a/deps.mk
+++ b/deps.mk
@@ -0,0 +1,23 @@
+functional-tests.go = \
+	tests/functional/extension.go \
+	tests/functional/json.go \
+	tests/functional/libbuild.go \
+	tests/functional/limit.go \
+
+functional-tests-butone.go = \
+	tests/functional/json.go \
+	tests/functional/libbuild.go \
+	tests/functional/limit.go \
+
+tests/functional/extension.a:	tests/functional/extension.go
+tests/functional/json.a:	tests/functional/json.go
+tests/functional/libbuild.a:	tests/functional/libbuild.go
+tests/functional/limit.a:	tests/functional/limit.go
+tests/functional/extension.bin:	tests/functional/extension.a
+tests/functional/json.bin:	tests/functional/json.a
+tests/functional/libbuild.bin:	tests/functional/libbuild.a
+tests/functional/limit.bin:	tests/functional/limit.a
+tests/functional/extension.bin-check:	tests/functional/extension.bin
+tests/functional/json.bin-check:	tests/functional/json.bin
+tests/functional/libbuild.bin-check:	tests/functional/libbuild.bin
+tests/functional/limit.bin-check:	tests/functional/limit.bin
diff --git a/doc/examples/fuzz/fuzz_openexec.go b/doc/examples/fuzz/fuzz_openexec.go
deleted file mode 100644
index 5326044..0000000
--- a/doc/examples/fuzz/fuzz_openexec.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package sqlite3_fuzz
-
-import (
-	"bytes"
-	"database/sql"
-	"io/ioutil"
-
-	_ "github.com/mattn/go-sqlite3"
-)
-
-func FuzzOpenExec(data []byte) int {
-	sep := bytes.IndexByte(data, 0)
-	if sep <= 0 {
-		return 0
-	}
-	err := ioutil.WriteFile("/tmp/fuzz.db", data[sep+1:], 0644)
-	if err != nil {
-		return 0
-	}
-	db, err := sql.Open("sqlite3", "/tmp/fuzz.db")
-	if err != nil {
-		return 0
-	}
-	defer db.Close()
-	_, err = db.Exec(string(data[:sep-1]))
-	if err != nil {
-		return 0
-	}
-	return 1
-}
diff --git a/doc/examples/json/json.go b/doc/examples/json/json.go
deleted file mode 100644
index 181934b..0000000
--- a/doc/examples/json/json.go
+++ /dev/null
@@ -1,81 +0,0 @@
-package main
-
-import (
-	"database/sql"
-	"database/sql/driver"
-	"encoding/json"
-	"fmt"
-	_ "github.com/mattn/go-sqlite3"
-	"log"
-	"os"
-)
-
-type Tag struct {
-	Name    string `json:"name"`
-	Country string `json:"country"`
-}
-
-func (t *Tag) Scan(value interface{}) error {
-	return json.Unmarshal([]byte(value.(string)), t)
-}
-
-func (t *Tag) Value() (driver.Value, error) {
-	b, err := json.Marshal(t)
-	return string(b), err
-}
-
-func main() {
-	os.Remove("./foo.db")
-
-	db, err := sql.Open("sqlite3", "./foo.db")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer db.Close()
-
-	_, err = db.Exec(`create table foo (tag jsonb)`)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	stmt, err := db.Prepare("insert into foo(tag) values(?)")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer stmt.Close()
-	_, err = stmt.Exec(`{"name": "mattn", "country": "japan"}`)
-	if err != nil {
-		log.Fatal(err)
-	}
-	_, err = stmt.Exec(`{"name": "michael", "country": "usa"}`)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var country string
-	err = db.QueryRow("select tag->>'country' from foo where tag->>'name' = 'mattn'").Scan(&country)
-	if err != nil {
-		log.Fatal(err)
-	}
-	fmt.Println(country)
-
-	var tag Tag
-	err = db.QueryRow("select tag from foo where tag->>'name' = 'mattn'").Scan(&tag)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	fmt.Println(tag.Name)
-
-	tag.Country = "日本"
-	_, err = db.Exec(`update foo set tag = ? where tag->>'name' == 'mattn'`, &tag)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	err = db.QueryRow("select tag->>'country' from foo where tag->>'name' = 'mattn'").Scan(&country)
-	if err != nil {
-		log.Fatal(err)
-	}
-	fmt.Println(country)
-}
diff --git a/doc/examples/limit/limit.go b/doc/examples/limit/limit.go
deleted file mode 100644
index c1adfe8..0000000
--- a/doc/examples/limit/limit.go
+++ /dev/null
@@ -1,113 +0,0 @@
-package main
-
-import (
-	"database/sql"
-	"fmt"
-	"log"
-	"os"
-	"strings"
-
-	"github.com/mattn/go-sqlite3"
-)
-
-func createBulkInsertQuery(n int, start int) (query string, args []any) {
-	values := make([]string, n)
-	args = make([]any, n*2)
-	pos := 0
-	for i := 0; i < n; i++ {
-		values[i] = "(?, ?)"
-		args[pos] = start + i
-		args[pos+1] = fmt.Sprintf("こんにちは世界%03d", i)
-		pos += 2
-	}
-	query = fmt.Sprintf(
-		"insert into foo(id, name) values %s",
-		strings.Join(values, ", "),
-	)
-	return
-}
-
-func bulkInsert(db *sql.DB, query string, args []any) (err error) {
-	stmt, err := db.Prepare(query)
-	if err != nil {
-		return
-	}
-
-	_, err = stmt.Exec(args...)
-	if err != nil {
-		return
-	}
-
-	return
-}
-
-func main() {
-	var sqlite3conn *sqlite3.SQLiteConn
-	sql.Register("sqlite3_with_limit", &sqlite3.SQLiteDriver{
-		ConnectHook: func(conn *sqlite3.SQLiteConn) error {
-			sqlite3conn = conn
-			return nil
-		},
-	})
-
-	os.Remove("./foo.db")
-	db, err := sql.Open("sqlite3_with_limit", "./foo.db")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer db.Close()
-
-	sqlStmt := `
-	create table foo (id integer not null primary key, name text);
-	delete from foo;
-	`
-	_, err = db.Exec(sqlStmt)
-	if err != nil {
-		log.Printf("%q: %s\n", err, sqlStmt)
-		return
-	}
-
-	if sqlite3conn == nil {
-		log.Fatal("not set sqlite3 connection")
-	}
-
-	limitVariableNumber := sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
-	log.Printf("default SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
-
-	num := 400
-	query, args := createBulkInsertQuery(num, 0)
-	err = bulkInsert(db, query, args)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	smallLimitVariableNumber := 100
-	sqlite3conn.SetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER, smallLimitVariableNumber)
-
-	limitVariableNumber = sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
-	log.Printf("updated SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
-
-	query, args = createBulkInsertQuery(num, num)
-	err = bulkInsert(db, query, args)
-	if err != nil {
-		if err != nil {
-			log.Printf("expect failed since SQLITE_LIMIT_VARIABLE_NUMBER is too small: %v", err)
-		}
-	}
-
-	bigLimitVariableNumber := 999999
-	sqlite3conn.SetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER, bigLimitVariableNumber)
-	limitVariableNumber = sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
-	log.Printf("set SQLITE_LIMIT_VARIABLE_NUMBER: %d", bigLimitVariableNumber)
-	log.Printf("updated SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
-
-	query, args = createBulkInsertQuery(500, num+num)
-	err = bulkInsert(db, query, args)
-	if err != nil {
-		if err != nil {
-			log.Fatal(err)
-		}
-	}
-
-	log.Println("no error if SQLITE_LIMIT_VARIABLE_NUMBER > 999")
-}
diff --git a/doc/examples/mod_regexp/Makefile b/doc/examples/mod_regexp/Makefile
deleted file mode 100644
index 1ef69a6..0000000
--- a/doc/examples/mod_regexp/Makefile
+++ /dev/null
@@ -1,27 +0,0 @@
-ifeq ($(OS),Windows_NT)
-EXE=extension.exe
-LIB_EXT=dll
-RM=cmd /c del
-LDFLAG=
-else
-EXE=extension
-ifeq ($(shell uname -s),Darwin)
-LIB_EXT=dylib
-else
-LIB_EXT=so
-endif
-RM=rm -f
-LDFLAG=-fPIC
-endif
-LIB=sqlite3_mod_regexp.$(LIB_EXT)
-
-all : $(EXE) $(LIB)
-
-$(EXE) : extension.go
-	go build $<
-
-$(LIB) : sqlite3_mod_regexp.c
-	gcc $(LDFLAG) -shared -o $@ $< -lsqlite3 -lpcre
-
-clean :
-	@-$(RM) $(EXE) $(LIB)
diff --git a/doc/examples/mod_regexp/extension.go b/doc/examples/mod_regexp/extension.go
deleted file mode 100644
index 61ceb55..0000000
--- a/doc/examples/mod_regexp/extension.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package main
-
-import (
-	"database/sql"
-	"fmt"
-	"github.com/mattn/go-sqlite3"
-	"log"
-)
-
-func main() {
-	sql.Register("sqlite3_with_extensions",
-		&sqlite3.SQLiteDriver{
-			Extensions: []string{
-				"sqlite3_mod_regexp",
-			},
-		})
-
-	db, err := sql.Open("sqlite3_with_extensions", ":memory:")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer db.Close()
-
-	// Force db to make a new connection in pool
-	// by putting the original in a transaction
-	tx, err := db.Begin()
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer tx.Commit()
-
-	// New connection works (hopefully!)
-	rows, err := db.Query("select 'hello world' where 'hello world' regexp '^hello.*d$'")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer rows.Close()
-	for rows.Next() {
-		var helloworld string
-		rows.Scan(&helloworld)
-		fmt.Println(helloworld)
-	}
-}
diff --git a/doc/examples/mod_regexp/sqlite3_mod_regexp.c b/doc/examples/mod_regexp/sqlite3_mod_regexp.c
deleted file mode 100644
index d3ad149..0000000
--- a/doc/examples/mod_regexp/sqlite3_mod_regexp.c
+++ /dev/null
@@ -1,35 +0,0 @@
-#include <pcre.h>
-#include <string.h>
-#include <stdio.h>
-#include <sqlite3ext.h>
-
-SQLITE_EXTENSION_INIT1
-static void regexp_func(sqlite3_context *context, int argc, sqlite3_value **argv) {
-  if (argc >= 2) {
-    const char *target  = (const char *)sqlite3_value_text(argv[1]);
-    const char *pattern = (const char *)sqlite3_value_text(argv[0]);
-    const char* errstr = NULL;
-    int erroff = 0;
-    int vec[500];
-    int n, rc;
-    pcre* re = pcre_compile(pattern, 0, &errstr, &erroff, NULL);
-    if (!re) {
-      sqlite3_result_error(context, errstr, 0);
-      return;
-    }
-    rc = pcre_exec(re, NULL, target, strlen(target), 0, 0, vec, 500); 
-    if (rc <= 0) {
-      sqlite3_result_int(context, 0);
-      return;
-    }
-    sqlite3_result_int(context, 1);
-  }
-}
-
-#ifdef _WIN32
-__declspec(dllexport)
-#endif
-int sqlite3_extension_init(sqlite3 *db, char **errmsg, const sqlite3_api_routines *api) {
-  SQLITE_EXTENSION_INIT2(api);
-  return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8, (void*)db, regexp_func, NULL, NULL);
-}
diff --git a/mkdeps.sh b/mkdeps.sh
index e5606ff..ceb57af 100755
--- a/mkdeps.sh
+++ b/mkdeps.sh
@@ -2,3 +2,11 @@
 set -eu
 
 export LANG=POSIX.UTF-8
+
+
+find tests/functional/*.go | varlist 'functional-tests.go'
+find tests/functional/*.go -not -name extension.go | varlist 'functional-tests-butone.go'
+
+find tests/functional/*.go | sed 's/^\(.*\)\.go$/\1.a:\t\1.go/'
+find tests/functional/*.go | sed 's/^\(.*\)\.go$/\1.bin:\t\1.a/'
+find tests/functional/*.go | sed 's/^\(.*\)\.go$/\1.bin-check:\t\1.bin/'
diff --git a/tests/functional/extension.go b/tests/functional/extension.go
new file mode 100644
index 0000000..81c4494
--- /dev/null
+++ b/tests/functional/extension.go
@@ -0,0 +1,79 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+	"reflect"
+
+	"golite"
+)
+
+
+
+func fatalif(err error) {
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func eq(given any, expected any) {
+	if !reflect.DeepEqual(given, expected) {
+		fmt.Fprintf(os.Stderr, "given != expected\n")
+		fmt.Fprintf(os.Stderr, "given:    %#v\n", given)
+		fmt.Fprintf(os.Stderr, "expected: %#v\n", expected)
+	}
+}
+
+
+
+func main() {
+	driver := golite.SQLiteDriver{
+		Extensions: []string{
+			"streq",
+		},
+	}
+	sql.Register("sqlite3-streq", &driver)
+
+	db, err := sql.Open("sqlite3-streq", ":memory:")
+	fatalif(err)
+	defer db.Close()
+
+	rows, err := db.Query(`
+		SELECT str, n FROM (
+			SELECT 'hello' as str, 1 as n
+			UNION
+			SELECT 'not'   as str, 2 as n
+			UNION
+			SELECT 'hello' as str, 3 as n
+		) WHERE streq(str, 'hello');
+	`)
+	fatalif(err)
+	defer rows.Close()
+
+	type pairT struct{
+		str string
+		id  int
+	}
+	var pairs []pairT
+	for rows.Next() {
+		var pair pairT
+		err := rows.Scan(&pair.str, &pair.id)
+		fatalif(err)
+		pairs = append(pairs, pair)
+	}
+	fatalif(rows.Err())
+
+	expected := []pairT{
+		pairT{
+			str: "hello",
+			id:  1,
+		},
+		pairT{
+			str: "hello",
+			id:  3,
+		},
+	}
+	eq(pairs, expected)
+}
diff --git a/tests/functional/json.go b/tests/functional/json.go
new file mode 100644
index 0000000..54954f7
--- /dev/null
+++ b/tests/functional/json.go
@@ -0,0 +1,96 @@
+package main
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"log"
+	"os"
+
+	_ "golite"
+)
+
+type Tag struct {
+	Name  string `json:"name"`
+	Place string `json:"place"`
+}
+
+func (t *Tag) Scan(value interface{}) error {
+	return json.Unmarshal([]byte(value.(string)), t)
+}
+
+func (t *Tag) Value() (driver.Value, error) {
+	b, err := json.Marshal(t)
+	return string(b), err
+}
+
+func main() {
+	os.Remove("json.db")
+	defer os.Remove("json.db")
+
+	db, err := sql.Open("sqlite3", "json.db")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	_, err = db.Exec(`create table myjsontable (tag jsonb)`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	stmt, err := db.Prepare("insert into myjsontable(tag) values(?)")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+
+	_, err = stmt.Exec(`{"name": "name1", "place": "right-here"}`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	_, err = stmt.Exec(`{"name": "michael", "place": "usa"}`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var place string
+	err = db.QueryRow("select tag->>'place' from myjsontable where tag->>'name' = 'name1'").Scan(&place)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if place != "right-here" {
+		log.Fatal(errors.New("expected right-here, got: " + place))
+	}
+
+	var tag Tag
+	err = db.QueryRow("select tag from myjsontable where tag->>'name' = 'name1'").Scan(&tag)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if tag.Name != "name1" {
+		log.Fatal(errors.New("expected name1, got: " + tag.Name))
+	}
+	if tag.Place != "right-here" {
+		log.Fatal(errors.New("expected right-here, got: " + tag.Place))
+	}
+
+	tag.Place = "日本"
+	_, err = db.Exec(`update myjsontable set tag = ? where tag->>'name' == 'name1'`, &tag)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = db.QueryRow("select tag->>'place' from myjsontable where tag->>'name' = 'name1'").Scan(&place)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if place != "日本" {
+		log.Fatal(errors.New("expected 日本, got: " + place))
+	}
+}
diff --git a/tests/libbuild.go b/tests/functional/libbuild.go
index 3de29ae..3de29ae 100644
--- a/tests/libbuild.go
+++ b/tests/functional/libbuild.go
diff --git a/tests/functional/limit.go b/tests/functional/limit.go
new file mode 100644
index 0000000..8c65a25
--- /dev/null
+++ b/tests/functional/limit.go
@@ -0,0 +1,102 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"golite"
+)
+
+func createBulkInsertQuery(n int, start int) (string, []any) {
+	values := make([]string, n)
+	args   := make([]any, n*2)
+	pos := 0
+	for i := 0; i < n; i++ {
+		values[i] = "(?, ?)"
+		args[pos] = start + i
+		args[pos+1] = fmt.Sprintf("こんにちは世界%03d", i)
+		pos += 2
+	}
+	query := fmt.Sprintf(
+		"insert into mylimittable(id, name) values %s",
+		strings.Join(values, ", "),
+	)
+	return query, args
+}
+
+func bulkInsert(db *sql.DB, query string, args []any) error {
+	stmt, err := db.Prepare(query)
+	if err != nil {
+		return err
+	}
+
+	_, err = stmt.Exec(args...)
+	return err
+}
+
+func main() {
+	const (
+		num        = 400
+		smallLimit = 100
+		bigLimit   = 999999
+	)
+
+	const SQL = `
+		create table mylimittable (id integer not null primary key, name text);
+		delete from mylimittable;
+	`
+
+	var conn *golite.SQLiteConn
+	sql.Register("sqlite3_with_limit", &golite.SQLiteDriver{
+		ConnectHook: func(c *golite.SQLiteConn) error {
+			conn = c
+			return nil
+		},
+	})
+
+	os.Remove("limit.db")
+	defer os.Remove("limit.db")
+	db, err := sql.Open("sqlite3_with_limit", "limit.db")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	_, err = db.Exec(SQL)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if conn == nil {
+		log.Fatal("not set sqlite3 connection")
+	}
+
+	{
+		query, args := createBulkInsertQuery(num, 0)
+		err := bulkInsert(db, query, args)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	conn.SetLimit(golite.SQLITE_LIMIT_VARIABLE_NUMBER, smallLimit)
+	{
+		query, args := createBulkInsertQuery(num, num)
+		err := bulkInsert(db, query, args)
+		if err == nil {
+			log.Fatal("expected failure didn't happen")
+		}
+	}
+
+	conn.SetLimit(golite.SQLITE_LIMIT_VARIABLE_NUMBER, bigLimit)
+	{
+		query, args := createBulkInsertQuery(500, num+num)
+		err := bulkInsert(db, query, args)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}
diff --git a/tests/functional/streq.c b/tests/functional/streq.c
new file mode 100644
index 0000000..bbf3763
--- /dev/null
+++ b/tests/functional/streq.c
@@ -0,0 +1,36 @@
+#include <assert.h>
+#include <stdbool.h>
+#include <string.h>
+#include <sqlite3ext.h>
+
+
+
+SQLITE_EXTENSION_INIT1
+static void
+streq(sqlite3_context *const ctx, const int argc, sqlite3_value **const argv) {
+	assert(argc == 2);
+	const char *const str1 = (const char *)sqlite3_value_text(argv[0]);
+	const char *const str2 = (const char *)sqlite3_value_text(argv[1]);
+	const bool equal = strcmp(str1, str2) == 0;
+	const int result = equal ? 1 : 0;
+	sqlite3_result_int(ctx, result);
+}
+
+int
+sqlite3_extension_init(
+	sqlite3 *const db,
+	const char *const *const errmsg,
+	const sqlite3_api_routines *const api
+) {
+	SQLITE_EXTENSION_INIT2(api);
+	return sqlite3_create_function(
+		db,
+		"streq",
+		2,
+		SQLITE_UTF8,
+		(void *)db,
+		streq,
+		NULL,
+		NULL
+	);
+}