Add pagination spec and move totalCount into pagination for further and easier updates

Signed-off-by: Thomas Shawarma Haddad <thomas.haddad@af83.com>

2 files changed, 77 insertions, 0 deletions

diff --git a/spec/javascripts/journey_patterns/reducers_spec.js b/spec/javascripts/journey_patterns/reducers/journey_patterns_spec.js
index 422c97fee..422c97fee 100644
--- a/spec/javascripts/journey_patterns/reducers_spec.js
+++ b/spec/javascripts/journey_patterns/reducers/journey_patterns_spec.js
diff --git a/spec/javascripts/journey_patterns/reducers/pagination_spec.js b/spec/javascripts/journey_patterns/reducers/pagination_spec.js
new file mode 100644
index 000000000..a99e8ff85
--- /dev/null
+++ b/spec/javascripts/journey_patterns/reducers/pagination_spec.js
@@ -0,0 +1,77 @@
+var reducer = require('es6_browserified/journey_patterns/reducers/pagination')
+let state = {
+  page : 2,
+  totalCount : 25
+}
+let currentPage = 2
+const dispatch = function(){}
+
+describe('pagination reducer, given parameters allowing page change', () => {
+
+  it('should return the initial state', () => {
+    expect(
+      reducer(undefined, {})
+    ).toEqual({})
+  })
+
+  it('should handle GO_TO_NEXT_PAGE and change state', () => {
+    expect(
+      reducer(state, {
+        type: 'GO_TO_NEXT_PAGE',
+        dispatch,
+        currentPage,
+        nextPage : true
+      })
+    ).toEqual(Object.assign({}, state, {page : state.page + 1}))
+  })
+
+  it('should return GO_TO_PREVIOUS_PAGE and change state', () => {
+    expect(
+      reducer(state, {
+        type: 'GO_TO_PREVIOUS_PAGE',
+        dispatch,
+        currentPage,
+        nextPage : false
+      })
+    ).toEqual(Object.assign({}, state, {page : state.page - 1}))
+  })
+})
+
+
+describe('pagination reducer, given parameters not allowing to go to previous page', () => {
+
+  beforeEach(()=>{
+    state.page = 1
+    currentPage = 1
+  })
+
+  it('should return GO_TO_PREVIOUS_PAGE and not change state', () => {
+    expect(
+      reducer(state, {
+        type: 'GO_TO_PREVIOUS_PAGE',
+        dispatch,
+        currentPage,
+        nextPage : false
+      })
+    ).toEqual(state)
+  })
+})
+
+describe('pagination reducer, given parameters not allowing to go to next page', () => {
+
+  beforeEach(()=>{
+    state.page = 3
+    currentPage = 3
+  })
+
+  it('should return GO_TO_NEXT_PAGE and not change state', () => {
+    expect(
+      reducer(state, {
+        type: 'GO_TO_NEXT_PAGE',
+        dispatch,
+        currentPage,
+        nextPage : false
+      })
+    ).toEqual(state)
+  })
+})