To test your IMA implementation, copy and paste one of the following ad tag URLs (example in the HTML5 Get started guide):
Single Inline Linear
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dlinear&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single Skippable Inline
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_preroll_skippable&sz=640x480&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single Redirect Linear
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dredirectlinear&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single Redirect Error
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dredirecterror&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single Redirect Broken (Fallback)
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dredirecterror&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&nofb=1&correlator=
Single VPAID 2.0 Linear
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dlinearvpaid2js&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single VPAID 2.0 Non-Linear
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/single_ad_samples&sz=640x480&cust_params=sample_ct%3Dnonlinearvpaid2js&ciu_szs=728x90%2C300x250&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
Single Non-linear Inline
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/nonlinear_ad_samples&sz=480x70&cust_params=sample_ct%3Dnonlinear&ciu_szs=300x250%2C728x90&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Session Ad Rule Pre-roll
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sar%3Da0f2&ciu_szs=300x250&ad_rule=1&gdfp_req=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Pre-roll
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpreonly&ciu_szs=300x250%2C728x90&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Pre-roll + Bumper
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpreonlybumper&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Post-roll
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpostonly&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Post-roll + Bumper
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpostonlybumper&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&correlator=
VMAP Pre-, Mid-, and Post-rolls, Single Ads
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpost&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
VMAP - Pre-roll Single Ad, Mid-roll Standard Pod with 3 ads, Post-roll Single Ad
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpostpod&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
VMAP - Pre-roll Single Ad, Mid-roll Optimized Pod with 3 Ads, Post-roll Single Ad
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpostoptimizedpod&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
VMAP - Pre-roll Single Ad, Mid-roll Standard Pod with 3 Ads, Post-roll Single Ad (bumpers around all ad breaks)
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpostpodbumper&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
VMAP - Pre-roll Single Ad, Mid-roll Optimized Pod with 3 Ads, Post-roll Single Ad (bumpers around all ad breaks)
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpostoptimizedpodbumper&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
VMAP - Pre-roll Single Ad, Mid-roll Standard Pods with 5 Ads Every 10 Seconds, Post-roll Single Ad
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/vmap_ad_samples&sz=640x480&cust_params=sample_ar%3Dpremidpostlongpod&ciu_szs=300x250&gdfp_req=1&ad_rule=1&output=vmap&unviewed_position_start=1&env=vp&impl=s&cmsid=496&vid=short_onecue&correlator=
SIMID Survey Pre-roll
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/simid&description_url=https%3A%2F%2Fdevelopers.google.com%2Finteractive-media-ads&sz=640x480&gdfp_req=1&output=vast&unviewed_position_start=1&env=vp&impl=s&correlator=
OM SDK Sample Pre-roll
https://pubads.g.doubleclick.net/gampad/ads?iu=/21775744923/external/omid_ad_samples&env=vp&gdfp_req=1&output=vast&sz=640x480&description_url=http%3A%2F%2Ftest_site.com%2Fhomepage&vpmute=0&vpa=0&vad_format=linear&url=http%3A%2F%2Ftest_site.com&vpos=preroll&unviewed_position_start=1&correlator=