From a2ba0c21bc1e59f8269051458266896cb928f905 Mon Sep 17 00:00:00 2001 From: Joe Wreschnig Date: Tue, 13 May 2014 19:04:33 +0200 Subject: [PATCH 1/1] Add tests and build scripts. --- .gitignore | 3 ++ Makefile | 54 ++++++++++++++++++++ demo.html | 4 +- string-lerp.js | 12 ++--- tests/string-lerp.js | 118 +++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 182 insertions(+), 9 deletions(-) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 tests/string-lerp.js diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c169afd --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +build +node_modules +*.min.js diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..5dfff02 --- /dev/null +++ b/Makefile @@ -0,0 +1,54 @@ +#!/usr/bin/make -f + +JSTEST ?= node_modules/.bin/jstest +JSHINT ?= node_modules/.bin/jshint +UGLIFY ?= node_modules/.bin/uglifyjs +SOURCES = string-lerp.js +MINIFIED = $(SOURCES:.js=.min.js) + +TESTS = $(wildcard tests/*.js); +LINT_TARGETS = $(addprefix build/stamp/,$(addsuffix .lint,$(SOURCES))) +TEST_TARGETS = $(addprefix build/stamp/,$(addsuffix .test,$(SOURCES))) + +.PHONY: all check lint test + +all: $(MINIFIED) + +%.min.js: %.js $(UGLIFY) + $(UGLIFY) -m < $< > $@ + +build: + mkdir -p build/stamp build/dist + +build/stamp/%.lint: % build + @mkdir -p $(@D) + $(JSHINT) $< + @touch $@ + +build/stamp/%.test: tests/% % build + @mkdir -p $(@D) + @echo $(JSTEST) $< + @$(JSTEST) $< > $@ || (cat $@ && rm -f $@ && exit 1) + @touch $@ + +check: lint test + +lint: $(JSHINT) $(LINT_TARGETS) + +test: $(JSTEST) $(TEST_TARGETS) + +clean: + rm -rf build + rm -f $(MINIFIED) + +distclean: clean + rm -rf node_modules + +$(JSTEST): + npm install jstest + +$(JSHINT): + npm install jshint + +$(UGLIFY): + npm install uglify-js diff --git a/demo.html b/demo.html index c8712c9..8506eb7 100644 --- a/demo.html +++ b/demo.html @@ -23,8 +23,8 @@

- - + +

1) return b; var n = a.length * b.length; - return (n && n < MAX_MATRIX_SIZE) - ? diffLerp(a, b, p) - : fastLerp(a, b, p); + return ((n && n < MAX_MATRIX_SIZE) ? diffLerp : fastLerp)(a, b, p); } exports.levenshteinMatrix = levenshteinMatrix; diff --git a/tests/string-lerp.js b/tests/string-lerp.js new file mode 100644 index 0000000..2e7f01f --- /dev/null +++ b/tests/string-lerp.js @@ -0,0 +1,118 @@ +var JS = this.JS || require('jstest'); +var m = require('../string-lerp'); + +JS.Test.describe('fast lerp', function () { with (this) { + var lerp = m.fastLerp; + var A = "Do you like green eggs and ham?"; + var B = "I do not like them, Sam-I-am."; + + it("handles empty strings", function () { with (this) { + assertEqual("", lerp("", "", -1)); + assertEqual("", lerp("", "", 0)); + assertEqual("", lerp("", "", 0.5)); + assertEqual("", lerp("", "", 1)); + assertEqual("", lerp("", "", 2)); + }}); + + it("maintains identity", function () { with (this) { + for (var i = -1; i < 2; i += 1/1024) { + assertEqual(A, lerp(A, A, i)); + assertEqual(B, lerp(B, B, i)); + } + }}); + + it("handles lows", function () { with (this) { + assertEqual(A, lerp(A, B, -Infinity)); + assertEqual(A, lerp(A, B, -1)); + assertEqual(A, lerp(A, B, 0)); + }}); + + it("handles highs", function () { with (this) { + assertEqual(B, lerp(A, B, 1)); + assertEqual(B, lerp(A, B, 2)); + assertEqual(B, lerp(A, B, Infinity)); + }}); + + it("crams strings together", function () { with (this) { + assertEqual("I do not ke green eggs and ham?", lerp(A, B, 0.3)); + assertEqual("I do not like tn eggs and ham?", lerp(A, B, 0.5)); + assertEqual("I do not like them, Sam-I-am?", lerp(A, B, 0.98)); + }}); +}}); + +JS.Test.describe('diff lerp', function () { with (this) { + var lerp = m.diffLerp; + var A = "Do you like green eggs and ham?"; + var B = "I do not like them, Sam-I-am."; + + it("handles empty strings", function () { with (this) { + assertEqual("", lerp("", "", -1)); + assertEqual("", lerp("", "", 0)); + assertEqual("", lerp("", "", 0.5)); + assertEqual("", lerp("", "", 1)); + assertEqual("", lerp("", "", 2)); + }}); + + it("maintains identity", function () { with (this) { + for (var i = -1; i < 2; i += 1/1024) { + assertEqual(A, lerp(A, A, i)); + assertEqual(B, lerp(B, B, i)); + } + }}); + + it("handles lows", function () { with (this) { + assertEqual(A, lerp(A, B, -Infinity)); + assertEqual(A, lerp(A, B, -1)); + assertEqual(A, lerp(A, B, 0)); + }}); + + it("handles highs", function () { with (this) { + assertEqual(B, lerp(A, B, 1)); + assertEqual(B, lerp(A, B, 2)); + assertEqual(B, lerp(A, B, Infinity)); + }}); + + it("edits strings", function () { with (this) { + assertEqual("Do you like green eggsSam-I-am.", lerp(A, B, 0.3)); + assertEqual("Do you like green Sam-I-am.", lerp(A, B, 0.5)); + assertEqual("do not like them, Sam-I-am.", lerp(A, B, 0.9)); + }}); +}}); + +JS.Test.describe('numeric lerp', function () { with (this) { + var lerp = m.numericLerp; + + it("handles empty strings", function () { with (this) { + assertEqual("", lerp("", "", -1)); + assertEqual("", lerp("", "", 0)); + assertEqual("", lerp("", "", 0.5)); + assertEqual("", lerp("", "", 1)); + assertEqual("", lerp("", "", 2)); + }}); + + it("handles single numbers", function () { with (this) { + assertEqual("0", lerp("0", "100", 0)); + assertEqual("50", lerp("0", "100", 0.5)); + assertEqual("100", lerp("0", "100", 1.0)); + assertEqual("150", lerp("0", "100", 1.5)); + }}); + + it("rounds integers", function () { with (this) { + assertEqual("12", lerp("0", "100", 0.123)); + assertEqual("12.3", lerp("0", "100.0", 0.123)); + assertEqual("12.3", lerp("0.0", "100", 0.123)); + assertEqual("12.3", lerp("0.0", "100.0", 0.123)); + }}); + + it("computes parameters outside [0, 1]", function () { with (this) { + assertEqual("Giving 110%", lerp("Giving 0%", "Giving 100%", 1.1)); + }}); + + it("handles multiple numbers", function () { with (this) { + var A = "Chapter 0. The sky was rgb(0, 0, 0)." + var B = "Chapter 10. The sky was rgb(0, 0, 255)." + assertEqual(A, lerp(A, B, 0)); + assertEqual(B, lerp(A, B, 1)); + assertEqual("Chapter 5. The sky was rgb(0, 0, 128).", lerp(A, B, 0.5)); + }}); +}}); -- 2.20.1