Video: Leej twg ua qhov ntsuas ntsuas ntsuas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
UNIT TESTING yog ib theem ntawm software kuaj qhov twg ib tug neeg units / cov khoom ntawm ib tug software raug kuaj. Lub hom phiaj yog los xyuas kom meej tias txhua tus chav tsev ntawm cov software ua tau raws li tsim. A chav tsev yog qhov tsawg tshaj plaws testable ib feem ntawm tej software.
Tsuas yog li ntawd, leej twg yuav ua qhov ntsuas ntsuas?
Tsis yog, Chav ntsuas nkaus xwb ua los ntawm cov neeg tsim khoom. A chav tsev yog qhov tsawg tshaj plaws testable ib feem ntawm ib daim ntawv thov xws li zog, chav kawm, cov txheej txheem, interfaces. Chav ntsuas yog ib txoj hauv kev uas ib tus neeg ntawm qhov chaws raug kuaj xyuas seb lawv puas haum rau kev siv.
Ib yam li ntawd, koj yuav ua li cas kuaj chav tsev? Txhawm rau pib, xaiv ib txoj hauv kev, ib hom, lossis lub npe chaw nyob hauv tus lej editor hauv qhov project koj xav tau xeem , right-click, thiab ces xaiv Tsim Kev Xeem Chav . Cov Tsim Kev Xeem Chav dialog qhib qhov twg koj tuaj yeem teeb tsa qhov koj xav tau kuaj tsim nyog.
Ib yam li ntawd, nws raug nug, qhov kev xeem chav tsev nrog piv txwv yog dab tsi?
Piv txwv ntawm Chav ntsuas yog: rau piv txwv yog tias tus tsim tawm tab tom tsim lub voj rau kev tshawb nrhiav kev ua haujlwm ntawm daim ntawv thov uas yog qhov tsawg heev chav tsev ntawm tag nrho cov cai ntawm daim ntawv thov ntawd ces kom paub tseeb tias lub voj tshwj xeeb ua haujlwm zoo lossis tsis yog hu ua chav kuaj.
Dab tsi yog hom kev xeem chav tsev?
Chav ntsuas Cov txheej txheem: Black Box Kev sim - Siv qhov twg tus neeg siv interface, kev tawm tswv yim thiab cov zis raug sim. Lub thawv dawb Kev sim - siv los xeem txhua tus ntawm cov kev coj cwj pwm no raug sim. Grey Box Kev sim - Siv los ua kuaj , kev pheej hmoo thiab kev ntsuas kev ntsuas.
Pom zoo:
Qhov twg nyob rau hauv ib lub rooj ntaub ntawv yuav tsum tau muab tso rau qhov ntsuas ntsuas?
Nyob rau hauv ib lub rooj ntaub ntawv, units ntawm kev ntsuas yuav tsum tau qhia nyob rau hauv cov nqe lus ntawm cov kab uas cov ntaub ntawv muaj nuj nqis teev. Qhov no qhia tau hais tias chav tsev qhia siv rau tag nrho cov ntaub ntawv muaj nuj nqis teev nyob rau hauv kab
Peb lees paub leej twg ua Leej Txiv ntawm pneumatic?
Ctesibius nyob feem ntau ntawm xyoo 285 thiab 222 BC. Nws sau thawj tus ciaj sia rau tam sim no treatises ntawm kev tshawb fawb ntawm compressed cua thiab nws siv nyob rau hauv cov twj. Qhov no, ua ke nrog nws txoj haujlwm ntawm huab cua elasticity-Pneumatica, tau txais nws lub npe ntawm leej txiv ntawm pneumatic
Dab tsi yog qhov ntsuas qhov ntsuas ntau?
Ib txwm nyiam hom kev tshawb fawb tsim uas tau cuam tshuam cov txiaj ntsig-raws li kev ntsuas kev ntsuas yog kev ntsuas ntau. Kev ntsuam xyuas ntau muaj ntau yam ntawm cov cuab yeej sau cov ntaub ntawv suav nrog kev xam phaj, cov lus nug, thiab kev xeem
Dab tsi yog qhov sib txawv ntawm qhov ntsuas qhov ntsuas thiab qhov ntsuas thib ob?
Primary index: nyob rau hauv ib tug sequentially order file, qhov Performance index uas nws search key qhia cov sequential order ntawm cov ntaub ntawv. Kuj hu ua clustering index. Secondary index: ib qho Performance index uas nws qhov tseem ceeb tshawb nrhiav qhia qhov kev txiav txim sib txawv ntawm qhov kev txiav txim ntawm cov ntaub ntawv. Kuj hu ua non-clustering index
Dab tsi yog qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas?
Xav txog nws li no: rhiab heev yog ib qho kev ntsuas ntawm qhov hloov pauv ntawm lub koob yees duab qhov chaw saib uas tsim nyog raws li qhov muaj peev xwm tshawb pom, thiab qhov pib yog qhov ntau npaum li cas ntawm cov lus tsa suab yuav tsum tshwm sim txhawm rau txhawm rau ua rau lub tswb