From a7b971ef64f09a21902f34b6078b01d78dcf73e7 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Wed, 30 Aug 2017 16:36:40 -0400
Subject: Implement threshold under

---
 __tests__/dice.test.js   | 23 ++++++++++++++++++++++-
 __tests__/lexer.test.js  | 10 ++++++++++
 __tests__/parser.test.js | 10 ++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)

(limited to '__tests__')

diff --git a/__tests__/dice.test.js b/__tests__/dice.test.js
index 272f436..fb8a155 100644
--- a/__tests__/dice.test.js
+++ b/__tests__/dice.test.js
@@ -13,7 +13,8 @@ const {
   keepLow,
   again,
   againUnder,
-  threshold
+  threshold,
+  thresholdLow
 } = require('../src/dice.js')
 
 const defaultNumberRolls = 500
@@ -625,4 +626,24 @@ describe('threshold', () => {
       }
     })
   })
+
+  describe('4t3d10', () => {
+    const die = thresholdLow(constant(4), d(constant(3), constant(10)))
+
+    testDie(die, {
+      diceCount: 3,
+      average: {
+        average: 1.2
+      },
+      variance: {
+        variance: 0.72
+      },
+      bounds: {
+        low: 0,
+        high: 3,
+        expectLow: true,
+        expectHigh: true
+      }
+    })
+  })
 })
diff --git a/__tests__/lexer.test.js b/__tests__/lexer.test.js
index 25ef816..b51c0f9 100644
--- a/__tests__/lexer.test.js
+++ b/__tests__/lexer.test.js
@@ -225,5 +225,15 @@ describe('lex', () => {
         { type: 'constant', value: 10 }
       ])
     })
+
+    test('8t3d10', () => {
+      expect(lex('8t3d10')).toEqual([
+        { type: 'constant', value: 8 },
+        { type: 't' },
+        { type: 'constant', value: 3 },
+        { type: 'd' },
+        { type: 'constant', value: 10 }
+      ])
+    })
   })
 })
diff --git a/__tests__/parser.test.js b/__tests__/parser.test.js
index ad67fc4..6e575b6 100644
--- a/__tests__/parser.test.js
+++ b/__tests__/parser.test.js
@@ -241,6 +241,16 @@ describe('parse', () => {
         right: { type: 'constant', value: 8 }
       }
     })
+
+    expect(parse('7t4d8')).toEqual({
+      type: 't',
+      left: { type: 'constant', value: 7 },
+      right: {
+        type: 'd',
+        left: { type: 'constant', value: 4 },
+        right: { type: 'constant', value: 8 }
+      }
+    })
   })
 
   describe('parsing parentheses', () => {
-- 
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