Add tests for search.js

1 files changed, 142 insertions, 0 deletions

diff --git a/src/client/react/reducers/search.test.js b/src/client/react/reducers/search.test.js
new file mode 100644
index 0000000..ccf6fae
--- /dev/null
+++ b/src/client/react/reducers/search.test.js
@@ -0,0 +1,142 @@
+window.USERS = [];
+
+const deepFreeze = require('deep-freeze');
+const search = require('./search').default;
+const { changeSelectedResult } = require('../actions/search');
+
+describe('reducers', () => {
+  describe('search', () => {
+    describe('SEARCH/CHANGE_SELECTED_RESULT', () => {
+      it('Does nothing when there are no results', () => {
+        const prevState = {
+          results: [],
+          selectedResult: null,
+          isExactMatch: false,
+        };
+
+        const actionPlus = changeSelectedResult(+1);
+        const actionMin = changeSelectedResult(-1);
+
+        deepFreeze([prevState, actionPlus, actionMin]);
+
+        const nextStatePlus = search(prevState, actionPlus);
+        const nextStateMin = search(prevState, actionMin);
+        expect(nextStatePlus).toEqual(prevState);
+        expect(nextStateMin).toEqual(prevState);
+      });
+
+      it('Does nothing when there is an exact match', () => {
+        const prevState = {
+          results: ['s/18561'],
+          selectedResult: 's/18561',
+          isExactMatch: true,
+        };
+
+        const actionPlus = changeSelectedResult(+1);
+        const actionMin = changeSelectedResult(-1);
+
+        deepFreeze([prevState, actionPlus, actionMin]);
+
+        const nextStatePlus = search(prevState, actionPlus);
+        const nextStateMin = search(prevState, actionMin);
+
+        expect(nextStatePlus).toEqual(prevState);
+        expect(nextStateMin).toEqual(prevState);
+      });
+
+      it('Switches to the correct selectedResult when no selected result is selected', () => {
+        const prevState = {
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: null,
+          isExactMatch: false,
+        };
+
+        const actionPlus = changeSelectedResult(+1);
+        const actionMin = changeSelectedResult(-1);
+
+        deepFreeze([prevState, actionPlus, actionMin]);
+
+        const nextStatePlus = search(prevState, actionPlus);
+        const nextStateMin = search(prevState, actionMin);
+
+        expect(nextStatePlus).toEqual({
+          ...prevState,
+          selectedResult: 's/18561',
+        });
+        expect(nextStateMin).toEqual({
+          ...prevState,
+          selectedResult: 's/18563',
+        });
+      });
+
+      it('Switches to the correct selectedResult when there is a selected result selected', () => {
+        const prevState = {
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: 's/18562',
+          isExactMatch: false,
+        };
+
+        const actionPlus = changeSelectedResult(+1);
+        const actionMin = changeSelectedResult(-1);
+
+        deepFreeze([prevState, actionPlus, actionMin]);
+
+        const nextStatePlus = search(prevState, actionPlus);
+        const nextStateMin = search(prevState, actionMin);
+
+        expect(nextStatePlus).toEqual({
+          ...prevState,
+          selectedResult: 's/18563',
+        });
+        expect(nextStateMin).toEqual({
+          ...prevState,
+          selectedResult: 's/18561',
+        });
+      });
+
+      it('Properly wraps arround when incrementing', () => {
+        expect(search({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: 's/18563',
+          isExactMatch: false,
+        }, changeSelectedResult(+1))).toEqual({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: null,
+          isExactMatch: false,
+        });
+
+        expect(search({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: null,
+          isExactMatch: false,
+        }, changeSelectedResult(+1))).toEqual({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: 's/18561',
+          isExactMatch: false,
+        });
+      });
+
+      it('Properly wraps arround when decrementing', () => {
+        expect(search({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: 's/18561',
+          isExactMatch: false,
+        }, changeSelectedResult(-1))).toEqual({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: null,
+          isExactMatch: false,
+        });
+
+        expect(search({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: null,
+          isExactMatch: false,
+        }, changeSelectedResult(-1))).toEqual({
+          results: ['s/18561', 's/18562', 's/18563'],
+          selectedResult: 's/18563',
+          isExactMatch: false,
+        });
+      });
+    });
+  });
+});