X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=test%2Ftest_porter2stemmer_parts.rb;fp=test%2Ftest_porter2stemmer_parts.rb;h=8c6b9a7ff2d8c5ee530d620bd3b66b6f6040ddff;hb=cfc1c3309c8c78411683697836307ee18f20ea1d;hp=0000000000000000000000000000000000000000;hpb=a10026f6ba04d8887df8d4c1d7f08af4198c6c2e;p=porter2stemmer.git

diff --git a/test/test_porter2stemmer_parts.rb b/test/test_porter2stemmer_parts.rb
new file mode 100644
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+++ b/test/test_porter2stemmer_parts.rb
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+# coding: utf-8
+# Porter 2 stemmer test file
+#
+# This file tests each stage of the stemmer individually.
+
+$:.unshift File.join(File.dirname(__FILE__), "..", "lib")
+
+require 'test/unit'
+require 'porter2stemmer'
+
+class TestPorter2 < Test::Unit::TestCase
+
+  def test_tidy
+    assert_equal "abacde", "abacde".porter2_tidy
+    assert_equal "abacde", "  abacde  ".porter2_tidy
+    assert_equal "abacde", "ABACDE".porter2_tidy
+    assert_equal "ab'cde", "ab‘cde".porter2_tidy
+    assert_equal "ab'cde", "ab’cde".porter2_tidy
+    assert_equal "ab'c'de", "ab’c’de".porter2_tidy
+    assert_equal "ab'c'de", "ab‘c‘de".porter2_tidy
+    assert_equal "''abacde", "’‘abacde".porter2_tidy
+  end
+  
+  def test_preprocess
+    assert_equal "abacde", "abacde".porter2_preprocess
+    assert_equal "abacde", "''abacde".porter2_preprocess
+    assert_equal "ab'c'de", "'ab'c'de".porter2_preprocess
+    assert_equal "ab'c'de", "''ab'c'de".porter2_preprocess
+    assert_equal "Yabac", "yabac".porter2_preprocess
+    assert_equal "aYbc", "aybc".porter2_preprocess
+    assert_equal "abacdeY", "abacdey".porter2_preprocess
+    assert_equal "abaYde", "abayde".porter2_preprocess
+    assert_equal "kabaYde", "kabayde".porter2_preprocess
+    assert_equal "kabyaYde", "kabyayde".porter2_preprocess
+    assert_equal "'", "'''".porter2_preprocess
+  end
+  
+  def test_R1
+    assert_equal "iful",  "beautiful".porter2_r1
+    assert_equal "y", "beauty".porter2_r1
+    assert_equal "", "beau".porter2_r1
+    assert_equal "imadversion", "animadversion".porter2_r1
+    assert_equal "kled", "sprinkled".porter2_r1
+    assert_equal "harist", "eucharist".porter2_r1
+    
+    # special cases
+    assert_equal "ate", "generate".porter2_r1
+    assert_equal "ates", "generates".porter2_r1
+    assert_equal "ated", "generated".porter2_r1
+    assert_equal "al", "general".porter2_r1
+    assert_equal "ally", "generally".porter2_r1
+    assert_equal "ic", "generic".porter2_r1
+    assert_equal "ically", "generically".porter2_r1
+    assert_equal "ous", "generous".porter2_r1
+    assert_equal "ously", "generously".porter2_r1
+
+    assert_equal "al", "communal".porter2_r1
+    assert_equal "ity", "community".porter2_r1
+    assert_equal "e", "commune".porter2_r1
+    
+    assert_equal "ic", "arsenic".porter2_r1
+    assert_equal "al", "arsenal".porter2_r1
+  end
+  
+  def test_R2
+    assert_equal "ul",  "beautiful".porter2_r2
+    assert_equal "", "beauty".porter2_r2
+    assert_equal "", "beau".porter2_r2
+    assert_equal "adversion", "animadversion".porter2_r2
+    assert_equal "", "sprinkled".porter2_r2
+    assert_equal "ist", "eucharist".porter2_r2
+  end
+  
+  def test_ends_with_short_syllable?
+    assert_equal true, "rap".porter2_ends_with_short_syllable?
+    assert_equal true, "trap".porter2_ends_with_short_syllable?
+    assert_equal true, "entrap".porter2_ends_with_short_syllable?
+    assert_equal true, "ow".porter2_ends_with_short_syllable? 
+    assert_equal true, "on".porter2_ends_with_short_syllable?
+    assert_equal true, "at".porter2_ends_with_short_syllable?
+    assert_equal false, "uproot".porter2_ends_with_short_syllable? 
+    assert_equal false, "bestow".porter2_ends_with_short_syllable?
+    assert_equal false, "disturb".porter2_ends_with_short_syllable?
+  end
+  
+  def test_is_short_word?
+    short_words = %w[ bed shed shred hop ]
+    long_words = %w[ bead embed beds ]
+    short_words.each do |w|
+      r1 = w.porter2_r1
+      assert_equal true, w.porter2_is_short_word?, 
+	  "#{w} should be short but classified as long"
+    end
+    long_words.each do |w|
+      r1 = w.porter2_r1
+      assert_equal false, w.porter2_is_short_word?, 
+	  "#{w} should be long but classified as short"
+    end
+  end
+  
+  def test_step_0
+    assert_equal "abac", "abac".porter2_step0
+    assert_equal "abac", "abac'".porter2_step0
+    assert_equal "abac", "abac's".porter2_step0
+    assert_equal "abac", "abac's'".porter2_step0
+    assert_equal "ab'c", "ab'c".porter2_step0
+    assert_equal "ab'sc", "ab'sc".porter2_step0
+    assert_equal "ab's'c", "ab's'c".porter2_step0
+    assert_equal "ab'sc", "ab'sc's".porter2_step0
+    assert_equal "'", "'".porter2_step0
+    assert_equal "'s", "'s".porter2_step0
+    assert_equal "'s", "'s'".porter2_step0
+  end
+  
+  def test_step_1a
+    assert_equal "abacde", "abacde".porter2_step1a
+    assert_equal "abacess", "abacesses".porter2_step1a
+    assert_equal "tie", "ties".porter2_step1a
+    assert_equal "tie", "tied".porter2_step1a
+    assert_equal "cri", "cries".porter2_step1a
+    assert_equal "cri", "cried".porter2_step1a
+    assert_equal "gas", "gas".porter2_step1a
+    assert_equal "this", "this".porter2_step1a
+    assert_equal "gap", "gaps".porter2_step1a
+    assert_equal "kiwi", "kiwis".porter2_step1a
+    assert_equal "abacus", "abacus".porter2_step1a
+    assert_equal "abacess", "abacess".porter2_step1a
+  end
+  
+  def test_step_1b
+    assert_equal "abacde", "abacde".porter2_step1b
+    words_non_gb = {"luxuriated" => "luxuriate", "luxuriating" => "luxuriate", 
+             "hopping" => "hop", "hopped" => "hop",
+             "hoped" => "hope", "hoping" => "hope",
+             "atomized" => "atomize", "atomised" => "atomis",
+             "addicted" => "addict", "bleed" => "bleed" }
+    words_non_gb.each do |original, stemmed|
+      assert_equal stemmed, original.porter2_step1b, 
+	  "#{original} should have stemmed to #{stemmed} but got #{original.porter2_step1b(original.porter2_r1)} instead"
+    end
+    words_gb = {"luxuriated" => "luxuriate", "luxuriating" => "luxuriate", 
+             "hopping" => "hop", "hopped" => "hop",
+             "hoped" => "hope", "hoping" => "hope",
+             "atomized" => "atomize", "atomised" => "atomise",
+             "addicted" => "addict", "bleed" => "bleed" }
+    words_gb.each do |original, stemmed|
+      assert_equal stemmed, original.porter2_step1b(true), 
+	  "#{original} should have stemmed to #{stemmed} but got #{original.porter2_step1b(original.porter2_r1)} instead"
+    end
+  end
+  
+  def test_step_1c
+    assert_equal "cri", "cry".porter2_step1c
+    assert_equal "by", "by".porter2_step1c
+    assert_equal "saY", "saY".porter2_step1c
+    assert_equal "abbeY", "abbeY".porter2_step1c
+  end
+  
+  def test_step_2
+    assert_equal "abac", "abac".porter2_step2
+    
+    assert_equal "nationalize", "nationalization".porter2_step2
+    assert_equal "nationalisate", "nationalisation".porter2_step2
+    assert_equal "nationalize", "nationalization".porter2_step2(true)
+    assert_equal "nationalise", "nationalisation".porter2_step2(true)
+    # Repeat the steps to ensure that the english-gb behaviour isn't sticky
+    assert_equal "nationalize", "nationalization".porter2_step2(false)
+    assert_equal "nationalisate", "nationalisation".porter2_step2(false)
+    assert_equal "nationalize", "nationalization".porter2_step2
+    assert_equal "nationalisate", "nationalisation".porter2_step2
+    
+    assert_equal "nationalize", "nationalizer".porter2_step2
+    assert_equal "nationaliser", "nationaliser".porter2_step2
+    assert_equal "nationalize", "nationalizer".porter2_step2(true)
+    assert_equal "nationalise", "nationaliser".porter2_step2(true)
+    
+    assert_equal "abaction", "abactional".porter2_step2
+    assert_equal "abacence", "abacenci".porter2_step2
+    assert_equal "abacance", "abacanci".porter2_step2
+    assert_equal "abacable", "abacabli".porter2_step2
+    assert_equal "abacent", "abacentli".porter2_step2
+    assert_equal "abacize", "abacizer".porter2_step2
+    assert_equal "abacize", "abacization".porter2_step2
+    assert_equal "abacate", "abacational".porter2_step2
+    assert_equal "abacate", "abacation".porter2_step2
+    assert_equal "abacate", "abacator".porter2_step2
+    assert_equal "abacal", "abacalism".porter2_step2
+    assert_equal "abacal", "abacaliti".porter2_step2
+    assert_equal "abacal", "abacalli".porter2_step2
+    assert_equal "abacful", "abacfulness".porter2_step2
+    assert_equal "abacous", "abacousli".porter2_step2
+    assert_equal "abacous", "abacousness".porter2_step2
+    assert_equal "abacive", "abaciveness".porter2_step2
+    assert_equal "abacive", "abaciviti".porter2_step2
+    assert_equal "abiliti", "abiliti".porter2_step2
+    assert_equal "abacble", "abacbiliti".porter2_step2
+    assert_equal "abacble", "abacbli".porter2_step2
+    assert_equal "abacful", "abacfulli".porter2_step2
+    assert_equal "abacless", "abaclessli".porter2_step2
+    assert_equal "abaclog", "abaclogi".porter2_step2
+    
+    assert_equal "abac", "abacli".porter2_step2
+    assert_equal "abd", "abdli".porter2_step2
+    assert_equal "abe", "abeli".porter2_step2
+    assert_equal "abg", "abgli".porter2_step2
+    assert_equal "abh", "abhli".porter2_step2
+    assert_equal "abk", "abkli".porter2_step2
+    assert_equal "abm", "abmli".porter2_step2
+    assert_equal "abn", "abnli".porter2_step2
+    assert_equal "abr", "abrli".porter2_step2
+    assert_equal "abt", "abtli".porter2_step2
+    assert_equal "abali", "abali".porter2_step2
+
+    assert_equal "bad", "badli".porter2_step2
+    assert_equal "fluentli", "fluentli".porter2_step2
+    assert_equal "geolog", "geologi".porter2_step2
+  end
+  
+  def test_step_3
+    assert_equal "abac", "abac".porter2_step3("")
+    
+    assert_equal "national", "nationalize".porter2_step3
+    assert_equal "nationalise", "nationalise".porter2_step3
+    assert_equal "national", "nationalise".porter2_step3(true)
+    # Repeat the steps to ensure that the english-gb behaviour isn't sticky
+    assert_equal "national", "nationalize".porter2_step3(false)
+    assert_equal "nationalise", "nationalise".porter2_step3(false)
+    assert_equal "national", "nationalize".porter2_step3
+    assert_equal "nationalise", "nationalise".porter2_step3
+    
+    assert_equal "abaction", "abactional".porter2_step3
+    assert_equal "abacate", "abacational".porter2_step3
+    assert_equal "abacic", "abacicate".porter2_step3
+    assert_equal "abacic", "abaciciti".porter2_step3
+    assert_equal "abacic", "abacical".porter2_step3
+    assert_equal "abac", "abacful".porter2_step3
+    assert_equal "abac", "abacness".porter2_step3
+    
+    assert_equal "abacabac", "abacabacative".porter2_step3
+    assert_equal "abacabac", "abacabacative".porter2_step3
+  
+    assert_equal "dryness", "dryness".porter2_step3
+  end
+  
+  def test_step_4
+    assert_equal "abac", "abac".porter2_step4("")
+    
+    assert_equal "nation", "nationize".porter2_step4
+    assert_equal "nationise", "nationise".porter2_step4
+    assert_equal "nation", "nationize".porter2_step4(true)
+    assert_equal "nation", "nationise".porter2_step4(true)
+    assert_equal "nation", "nationize".porter2_step4(false)
+    assert_equal "nationise", "nationise".porter2_step4(false)
+    assert_equal "nation", "nationize".porter2_step4()
+    assert_equal "nationise", "nationise".porter2_step4()
+    
+    assert_equal "abac", "abacal".porter2_step4
+    assert_equal "abac", "abacance".porter2_step4
+    assert_equal "abac", "abacence".porter2_step4
+    assert_equal "abac", "abacer".porter2_step4
+    assert_equal "abac", "abacic".porter2_step4
+    assert_equal "abacer", "abacerable".porter2_step4
+    assert_equal "abac", "abacible".porter2_step4
+    assert_equal "abac", "abacant".porter2_step4
+    assert_equal "abac", "abacement".porter2_step4	# Check we handle overlapping suffixes properly
+    assert_equal "abacac", "abacacement".porter2_step4
+    assert_equal "abacac", "abacacment".porter2_step4
+    assert_equal "abac", "abacment".porter2_step4
+    assert_equal "abac", "abacent".porter2_step4
+    assert_equal "abac", "abacism".porter2_step4
+    assert_equal "abac", "abacate".porter2_step4
+    assert_equal "abac", "abaciti".porter2_step4
+    assert_equal "abac", "abacous".porter2_step4
+    assert_equal "abac", "abacive".porter2_step4
+    assert_equal "abac", "abacize".porter2_step4
+    assert_equal "abacion", "abacion".porter2_step4
+    assert_equal "abacs", "abacsion".porter2_step4
+    assert_equal "abact", "abaction".porter2_step4
+    assert_equal "abction", "abction".porter2_step4
+    assert_equal "ablut", "ablution".porter2_step4
+    assert_equal "agreement", "agreement".porter2_step4
+    
+    assert_equal "abcal", "abcal".porter2_step4	# No removal if suffix isn't in R2
+  end
+  
+  def test_step_5
+    assert_equal "abac", "abac".porter2_step5
+    
+    assert_equal "abacl", "abacll".porter2_step5
+    assert_equal "abcll", "abcll".porter2_step5
+    
+    assert_equal "abc", "abc".porter2_step5
+    assert_equal "abl", "able".porter2_step5
+    assert_equal "abe", "abe".porter2_step5
+    assert_equal "abac", "abace".porter2_step5
+    assert_equal "bawac", "bawace".porter2_step5
+  end
+  
+  def test_porter2_postprocess
+    assert_equal "abac", "abac".porter2_postprocess
+    assert_equal "abacy", "abacy".porter2_postprocess
+    assert_equal "abacy", "abacY".porter2_postprocess
+    assert_equal "aybcy", "aYbcY".porter2_postprocess
+    assert_equal "aybcy", "aYbcy".porter2_postprocess
+  end
+
+end