Add pagination tests for environments table

app/assets/javascripts/environments/components/environment.js.es6

@@ -128,11 +128,29 @@ module.exports = Vue.component('environment-component', {
     /**
      * Will change the page number and update the URL.
      *
+     * If no search params are present, we'll add param for page
+     * If param for page is already present, we'll update it
+     * If there are params but none for page, we'll add it at the end.
+     *
      * @param  {Number} pageNumber desired page to go to.
      */
     changePage(pageNumber) {
-      const param = window.location.search.replace(/page=\d/g, `page=${pageNumber}`);
+      let param;
+      if (window.location.search.length === 0) {
+        param = `?page=${pageNumber}`;
+      }
+
+      if (window.location.search.indexOf('page') !== -1) {
+        param = window.location.search.replace(/page=\d/g, `page=${pageNumber}`);
+      }
+
+      if (window.location.search.length &&
+        window.location.search.indexOf('page') === -1) {
+        param = `${window.location.search}&page=${pageNumber}`;
+      }
+
       gl.utils.visitUrl(param);
+      return param;
     },
   },
 

app/assets/javascripts/environments/components/environment_item.js.es6

@@ -362,32 +362,6 @@ module.exports = Vue.component('environment-item', {
      *
      * @return {String}
      */
-    buildPath(){
-      return this.model.latest &&
-        this.model.latest.last_deployment &&
-        this.model.latest.last_deployment.deployable &&
-        this.model.latest.last_deployment.deployable.build_path ||
-        '';
-    },
-
-    /**
-     * Verifies the presence of all the keys needed to render the external_url.
-     *
-     * @return {String}
-     */
-    externalURL() {
-      if (this.model.latest && this.model.latest.external_url) {
-        return this.model.latest.external_url;
-      }
-
-      return '';
-    },
-
-    /**
-     * Verifies the presence of all the keys needed to render the buil_path.
-     *
-     * @return {String}
-     */
     buildPath() {
       if (this.model.latest &&
         this.model.latest.last_deployment &&
@@ -398,6 +372,7 @@ module.exports = Vue.component('environment-item', {
 
       return '';
     },
+
     /**
      * Verifies the presence of all the keys needed to render the external_url.
      *

spec/javascripts/environments/environment_spec.js.es6

@@ -99,6 +99,48 @@ describe('Environment', () => {
             done();
           }, 0);
         });
+
+        it('should update url when no search params are present', (done) => {
+          spyOn(gl.utils, 'visitUrl');
+          setTimeout(() => {
+            component.$el.querySelector('.gl-pagination li:nth-child(5) a').click();
+            expect(gl.utils.visitUrl).toHaveBeenCalledWith('?page=2');
+            done();
+          }, 0);
+        });
+
+        it('should update url when page is already present', (done) => {
+          spyOn(gl.utils, 'visitUrl');
+          window.history.pushState({}, null, '?page=1');
+
+          setTimeout(() => {
+            component.$el.querySelector('.gl-pagination li:nth-child(5) a').click();
+            expect(gl.utils.visitUrl).toHaveBeenCalledWith('?page=2');
+            done();
+          }, 0);
+        });
+
+        it('should update url when page and scope are already present', (done) => {
+          spyOn(gl.utils, 'visitUrl');
+          window.history.pushState({}, null, '?scope=all&page=1');
+
+          setTimeout(() => {
+            component.$el.querySelector('.gl-pagination li:nth-child(5) a').click();
+            expect(gl.utils.visitUrl).toHaveBeenCalledWith('?scope=all&page=2');
+            done();
+          }, 0);
+        });
+
+        it('should update url when page and scope are already present and page is first param', (done) => {
+          spyOn(gl.utils, 'visitUrl');
+          window.history.pushState({}, null, '?page=1&scope=all');
+
+          setTimeout(() => {
+            component.$el.querySelector('.gl-pagination li:nth-child(5) a').click();
+            expect(gl.utils.visitUrl).toHaveBeenCalledWith('?page=2&scope=all');
+            done();
+          }, 0);
+        });
       });
     });
   });