Add test cases for MFD text

tests/Makefile.am

@@ -7,6 +7,7 @@ TESTS = \
 	libx52/test_leds.sh \
 	libx52/test_brightness.sh \
 	libx52/test_indicator.sh \
+	libx52/test_mfd.sh \
 	libx52/test_clock.sh
 
 EXTRA_DIST = common_infra.sh $(TESTS)

tests/common_infra.sh

@@ -64,6 +64,13 @@ X52_CLOCK_3_INDEX='00c2'
 X52_CLOCK_DATE_INDEX='00c4'
 X52_CLOCK_YEAR_INDEX='00c8'
 
+X52_MFD_LINE_0_SET_INDEX='00d1'
+X52_MFD_LINE_1_SET_INDEX='00d2'
+X52_MFD_LINE_2_SET_INDEX='00d4'
+X52_MFD_LINE_0_CLR_INDEX='00d9'
+X52_MFD_LINE_1_CLR_INDEX='00da'
+X52_MFD_LINE_2_CLR_INDEX='00dc'
+
 find_programs()
 {
     # Tests and distcheck do not work on OSX, skip the tests

tests/libx52/test_mfd.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+source $(dirname $0)/../common_infra.sh
+
+TEST_SUITE_ID="libx52 MFD text tests"
+
+# Take in input as a string, and convert them to list of MFD set format
+format_text()
+{
+    local clear_index=`eval echo $1`
+    local set_index=`eval echo $2`
+    local input_string=$3
+    local output_list="$clear_index 0"
+    local count=0
+
+    while [[ ${#input_string} -gt 1 ]]
+    do
+        char1=${input_string:0:1}
+        char2=${input_string:1:1}
+        input_string=${input_string:2}
+        output_list="$output_list $set_index $(printf '%02x%02x' \'$char2 \'$char1)"
+        ((count+=2))
+
+        # The library ignores strings longer than 16 characters
+        if [[ $count -eq 16 ]]
+        then
+            # Discard the rest of the input string
+            input_string=
+        fi
+    done
+    
+    if [[ ${#input_string} -eq 1 ]]
+    then
+        # Add the remaining character, but pad with a space
+        output_list="$output_list $set_index $(printf '20%02x' \'$input_string)"
+    fi
+
+    echo $output_list
+    return 0
+}
+
+mfd_text_test()
+{
+    local line=$1
+    local clear_index="\$X52_MFD_LINE_${line}_CLR_INDEX"
+    local set_index="\$X52_MFD_LINE_${line}_SET_INDEX"
+    local text="$2"
+    TEST_ID="Test setting MFD line $line to '$text'"
+
+    set -x
+    pattern=$(format_text $clear_index $set_index "$text")
+    expect_pattern $pattern
+    set +x
+
+    $X52CLI mfd $line "$text"
+
+    verify_output
+}
+
+for text in \
+    a \
+    ab \
+    abc \
+    abcd \
+    abcde \
+    abcdef \
+    abcdefg \
+    abcdefgh \
+    abcdefghi \
+    abcdefghij \
+    abcdefghijk \
+    abcdefghijkl \
+    abcdefghijklm \
+    abcdefghijklmn \
+    abcdefghijklmno \
+    abcdefghijklmnop \
+    abcdefghijklmnopq \
+    abcdefghijklmnopqr \
+    ;
+do
+    for line in 0 1 2
+    do
+        mfd_text_test $line "$text"
+    done
+done
+
+verify_test_suite
+