1 files changed, 44 insertions, 0 deletions
diff --git a/Library/Homebrew/test/cmd/--env_spec.rb b/Library/Homebrew/test/cmd/--env_spec.rb
new file mode 100644
index 000000000..7dd84132a
--- /dev/null
+++ b/Library/Homebrew/test/cmd/--env_spec.rb
@@ -0,0 +1,44 @@
+describe "brew --env", :integration_test do
+  it "prints the Homebrew build environment variables" do
+    expect { brew "--env" }
+      .to output(/CMAKE_PREFIX_PATH="#{Regexp.escape(HOMEBREW_PREFIX)}[:"]/).to_stdout
+      .and not_to_output.to_stderr
+      .and be_a_success
+  end
+
+  describe "--shell=bash" do
+    it "prints the Homebrew build environment variables in Bash syntax" do
+      expect { brew "--env", "--shell=bash" }
+        .to output(/export CMAKE_PREFIX_PATH="#{Regexp.quote(HOMEBREW_PREFIX.to_s)}"/).to_stdout
+        .and not_to_output.to_stderr
+        .and be_a_success
+    end
+  end
+
+  describe "--shell=fish" do
+    it "prints the Homebrew build environment variables in Fish syntax" do
+      expect { brew "--env", "--shell=fish" }
+        .to output(/set [-]gx CMAKE_PREFIX_PATH "#{Regexp.quote(HOMEBREW_PREFIX.to_s)}"/).to_stdout
+        .and not_to_output.to_stderr
+        .and be_a_success
+    end
+  end
+
+  describe "--shell=tcsh" do
+    it "prints the Homebrew build environment variables in Tcsh syntax" do
+      expect { brew "--env", "--shell=tcsh" }
+        .to output(/setenv CMAKE_PREFIX_PATH #{Regexp.quote(HOMEBREW_PREFIX.to_s)};/).to_stdout
+        .and not_to_output.to_stderr
+        .and be_a_success
+    end
+  end
+
+  describe "--plain" do
+    it "prints the Homebrew build environment variables without quotes" do
+      expect { brew "--env", "--plain" }
+        .to output(/CMAKE_PREFIX_PATH: #{Regexp.quote(HOMEBREW_PREFIX)}/).to_stdout
+        .and not_to_output.to_stderr
+        .and be_a_success
+    end
+  end
+end