Add a ceiling function to complement the floor function.

1 files changed, 39 insertions, 0 deletions

diff --git a/spec/functions/ceiling_spec.rb b/spec/functions/ceiling_spec.rb
new file mode 100755
index 0000000..814aa7c
--- /dev/null
+++ b/spec/functions/ceiling_spec.rb
@@ -0,0 +1,39 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the ceiling function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    expect(Puppet::Parser::Functions.function("ceiling")).to eq("function_ceiling")
+  end
+
+  it "should raise a ParseError if there is less than 1 argument" do
+    expect { scope.function_ceiling([]) }.to( raise_error(Puppet::ParseError, /Wrong number of arguments/))
+  end
+
+  it "should should raise a ParseError if input isn't numeric (eg. String)" do
+    expect { scope.function_ceiling(["foo"]) }.to( raise_error(Puppet::ParseError, /Wrong argument type/))
+  end
+
+  it "should should raise a ParseError if input isn't numeric (eg. Boolean)" do
+    expect { scope.function_ceiling([true]) }.to( raise_error(Puppet::ParseError, /Wrong argument type/))
+  end
+
+  it "should return an integer when a numeric type is passed" do
+    result = scope.function_ceiling([12.4])
+    expect(result.is_a?(Integer)).to(eq(true))
+  end
+
+  it "should return the input when an integer is passed" do
+    result = scope.function_ceiling([7])
+    expect(result).to(eq(7))
+  end
+
+  it "should return the smallest integer greater than or equal to the input" do
+    result = scope.function_ceiling([3.8])
+    expect(result).to(eq(4))
+  end
+end
+