add reducer actions ADD_LEXEME, SET_LEXEME

src/reducers/stateReducer.features.test.js

@@ -0,0 +1,17 @@
+import {stateReducer} from './stateReducer';
+
+describe('Features', () => {
+  const state = {
+    features: [
+      'low', 'high','back', 'rounded', 'sonorant', 
+      'nasal', 'obstruent', 'occlusive', 'plosive', 
+      'prenasalized', 'aspirated', 'coronal', 'anterior'
+    ]
+  };
+  
+  it('features returned unaltered', () => {
+    const action = {type: ''};
+    expect(stateReducer(state, action)).toBe(state);
+  });
+
+});

src/reducers/stateReducer.js

@@ -9,7 +9,21 @@ const stateReducer = (state, action) => {
     case 'INIT': {
       return initState();
     }
-  
+    
+    case 'ADD_LEXEME': {
+      let newLexeme = action.value;
+      if (!newLexeme.epoch) newLexeme.epoch = state.epochs[0].name;
+      return {...state, lexicon:[...state.lexicon, newLexeme]}
+    }
+    
+    case 'SET_LEXICON': {
+      let newLexicon = action.value;
+      newLexicon = newLexicon.map(lexeme => lexeme.epoch 
+        ? lexeme 
+        : {...lexeme, epoch: state.epochs[0].name});
+      return {...state, lexicon: newLexicon}
+    }
+
     default:
       return state;
   }

src/reducers/stateReducer.lexicon.test.js

@@ -0,0 +1,58 @@
+import {stateReducer} from './stateReducer';
+
+describe('Lexicon', () => {
+  const state = {
+    lexicon: [
+      {lexeme:'anta', epoch:'epoch 1'},
+      {lexeme:'anat', epoch:'epoch 1'},
+      {lexeme:'anət', epoch:'epoch 1'},
+      {lexeme:'anna', epoch:'epoch 1'},
+      {lexeme:'tan', epoch:'epoch 1'}, 
+      {lexeme:'ənta', epoch:'epoch 1'}
+    ],
+    epochs: [{name: 'epoch 1'}]
+  };
+  
+  it('lexicon returned unaltered', () => {
+    const action = {type: ''};
+    expect(stateReducer(state, action)).toBe(state);
+  });
+
+  it('lexicon addition without epoch returns updated lexicon with default epoch', () => {
+    const action = {type: 'ADD_LEXEME', value: {lexeme:'ntʰa'}}
+    expect(stateReducer(state, action)).toEqual({...state, lexicon:[...state.lexicon, {lexeme:'ntʰa', epoch:'epoch 1'}]});
+  });
+  
+  it('lexicon addition with epoch returns updated lexicon with correct epoch', () => {
+    const action = {type: 'ADD_LEXEME', value: {lexeme:'ntʰa', epoch: 'epoch 2'}}
+    expect(stateReducer(state, action)).toEqual({...state, lexicon:[...state.lexicon, action.value]});  
+  });
+
+  it('lexicon set returns updated lexicon with correct epoch', () => {
+    const newLexicon = [
+      {lexeme:'anta', epoch:'epoch 1'},
+      {lexeme:'anat', epoch:'epoch 1'},
+      {lexeme:'anət', epoch:'epoch 1'},
+      {lexeme:'anna', epoch:'epoch 1'}
+    ]
+    const action = {type: 'SET_LEXICON', value: newLexicon}
+    expect(stateReducer(state, action)).toEqual({...state, lexicon:newLexicon});
+  });
+  
+  it('lexicon set with no epoch returns updated lexicon with defaul epoch', () => {
+    const newLexicon = [
+      {lexeme:'anta', epoch:'epoch 1'},
+      {lexeme:'anat', epoch:'epoch 1'},
+      {lexeme:'anət', epoch:'epoch 2'},
+      {lexeme:'anna', epoch:'epoch 1'}
+    ]
+    const inputLexicon = [
+      {lexeme:'anta'},
+      {lexeme:'anat'},
+      {lexeme:'anət', epoch:'epoch 2'},
+      {lexeme:'anna'}
+    ]
+    const action = {type: 'SET_LEXICON', value: inputLexicon}
+    expect(stateReducer(state, action)).toEqual({...state, lexicon:newLexicon});
+  })
+});

src/reducers/stateReducer.test.js

@@ -0,0 +1,8 @@
+import {stateReducer} from './stateReducer';
+
+it('default returns state unaltered', () => {
+  const state = {data: 'example'};
+  const action = {type: ''};
+  expect(stateReducer(state, action)).toBe(state);
+});
+