Error Stack Trace

panic: runtime error: invalid memory address or nil pointer dereference [recovered] panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x521eda] goroutine 6 [running]: testing.tRunner.func1(0xc42006ec30) /usr/local/go/src/testing/testing.go:622 +0x29d panic(0x6b9e20, 0x8667e0) /usr/local/go/src/runtime/panic.go:489 +0x2cf database/sql.(*DB).conn(0x0, 0x8444c0, 0xc420016e78, 0x1, 0x0, 0x1, 0xc42000e0c8) /usr/local/go/src/database/sql/sql.go:896 +0x3a database/sql.(*DB).query(0x0, 0x8444c0, 0xc420016e78, 0x71dd25, 0x3f, 0xc420119d60, 0x1, 0x1, 0xc420010c01, 0xc4200156b0, ...) /usr/local/go/src/database/sql/sql.go:1245 +0x5b database/sql.(*DB).QueryContext(0x0, 0x8444c0, 0xc420016e78, 0x71dd25, 0x3f, 0xc420119d60, 0x1, 0x1, 0x7f3d01106000, 0x0, ...) /usr/local/go/src/database/sql/sql.go:1227 +0xb8 database/sql.(*DB).QueryRowContext(0x0, 0x8444c0, 0xc420016e78, 0x71dd25, 0x3f, 0xc420119d60, 0x1, 0x1, 0xc42010e400) /usr/local/go/src/database/sql/sql.go:1317 +0x90 database/sql.(*DB).QueryRow(0x0, 0x71dd25, 0x3f, 0xc420119d60, 0x1, 0x1, 0x1) /usr/local/go/src/database/sql/sql.go:1325 +0x7c url-shortener-test.createURL(0x843e40, 0xc42001b380, 0xc42000ac00, 0xc4200f1300, 0x1, 0x1) url-shortener-test/_test/_obj_test/main.go:95 +0x257 url-shortener-test/vendor/github.com/julienschmidt/httprouter.(*Router).ServeHTTP(0xc42003df60, 0x843e40, 0xc42001b380, 0xc42000ac00) /home/andy/go/src/url-shortener-test/vendor/github.com/julienschmidt/httprouter/router.go:344 +0x813 url-shortener-test.TestCreateURL(0xc42006ec30) /home/andy/go/src/url-shortener-test/main_test.go:24 +0x221 testing.tRunner(0xc42006ec30, 0x7207a0) /usr/local/go/src/testing/testing.go:657 +0x96 created by testing.(*T).Run /usr/local/go/src/testing/testing.go:697 +0x2ca --- FAIL: TestCreateURL (0.00s) exit status 2 FAIL url-shortener-test 0.007s