test_cmp expected actual
'
+test_expect_success 'with non-trailer lines mixed with Signed-off-by' '
+ cat >patch <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ Signed-off-by: a <a@example.com>
+ this is not a trailer
+ EOF
+ cat >expected <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ Signed-off-by: a <a@example.com>
+ this is not a trailer
+ token: value
+ EOF
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with non-trailer lines mixed with cherry picked from' '
+ cat >patch <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ (cherry picked from commit x)
+ this is not a trailer
+ EOF
+ cat >expected <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ (cherry picked from commit x)
+ this is not a trailer
+ token: value
+ EOF
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with non-trailer lines mixed with a configured trailer' '
+ cat >patch <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ My-trailer: x
+ this is not a trailer
+ EOF
+ cat >expected <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ My-trailer: x
+ this is not a trailer
+ token: value
+ EOF
+ test_config trailer.my.key "My-trailer: " &&
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with non-trailer lines mixed with a non-configured trailer' '
+ cat >patch <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ I-am-not-configured: x
+ this is not a trailer
+ EOF
+ cat >expected <<-\EOF &&
+
+ this is not a trailer
+ this is not a trailer
+ I-am-not-configured: x
+ this is not a trailer
+
+ token: value
+ EOF
+ test_config trailer.my.key "My-trailer: " &&
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with all non-configured trailers' '
+ cat >patch <<-\EOF &&
+
+ I-am-not-configured: x
+ I-am-also-not-configured: x
+ EOF
+ cat >expected <<-\EOF &&
+
+ I-am-not-configured: x
+ I-am-also-not-configured: x
+ token: value
+ EOF
+ test_config trailer.my.key "My-trailer: " &&
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'with non-trailer lines only' '
+ cat >patch <<-\EOF &&
+
+ this is not a trailer
+ EOF
+ cat >expected <<-\EOF &&
+
+ this is not a trailer
+
+ token: value
+ EOF
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'line with leading whitespace is not trailer' '
+ q_to_tab >patch <<-\EOF &&
+
+ Qtoken: value
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ Qtoken: value
+
+ token: value
+ EOF
+ git interpret-trailers --trailer "token: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'multiline field treated as one trailer for 25% check' '
+ q_to_tab >patch <<-\EOF &&
+
+ Signed-off-by: a <a@example.com>
+ name: value on
+ Qmultiple lines
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ Signed-off-by: a <a@example.com>
+ name: value on
+ Qmultiple lines
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ this is not a trailer
+ name: value
+ EOF
+ git interpret-trailers --trailer "name: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'multiline field treated as atomic for placement' '
+ q_to_tab >patch <<-\EOF &&
+
+ another: trailer
+ name: value on
+ Qmultiple lines
+ another: trailer
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: value on
+ Qmultiple lines
+ name: value
+ another: trailer
+ EOF
+ test_config trailer.name.where after &&
+ git interpret-trailers --trailer "name: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'multiline field treated as atomic for replacement' '
+ q_to_tab >patch <<-\EOF &&
+
+ another: trailer
+ name: value on
+ Qmultiple lines
+ another: trailer
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ another: trailer
+ name: value
+ EOF
+ test_config trailer.name.ifexists replace &&
+ git interpret-trailers --trailer "name: value" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'multiline field treated as atomic for difference check' '
+ q_to_tab >patch <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ EOF
+ test_config trailer.name.ifexists addIfDifferent &&
+
+ q_to_tab >trailer <<-\EOF &&
+ name: first line
+ Qsecond line
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ EOF
+ git interpret-trailers --trailer "$(cat trailer)" patch >actual &&
+ test_cmp expected actual &&
+
+ q_to_tab >trailer <<-\EOF &&
+ name: first line
+ QQQQQsecond line
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ name: first line
+ QQQQQsecond line
+ EOF
+ git interpret-trailers --trailer "$(cat trailer)" patch >actual &&
+ test_cmp expected actual &&
+
+ q_to_tab >trailer <<-\EOF &&
+ name: first line *DIFFERENT*
+ Qsecond line
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ name: first line *DIFFERENT*
+ Qsecond line
+ EOF
+ git interpret-trailers --trailer "$(cat trailer)" patch >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'multiline field treated as atomic for neighbor check' '
+ q_to_tab >patch <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ EOF
+ test_config trailer.name.where after &&
+ test_config trailer.name.ifexists addIfDifferentNeighbor &&
+
+ q_to_tab >trailer <<-\EOF &&
+ name: first line
+ Qsecond line
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ another: trailer
+ EOF
+ git interpret-trailers --trailer "$(cat trailer)" patch >actual &&
+ test_cmp expected actual &&
+
+ q_to_tab >trailer <<-\EOF &&
+ name: first line
+ QQQQQsecond line
+ EOF
+ q_to_tab >expected <<-\EOF &&
+
+ another: trailer
+ name: first line
+ Qsecond line
+ name: first line
+ QQQQQsecond line
+ another: trailer
+ EOF
+ git interpret-trailers --trailer "$(cat trailer)" patch >actual &&
+ test_cmp expected actual
+'
+
test_expect_success 'with config setup' '
git config trailer.ack.key "Acked-by: " &&
cat >expected <<-\EOF &&
test_cmp expected actual
'
+test_expect_success 'with cut line' '
+ cat >expected <<-\EOF &&
+ my subject
+
+ review: Brian
+ sign: A U Thor <author@example.com>
+ # ------------------------ >8 ------------------------
+ ignore this
+ EOF
+ git interpret-trailers --trailer review:Brian >actual <<-\EOF &&
+ my subject
+ # ------------------------ >8 ------------------------
+ ignore this
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'only trailers' '
+ git config trailer.sign.command "echo config-value" &&
+ cat >expected <<-\EOF &&
+ existing: existing-value
+ sign: config-value
+ added: added-value
+ EOF
+ git interpret-trailers \
+ --trailer added:added-value \
+ --only-trailers >actual <<-\EOF &&
+ my subject
+
+ my body
+
+ existing: existing-value
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'only-trailers omits non-trailer in middle of block' '
+ git config trailer.sign.command "echo config-value" &&
+ cat >expected <<-\EOF &&
+ Signed-off-by: nobody <nobody@nowhere>
+ Signed-off-by: somebody <somebody@somewhere>
+ sign: config-value
+ EOF
+ git interpret-trailers --only-trailers >actual <<-\EOF &&
+ subject
+
+ it is important that the trailers below are signed-off-by
+ so that they meet the "25% trailers Git knows about" heuristic
+
+ Signed-off-by: nobody <nobody@nowhere>
+ this is not a trailer
+ Signed-off-by: somebody <somebody@somewhere>
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'only input' '
+ git config trailer.sign.command "echo config-value" &&
+ cat >expected <<-\EOF &&
+ existing: existing-value
+ EOF
+ git interpret-trailers \
+ --only-trailers --only-input >actual <<-\EOF &&
+ my subject
+
+ my body
+
+ existing: existing-value
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'unfold' '
+ cat >expected <<-\EOF &&
+ foo: continued across several lines
+ EOF
+ # pass through tr to make leading and trailing whitespace more obvious
+ tr _ " " <<-\EOF |
+ my subject
+
+ my body
+
+ foo:_
+ __continued
+ ___across
+ ____several
+ _____lines
+ ___
+ EOF
+ git interpret-trailers --only-trailers --only-input --unfold >actual &&
+ test_cmp expected actual
+'
+
test_done