@@ -45,7 +45,6 @@ public function testFromString(): void
4545 {
4646 $ dateTime = DateTime::fromString ('2017-12-02 02:20:03 ' );
4747
48- self ::assertInstanceOf (DateTime::class, $ dateTime );
4948 self ::assertEquals ('2017-12-02T02:20:03+01:00 ' , (string ) $ dateTime );
5049 }
5150
@@ -83,7 +82,6 @@ public function testCreateFromMutable(): void
8382 {
8483 $ dateTime = DateTime::createFromMutable (new \DateTime ('2016-05-16 14:09:10 ' ));
8584
86- self ::assertInstanceOf (DateTime::class, $ dateTime );
8785 self ::assertEquals ('2016-05-16T14:09:10+02:00 ' , (string ) $ dateTime );
8886
8987 $ dateTime = DateTime::createFromMutable (new \DateTime ('2016-05-16 14:09:10-04:00 ' ));
@@ -120,7 +118,6 @@ public function testCreateFromInterface(): void
120118 $ phpDateTime = new \DateTime ('2016-05-16 14:32:51.678991 ' );
121119 $ dateTime = DateTime::createFromInterface ($ phpDateTime );
122120
123- self ::assertInstanceOf (DateTime::class, $ dateTime );
124121 self ::assertEquals ('2016-05-16T14:32:51.678991+02:00 ' , (string ) $ dateTime );
125122 }
126123
@@ -154,7 +151,6 @@ public function testAdd(): void
154151
155152 $ dateTime2 = $ dateTime1 ->add ($ interval );
156153
157- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
158154 self ::assertEquals ('2016-05-13T22:37:46+02:00 ' , (string ) $ dateTime2 );
159155
160156 // Immutability check
@@ -168,7 +164,6 @@ public function testSub(): void
168164
169165 $ dateTime2 = $ dateTime1 ->sub ($ interval );
170166
171- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
172167 self ::assertEquals ('2016-05-11T22:37:46+02:00 ' , (string ) $ dateTime2 );
173168
174169 // Immutability check
@@ -180,7 +175,6 @@ public function testModify(): void
180175 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46+02:00 ' );
181176 $ dateTime2 = $ dateTime1 ->modify ('+1 day ' );
182177
183- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
184178 self ::assertEquals ('2016-05-13T22:37:46+02:00 ' , (string ) $ dateTime2 );
185179
186180 // Immutability check
@@ -201,7 +195,6 @@ public function testSetDate(): void
201195 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46+02:00 ' );
202196 $ dateTime2 = $ dateTime1 ->setDate (2011 , 10 , 22 );
203197
204- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
205198 self ::assertEquals ('2011-10-22T22:37:46+02:00 ' , (string ) $ dateTime2 );
206199
207200 // Immutability check
@@ -213,7 +206,6 @@ public function testSetISODate(): void
213206 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46+02:00 ' );
214207 $ dateTime2 = $ dateTime1 ->setISODate (2011 , 42 , 6 );
215208
216- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
217209 self ::assertEquals ('2011-10-22T22:37:46+02:00 ' , (string ) $ dateTime2 );
218210
219211 // Immutability check
@@ -225,7 +217,6 @@ public function testSetTime(): void
225217 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46.123456+02:00 ' );
226218 $ dateTime2 = $ dateTime1 ->setTime (12 , 10 , 15 , 98765 );
227219
228- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
229220 self ::assertEquals ('2016-05-12T12:10:15.098765+02:00 ' , (string ) $ dateTime2 );
230221
231222 // Immutability check
@@ -237,7 +228,6 @@ public function testSetTimestamp(): void
237228 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46+02:00 ' );
238229 $ dateTime2 = $ dateTime1 ->setTimestamp (1463490311 );
239230
240- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
241231 self ::assertEquals ('2016-05-17T15:05:11+02:00 ' , (string ) $ dateTime2 );
242232
243233 // Immutability check
@@ -249,7 +239,6 @@ public function testSetTimezone(): void
249239 $ dateTime1 = DateTime::fromString ('2016-05-12 22:37:46+02:00 ' );
250240 $ dateTime2 = $ dateTime1 ->setTimezone (new \DateTimeZone ('America/New_York ' ));
251241
252- self ::assertInstanceOf (DateTime::class, $ dateTime2 );
253242 self ::assertEquals ('2016-05-12T16:37:46-04:00 ' , (string ) $ dateTime2 );
254243
255244 // Immutability check
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