First commit.

conn.go

@@ -0,0 +1,66 @@
+package go_mocket
+
+import (
+	"context"
+	"database/sql/driver"
+	"errors"
+	"strings"
+	"sync"
+)
+
+type FakeConn struct {
+	db     *FakeDB
+	currTx *FakeTx // Transaction pointer
+	mu     sync.Mutex
+	bad    bool
+}
+
+func (c *FakeConn) isBad() bool {
+	return false
+}
+
+func (c *FakeConn) Begin() (driver.Tx, error) {
+	if c.isBad() {
+		return nil, driver.ErrBadConn
+	}
+	if c.currTx != nil {
+		return nil, errors.New("already in a transaction")
+	}
+	c.currTx = &FakeTx{c: c}
+	return c.currTx, nil
+}
+
+func (c *FakeConn) Close() (err error) {
+	c.db = nil
+	return nil
+}
+
+func (c *FakeConn) Exec(query string, args []driver.Value) (driver.Result, error) {
+	panic("ExecContext was not called.")
+}
+
+func (c *FakeConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+	return nil, driver.ErrSkip
+}
+
+func (c *FakeConn) Query(query string, args []driver.Value) (driver.Rows, error) {
+	panic("QueryContext was not called.")
+}
+
+// We do
+func (c *FakeConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
+	return nil, driver.ErrSkip
+}
+
+// Should not be called
+func (c *FakeConn) Prepare(query string) (driver.Stmt, error) {
+	panic("use Prepare")
+}
+
+func (c *FakeConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
+	var firstStmt = &FakeStmt{q: query, connection: c}          // Create statement
+	firstStmt.placeholders = len(strings.Split(query, "?")) - 1 // Checking how many placeholders do we have
+	queryParts := strings.Split(query, " ")                     // By First statement define the query type
+	firstStmt.command = strings.ToUpper(queryParts[0])
+	return firstStmt, nil
+}