fix(core): update

ts/smartexpect.classes.assertion.ts

@@ -29,7 +29,7 @@ export class Assertion {
       } else {
         let isOk = false;
         try {
-          runDirectOrNegated(checkFunction())
+          runDirectOrNegated(checkFunction());
         } catch (e) {
           isOk = true;
         }
@@ -37,7 +37,7 @@ export class Assertion {
           throw new Error('Negated assertion is not ok!');
         }
       }
-    }
+    };
 
     if (this.executionMode === 'async') {
       const done = plugins.smartpromise.defer();
@@ -47,14 +47,14 @@ export class Assertion {
         if (this.timeoutSetting) {
           plugins.smartdelay.delayFor(this.timeoutSetting).then(() => {
             if (done.status === 'pending') {
-              done.reject(new Error(`${this.baseReference} timed out at ${this.timeoutSetting}!`))
+              done.reject(new Error(`${this.baseReference} timed out at ${this.timeoutSetting}!`));
             }
           });
         }
-        this.baseReference.then(promiseResultArg => {
+        this.baseReference.then((promiseResultArg) => {
           this.baseReference = promiseResultArg;
           done.resolve(runDirectOrNegated(checkFunction));
-        })
+        });
       }
       return done.promise;
     } else {
@@ -66,7 +66,8 @@ export class Assertion {
     return this.runCheck(() => {
       if (typeof this.baseReference !== 'string') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this.baseReference}`
+          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this
+            .baseReference}`
         );
       }
     });
@@ -76,7 +77,8 @@ export class Assertion {
     return this.runCheck(() => {
       if (typeof this.baseReference !== 'number') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this.baseReference}`
+          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this
+            .baseReference}`
         );
       }
     });
@@ -86,7 +88,8 @@ export class Assertion {
     return this.runCheck(() => {
       if (typeof this.baseReference !== 'boolean') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this.baseReference}`
+          `Assertion failed: ${this.baseReference} is not of type string, but typeof ${typeof this
+            .baseReference}`
         );
       }
     });
@@ -154,4 +157,43 @@ export class Assertion {
       }
     });
   }
+
+  public toBeNull() {
+    return this.runCheck(() => {
+      const result = this.baseReference === null;
+      if (!result) {
+        throw new Error(`${this.baseReference} is not null`);
+      }
+    });
+  }
+
+  public toBeUndefined() {
+    return this.runCheck(() => {
+      const result = this.baseReference === undefined;
+      if (!result) {
+        throw new Error(`${this.baseReference} is not undefined`);
+      }
+    });
+  }
+
+  public toBeNullOrUndefined() {
+    return this.runCheck(() => {
+      const result = this.baseReference === null || this.baseReference === undefined;
+      if (!result) {
+        throw new Error(`${this.baseReference} is not null or undefined`);
+      }
+    });
+  }
+
+  public toContain(itemArg: any) {
+    return this.runCheck(() => {
+      const result = this.baseReference instanceof Array && this.baseReference.find(itemArg2 => {
+        itemArg === itemArg2;
+      })
+      if (!result) {
+        throw new Error(`${this.baseReference} is not contain ${itemArg}`);
+      }
+    });
+    
+  }
 }