a couple of handy parts for unit testing.

verify_correct_input reports if the input sent to it differs from an answer file.

run_test_and_verify runs a test app (providing it with a known input file), gathers the test's output, then verifies that the output is what was expected in an answer file (leverages verify_correct_input).

diff --git a/scripts/unit_test/run_test_and_verify.sh b/scripts/unit_test/run_test_and_verify.sh
new file mode 100644 (file)
index 0000000..cb03745
--- /dev/null
+++ b/scripts/unit_test/run_test_and_verify.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# a simple unit test component that takes three parameters: the test to run, the
+# input file to give that test, and the expected correct output file from the test.
+# the script will complain if there is an error in the test output.  otherwise it
+# says nothing, but the script's return value can also be checked.
+
+to_run="$1"; shift
+input_file="$1"; shift
+answer_file="$1"; shift
+
+eval "$to_run" < "$input_file" | bash "$FEISTY_MEOW_SCRIPTS/unit_test/verify_correct_input.sh" "$answer_file"
+

diff --git a/scripts/unit_test/verify_correct_input.sh b/scripts/unit_test/verify_correct_input.sh
new file mode 100644 (file)
index 0000000..28063ee
--- /dev/null
+++ b/scripts/unit_test/verify_correct_input.sh
@@ -0,0 +1,37 @@
+#/bin/bash
+
+# a simple component of unit testing which verifies that the input matches the output.
+
+# the single parameter to the script is a file that contains the correct answer.
+
+source "$FEISTY_MEOW_SCRIPTS/core/functions.sh"
+
+answer_file="$1"; shift
+
+if [ -z "$answer_file" -o ! -f "$answer_file" ]; then
+  echo This script needs a parameter which is a valid file filled with the
+  echo correct version of the input.
+  exit 1
+fi
+
+input_save_file="$(mktemp "$TMP/zz_verify_input.XXXXXX")"
+
+while read line; do
+  echo $line >>"$input_save_file"
+done
+
+diff -q "$input_save_file" "$answer_file"
+if [ $? -ne 0 ]; then
+  sep 76
+  echo "The provided input differs from the correct answer!"
+  echo -e "\nAnswer file has:\n=============="
+  cat "$answer_file"
+  echo -e "==============\nBut the input data has:\n=============="
+  cat "$input_save_file"
+  echo -e "=============="
+  sep 76
+  false  # set bad exit value.
+fi
+
+exit $?
+