1 files changed, 83 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/spec/functions/to_bytes_spec.rb b/puppet/modules/stdlib/spec/functions/to_bytes_spec.rb
new file mode 100755
index 00000000..0f6ade91
--- /dev/null
+++ b/puppet/modules/stdlib/spec/functions/to_bytes_spec.rb
@@ -0,0 +1,83 @@
+#! /usr/bin/env ruby -S rspec
+
+require 'spec_helper'
+
+describe "the to_bytes function" do
+  let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+  it "should exist" do
+    expect(Puppet::Parser::Functions.function("to_bytes")).to eq("function_to_bytes")
+  end
+
+  it "should raise a ParseError if there is less than 1 arguments" do
+    expect { scope.function_to_bytes([]) }.to( raise_error(Puppet::ParseError))
+  end
+
+  it "should convert kB to B" do
+    result = scope.function_to_bytes(["4 kB"])
+    expect(result).to(eq(4096))
+  end
+
+  it "should convert MB to B" do
+    result = scope.function_to_bytes(["4 MB"])
+    expect(result).to(eq(4194304))
+  end
+
+  it "should convert GB to B" do
+    result = scope.function_to_bytes(["4 GB"])
+    expect(result).to(eq(4294967296))
+  end
+
+  it "should convert TB to B" do
+    result = scope.function_to_bytes(["4 TB"])
+    expect(result).to(eq(4398046511104))
+  end
+
+  it "should convert PB to B" do
+    result = scope.function_to_bytes(["4 PB"])
+    expect(result).to(eq(4503599627370496))
+  end
+
+  it "should convert PB to B" do
+    result = scope.function_to_bytes(["4 EB"])
+    expect(result).to(eq(4611686018427387904))
+  end
+
+  it "should work without B in unit" do
+    result = scope.function_to_bytes(["4 k"])
+    expect(result).to(eq(4096))
+  end
+
+  it "should work without a space before unit" do
+    result = scope.function_to_bytes(["4k"])
+    expect(result).to(eq(4096))
+  end
+
+  it "should work without a unit" do
+    result = scope.function_to_bytes(["5678"])
+    expect(result).to(eq(5678))
+  end
+
+  it "should convert fractions" do
+    result = scope.function_to_bytes(["1.5 kB"])
+    expect(result).to(eq(1536))
+  end
+
+  it "should convert scientific notation" do
+    result = scope.function_to_bytes(["1.5e2 B"])
+    expect(result).to(eq(150))
+  end
+
+  it "should do nothing with a positive number" do
+    result = scope.function_to_bytes([5678])
+    expect(result).to(eq(5678))
+  end
+
+  it "should should raise a ParseError if input isn't a number" do
+    expect { scope.function_to_bytes(["foo"]) }.to( raise_error(Puppet::ParseError))
+  end
+
+  it "should should raise a ParseError if prefix is unknown" do
+    expect { scope.function_to_bytes(["5 uB"]) }.to( raise_error(Puppet::ParseError))
+  end
+end